Rosa's FloatVsDoubleBenchmark

Percentage Accurate: 71.4% → 99.5%

Time: 8.9s

Alternatives: 24

Speedup: 6.6×

• 45.4% of points produce a very large (infinite) output. You may want to add a precondition.

Specification

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(3 \cdot x1\right) \cdot x1\\ t_1 := x1 \cdot x1 + 1\\ t_2 := \frac{\left(t\_0 + 2 \cdot x2\right) - x1}{t\_1}\\ x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot t\_2\right) \cdot \left(t\_2 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot t\_2 - 6\right)\right) \cdot t\_1 + t\_0 \cdot t\_2\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(t\_0 - 2 \cdot x2\right) - x1}{t\_1}\right) \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* (* 3.0 x1) x1))
        (t_1 (+ (* x1 x1) 1.0))
        (t_2 (/ (- (+ t_0 (* 2.0 x2)) x1) t_1)))
   (+
    x1
    (+
     (+
      (+
       (+
        (*
         (+
          (* (* (* 2.0 x1) t_2) (- t_2 3.0))
          (* (* x1 x1) (- (* 4.0 t_2) 6.0)))
         t_1)
        (* t_0 t_2))
       (* (* x1 x1) x1))
      x1)
     (* 3.0 (/ (- (- t_0 (* 2.0 x2)) x1) t_1))))))

C

double code(double x1, double x2) {
	double t_0 = (3.0 * x1) * x1;
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	return x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    real(8) :: t_0
    real(8) :: t_1
    real(8) :: t_2
    t_0 = (3.0d0 * x1) * x1
    t_1 = (x1 * x1) + 1.0d0
    t_2 = ((t_0 + (2.0d0 * x2)) - x1) / t_1
    code = x1 + (((((((((2.0d0 * x1) * t_2) * (t_2 - 3.0d0)) + ((x1 * x1) * ((4.0d0 * t_2) - 6.0d0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0d0 * (((t_0 - (2.0d0 * x2)) - x1) / t_1)))
end function

Java

public static double code(double x1, double x2) {
	double t_0 = (3.0 * x1) * x1;
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	return x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
}

Python

def code(x1, x2):
	t_0 = (3.0 * x1) * x1
	t_1 = (x1 * x1) + 1.0
	t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1
	return x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)))

Julia

function code(x1, x2)
	t_0 = Float64(Float64(3.0 * x1) * x1)
	t_1 = Float64(Float64(x1 * x1) + 1.0)
	t_2 = Float64(Float64(Float64(t_0 + Float64(2.0 * x2)) - x1) / t_1)
	return Float64(x1 + Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(2.0 * x1) * t_2) * Float64(t_2 - 3.0)) + Float64(Float64(x1 * x1) * Float64(Float64(4.0 * t_2) - 6.0))) * t_1) + Float64(t_0 * t_2)) + Float64(Float64(x1 * x1) * x1)) + x1) + Float64(3.0 * Float64(Float64(Float64(t_0 - Float64(2.0 * x2)) - x1) / t_1))))
end

MATLAB

function tmp = code(x1, x2)
	t_0 = (3.0 * x1) * x1;
	t_1 = (x1 * x1) + 1.0;
	t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	tmp = x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(3.0 * x1), $MachinePrecision] * x1), $MachinePrecision]}, Block[{t$95$1 = N[(N[(x1 * x1), $MachinePrecision] + 1.0), $MachinePrecision]}, Block[{t$95$2 = N[(N[(N[(t$95$0 + N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]}, N[(x1 + N[(N[(N[(N[(N[(N[(N[(N[(N[(2.0 * x1), $MachinePrecision] * t$95$2), $MachinePrecision] * N[(t$95$2 - 3.0), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * N[(N[(4.0 * t$95$2), $MachinePrecision] - 6.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * t$95$1), $MachinePrecision] + N[(t$95$0 * t$95$2), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * x1), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(3.0 * N[(N[(N[(t$95$0 - N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]

Initial Program: 71.4% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(3 \cdot x1\right) \cdot x1\\ t_1 := x1 \cdot x1 + 1\\ t_2 := \frac{\left(t\_0 + 2 \cdot x2\right) - x1}{t\_1}\\ x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot t\_2\right) \cdot \left(t\_2 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot t\_2 - 6\right)\right) \cdot t\_1 + t\_0 \cdot t\_2\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(t\_0 - 2 \cdot x2\right) - x1}{t\_1}\right) \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* (* 3.0 x1) x1))
        (t_1 (+ (* x1 x1) 1.0))
        (t_2 (/ (- (+ t_0 (* 2.0 x2)) x1) t_1)))
   (+
    x1
    (+
     (+
      (+
       (+
        (*
         (+
          (* (* (* 2.0 x1) t_2) (- t_2 3.0))
          (* (* x1 x1) (- (* 4.0 t_2) 6.0)))
         t_1)
        (* t_0 t_2))
       (* (* x1 x1) x1))
      x1)
     (* 3.0 (/ (- (- t_0 (* 2.0 x2)) x1) t_1))))))

C

double code(double x1, double x2) {
	double t_0 = (3.0 * x1) * x1;
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	return x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    real(8) :: t_0
    real(8) :: t_1
    real(8) :: t_2
    t_0 = (3.0d0 * x1) * x1
    t_1 = (x1 * x1) + 1.0d0
    t_2 = ((t_0 + (2.0d0 * x2)) - x1) / t_1
    code = x1 + (((((((((2.0d0 * x1) * t_2) * (t_2 - 3.0d0)) + ((x1 * x1) * ((4.0d0 * t_2) - 6.0d0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0d0 * (((t_0 - (2.0d0 * x2)) - x1) / t_1)))
end function

Java

public static double code(double x1, double x2) {
	double t_0 = (3.0 * x1) * x1;
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	return x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
}

Python

def code(x1, x2):
	t_0 = (3.0 * x1) * x1
	t_1 = (x1 * x1) + 1.0
	t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1
	return x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)))

Julia

function code(x1, x2)
	t_0 = Float64(Float64(3.0 * x1) * x1)
	t_1 = Float64(Float64(x1 * x1) + 1.0)
	t_2 = Float64(Float64(Float64(t_0 + Float64(2.0 * x2)) - x1) / t_1)
	return Float64(x1 + Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(2.0 * x1) * t_2) * Float64(t_2 - 3.0)) + Float64(Float64(x1 * x1) * Float64(Float64(4.0 * t_2) - 6.0))) * t_1) + Float64(t_0 * t_2)) + Float64(Float64(x1 * x1) * x1)) + x1) + Float64(3.0 * Float64(Float64(Float64(t_0 - Float64(2.0 * x2)) - x1) / t_1))))
end

MATLAB

function tmp = code(x1, x2)
	t_0 = (3.0 * x1) * x1;
	t_1 = (x1 * x1) + 1.0;
	t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	tmp = x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(3.0 * x1), $MachinePrecision] * x1), $MachinePrecision]}, Block[{t$95$1 = N[(N[(x1 * x1), $MachinePrecision] + 1.0), $MachinePrecision]}, Block[{t$95$2 = N[(N[(N[(t$95$0 + N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]}, N[(x1 + N[(N[(N[(N[(N[(N[(N[(N[(N[(2.0 * x1), $MachinePrecision] * t$95$2), $MachinePrecision] * N[(t$95$2 - 3.0), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * N[(N[(4.0 * t$95$2), $MachinePrecision] - 6.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * t$95$1), $MachinePrecision] + N[(t$95$0 * t$95$2), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * x1), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(3.0 * N[(N[(N[(t$95$0 - N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]

Alternative 1: 99.5% accurate, 0.5× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(x1 \cdot x1\right) \cdot x1\\ t_1 := x1 \cdot x1 + 1\\ t_2 := 1 + x1 \cdot x1\\ t_3 := \left(3 \cdot x1\right) \cdot x1\\ t_4 := \frac{\left(t\_3 + 2 \cdot x2\right) - x1}{t\_1}\\ t_5 := t\_3 \cdot t\_4\\ t_6 := \left(\left(2 \cdot x1\right) \cdot t\_4\right) \cdot \left(t\_4 - 3\right)\\ t_7 := 3 \cdot \frac{\left(t\_3 - 2 \cdot x2\right) - x1}{t\_1}\\ \mathbf{if}\;x1 + \left(\left(\left(\left(\left(t\_6 + \left(x1 \cdot x1\right) \cdot \left(4 \cdot t\_4 - 6\right)\right) \cdot t\_1 + t\_5\right) + t\_0\right) + x1\right) + t\_7\right) \leq \infty:\\ \;\;\;\;x1 + \left(\left(\left(\left(\left(t\_6 + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \frac{4 \cdot \left(3 \cdot \frac{x1 \cdot x1}{t\_2} - \frac{x1}{t\_2}\right) - 6}{x2}, -8 \cdot \frac{1}{t\_2}\right)\right)\right)\right) \cdot t\_1 + t\_5\right) + t\_0\right) + x1\right) + t\_7\right)\\ \mathbf{else}:\\ \;\;\;\;x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right)\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* (* x1 x1) x1))
        (t_1 (+ (* x1 x1) 1.0))
        (t_2 (+ 1.0 (* x1 x1)))
        (t_3 (* (* 3.0 x1) x1))
        (t_4 (/ (- (+ t_3 (* 2.0 x2)) x1) t_1))
        (t_5 (* t_3 t_4))
        (t_6 (* (* (* 2.0 x1) t_4) (- t_4 3.0)))
        (t_7 (* 3.0 (/ (- (- t_3 (* 2.0 x2)) x1) t_1))))
   (if (<=
        (+
         x1
         (+
          (+
           (+ (+ (* (+ t_6 (* (* x1 x1) (- (* 4.0 t_4) 6.0))) t_1) t_5) t_0)
           x1)
          t_7))
        INFINITY)
     (+
      x1
      (+
       (+
        (+
         (+
          (*
           (+
            t_6
            (*
             (* x1 x1)
             (*
              -1.0
              (*
               x2
               (fma
                -1.0
                (/ (- (* 4.0 (- (* 3.0 (/ (* x1 x1) t_2)) (/ x1 t_2))) 6.0) x2)
                (* -8.0 (/ 1.0 t_2)))))))
           t_1)
          t_5)
         t_0)
        x1)
       t_7))
     (+
      x1
      (*
       (* (* x1 x1) (* x1 x1))
       (-
        6.0
        (* 1.0 (/ (- 3.0 (/ (+ 9.0 (* 4.0 (- (* 2.0 x2) 3.0))) x1)) x1))))))))

C

double code(double x1, double x2) {
	double t_0 = (x1 * x1) * x1;
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = 1.0 + (x1 * x1);
	double t_3 = (3.0 * x1) * x1;
	double t_4 = ((t_3 + (2.0 * x2)) - x1) / t_1;
	double t_5 = t_3 * t_4;
	double t_6 = ((2.0 * x1) * t_4) * (t_4 - 3.0);
	double t_7 = 3.0 * (((t_3 - (2.0 * x2)) - x1) / t_1);
	double tmp;
	if ((x1 + ((((((t_6 + ((x1 * x1) * ((4.0 * t_4) - 6.0))) * t_1) + t_5) + t_0) + x1) + t_7)) <= ((double) INFINITY)) {
		tmp = x1 + ((((((t_6 + ((x1 * x1) * (-1.0 * (x2 * fma(-1.0, (((4.0 * ((3.0 * ((x1 * x1) / t_2)) - (x1 / t_2))) - 6.0) / x2), (-8.0 * (1.0 / t_2))))))) * t_1) + t_5) + t_0) + x1) + t_7);
	} else {
		tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))));
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(Float64(x1 * x1) * x1)
	t_1 = Float64(Float64(x1 * x1) + 1.0)
	t_2 = Float64(1.0 + Float64(x1 * x1))
	t_3 = Float64(Float64(3.0 * x1) * x1)
	t_4 = Float64(Float64(Float64(t_3 + Float64(2.0 * x2)) - x1) / t_1)
	t_5 = Float64(t_3 * t_4)
	t_6 = Float64(Float64(Float64(2.0 * x1) * t_4) * Float64(t_4 - 3.0))
	t_7 = Float64(3.0 * Float64(Float64(Float64(t_3 - Float64(2.0 * x2)) - x1) / t_1))
	tmp = 0.0
	if (Float64(x1 + Float64(Float64(Float64(Float64(Float64(Float64(t_6 + Float64(Float64(x1 * x1) * Float64(Float64(4.0 * t_4) - 6.0))) * t_1) + t_5) + t_0) + x1) + t_7)) <= Inf)
		tmp = Float64(x1 + Float64(Float64(Float64(Float64(Float64(Float64(t_6 + Float64(Float64(x1 * x1) * Float64(-1.0 * Float64(x2 * fma(-1.0, Float64(Float64(Float64(4.0 * Float64(Float64(3.0 * Float64(Float64(x1 * x1) / t_2)) - Float64(x1 / t_2))) - 6.0) / x2), Float64(-8.0 * Float64(1.0 / t_2))))))) * t_1) + t_5) + t_0) + x1) + t_7));
	else
		tmp = Float64(x1 + Float64(Float64(Float64(x1 * x1) * Float64(x1 * x1)) * Float64(6.0 - Float64(1.0 * Float64(Float64(3.0 - Float64(Float64(9.0 + Float64(4.0 * Float64(Float64(2.0 * x2) - 3.0))) / x1)) / x1)))));
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(x1 * x1), $MachinePrecision] * x1), $MachinePrecision]}, Block[{t$95$1 = N[(N[(x1 * x1), $MachinePrecision] + 1.0), $MachinePrecision]}, Block[{t$95$2 = N[(1.0 + N[(x1 * x1), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$3 = N[(N[(3.0 * x1), $MachinePrecision] * x1), $MachinePrecision]}, Block[{t$95$4 = N[(N[(N[(t$95$3 + N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]}, Block[{t$95$5 = N[(t$95$3 * t$95$4), $MachinePrecision]}, Block[{t$95$6 = N[(N[(N[(2.0 * x1), $MachinePrecision] * t$95$4), $MachinePrecision] * N[(t$95$4 - 3.0), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$7 = N[(3.0 * N[(N[(N[(t$95$3 - N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(x1 + N[(N[(N[(N[(N[(N[(t$95$6 + N[(N[(x1 * x1), $MachinePrecision] * N[(N[(4.0 * t$95$4), $MachinePrecision] - 6.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * t$95$1), $MachinePrecision] + t$95$5), $MachinePrecision] + t$95$0), $MachinePrecision] + x1), $MachinePrecision] + t$95$7), $MachinePrecision]), $MachinePrecision], Infinity], N[(x1 + N[(N[(N[(N[(N[(N[(t$95$6 + N[(N[(x1 * x1), $MachinePrecision] * N[(-1.0 * N[(x2 * N[(-1.0 * N[(N[(N[(4.0 * N[(N[(3.0 * N[(N[(x1 * x1), $MachinePrecision] / t$95$2), $MachinePrecision]), $MachinePrecision] - N[(x1 / t$95$2), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 6.0), $MachinePrecision] / x2), $MachinePrecision] + N[(-8.0 * N[(1.0 / t$95$2), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * t$95$1), $MachinePrecision] + t$95$5), $MachinePrecision] + t$95$0), $MachinePrecision] + x1), $MachinePrecision] + t$95$7), $MachinePrecision]), $MachinePrecision], N[(x1 + N[(N[(N[(x1 * x1), $MachinePrecision] * N[(x1 * x1), $MachinePrecision]), $MachinePrecision] * N[(6.0 - N[(1.0 * N[(N[(3.0 - N[(N[(9.0 + N[(4.0 * N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]]]]]]]

Derivation

1. Split input into 2 regimes

2. if (+.f64 x1 (+.f64 (+.f64 (+.f64 (+.f64 (*.f64 (+.f64 (*.f64 (*.f64 (*.f64 #s(literal 2 binary64) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) (-.f64 (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) #s(literal 3 binary64))) (*.f64 (*.f64 x1 x1) (-.f64 (*.f64 #s(literal 4 binary64) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) #s(literal 6 binary64)))) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) (*.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))))) (*.f64 (*.f64 x1 x1) x1)) x1) (*.f64 #s(literal 3 binary64) (/.f64 (-.f64 (-.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))))) < +inf.0

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around -inf

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot \left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)\right)\right)}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \color{blue}{\left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)\right)}\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \color{blue}{\left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)}\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      3. fp-cancel-sub-sign-inv N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} + \color{blue}{\left(\mathsf{neg}\left(8\right)\right) \cdot \frac{1}{1 + {x1}^{2}}}\right)\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      4. lower-fma.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \color{blue}{\frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2}}, \left(\mathsf{neg}\left(8\right)\right) \cdot \frac{1}{1 + {x1}^{2}}\right)\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   4. Applied rewrites 71.4%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \frac{4 \cdot \left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \frac{x1}{1 + x1 \cdot x1}\right) - 6}{x2}, -8 \cdot \frac{1}{1 + x1 \cdot x1}\right)\right)\right)}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   if +inf.0 < (+.f64 x1 (+.f64 (+.f64 (+.f64 (+.f64 (*.f64 (+.f64 (*.f64 (*.f64 (*.f64 #s(literal 2 binary64) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) (-.f64 (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) #s(literal 3 binary64))) (*.f64 (*.f64 x1 x1) (-.f64 (*.f64 #s(literal 4 binary64) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) #s(literal 6 binary64)))) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) (*.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))))) (*.f64 (*.f64 x1 x1) x1)) x1) (*.f64 #s(literal 3 binary64) (/.f64 (-.f64 (-.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))))))

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around -inf

      \[\leadsto x1 + \color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{2 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   4. Applied rewrites 48.0%

      \[\leadsto x1 + \color{blue}{\left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - 1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{2 - 2 \cdot \left(1 - -3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]
   6. Step-by-step derivation

      1. lower-/.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      2. lower-+.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      3. lift--.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      4. lift-*.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      5. lift-*.f64 47.1

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

   7. Applied rewrites 47.1%

      \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 2: 99.5% accurate, 0.5× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(3 \cdot x1\right) \cdot x1\\ t_1 := x1 \cdot x1 + 1\\ t_2 := \frac{\left(t\_0 + 2 \cdot x2\right) - x1}{t\_1}\\ t_3 := x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot t\_2\right) \cdot \left(t\_2 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot t\_2 - 6\right)\right) \cdot t\_1 + t\_0 \cdot t\_2\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(t\_0 - 2 \cdot x2\right) - x1}{t\_1}\right)\\ \mathbf{if}\;t\_3 \leq \infty:\\ \;\;\;\;t\_3\\ \mathbf{else}:\\ \;\;\;\;x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right)\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* (* 3.0 x1) x1))
        (t_1 (+ (* x1 x1) 1.0))
        (t_2 (/ (- (+ t_0 (* 2.0 x2)) x1) t_1))
        (t_3
         (+
          x1
          (+
           (+
            (+
             (+
              (*
               (+
                (* (* (* 2.0 x1) t_2) (- t_2 3.0))
                (* (* x1 x1) (- (* 4.0 t_2) 6.0)))
               t_1)
              (* t_0 t_2))
             (* (* x1 x1) x1))
            x1)
           (* 3.0 (/ (- (- t_0 (* 2.0 x2)) x1) t_1))))))
   (if (<= t_3 INFINITY)
     t_3
     (+
      x1
      (*
       (* (* x1 x1) (* x1 x1))
       (-
        6.0
        (* 1.0 (/ (- 3.0 (/ (+ 9.0 (* 4.0 (- (* 2.0 x2) 3.0))) x1)) x1))))))))

C

double code(double x1, double x2) {
	double t_0 = (3.0 * x1) * x1;
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	double t_3 = x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
	double tmp;
	if (t_3 <= ((double) INFINITY)) {
		tmp = t_3;
	} else {
		tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))));
	}
	return tmp;
}

Java

public static double code(double x1, double x2) {
	double t_0 = (3.0 * x1) * x1;
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	double t_3 = x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
	double tmp;
	if (t_3 <= Double.POSITIVE_INFINITY) {
		tmp = t_3;
	} else {
		tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))));
	}
	return tmp;
}

Python

def code(x1, x2):
	t_0 = (3.0 * x1) * x1
	t_1 = (x1 * x1) + 1.0
	t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1
	t_3 = x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)))
	tmp = 0
	if t_3 <= math.inf:
		tmp = t_3
	else:
		tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))))
	return tmp

Julia

function code(x1, x2)
	t_0 = Float64(Float64(3.0 * x1) * x1)
	t_1 = Float64(Float64(x1 * x1) + 1.0)
	t_2 = Float64(Float64(Float64(t_0 + Float64(2.0 * x2)) - x1) / t_1)
	t_3 = Float64(x1 + Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(2.0 * x1) * t_2) * Float64(t_2 - 3.0)) + Float64(Float64(x1 * x1) * Float64(Float64(4.0 * t_2) - 6.0))) * t_1) + Float64(t_0 * t_2)) + Float64(Float64(x1 * x1) * x1)) + x1) + Float64(3.0 * Float64(Float64(Float64(t_0 - Float64(2.0 * x2)) - x1) / t_1))))
	tmp = 0.0
	if (t_3 <= Inf)
		tmp = t_3;
	else
		tmp = Float64(x1 + Float64(Float64(Float64(x1 * x1) * Float64(x1 * x1)) * Float64(6.0 - Float64(1.0 * Float64(Float64(3.0 - Float64(Float64(9.0 + Float64(4.0 * Float64(Float64(2.0 * x2) - 3.0))) / x1)) / x1)))));
	end
	return tmp
end

MATLAB

function tmp_2 = code(x1, x2)
	t_0 = (3.0 * x1) * x1;
	t_1 = (x1 * x1) + 1.0;
	t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	t_3 = x1 + (((((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
	tmp = 0.0;
	if (t_3 <= Inf)
		tmp = t_3;
	else
		tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))));
	end
	tmp_2 = tmp;
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(3.0 * x1), $MachinePrecision] * x1), $MachinePrecision]}, Block[{t$95$1 = N[(N[(x1 * x1), $MachinePrecision] + 1.0), $MachinePrecision]}, Block[{t$95$2 = N[(N[(N[(t$95$0 + N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]}, Block[{t$95$3 = N[(x1 + N[(N[(N[(N[(N[(N[(N[(N[(N[(2.0 * x1), $MachinePrecision] * t$95$2), $MachinePrecision] * N[(t$95$2 - 3.0), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * N[(N[(4.0 * t$95$2), $MachinePrecision] - 6.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * t$95$1), $MachinePrecision] + N[(t$95$0 * t$95$2), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * x1), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(3.0 * N[(N[(N[(t$95$0 - N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$3, Infinity], t$95$3, N[(x1 + N[(N[(N[(x1 * x1), $MachinePrecision] * N[(x1 * x1), $MachinePrecision]), $MachinePrecision] * N[(6.0 - N[(1.0 * N[(N[(3.0 - N[(N[(9.0 + N[(4.0 * N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]]]

Derivation

1. Split input into 2 regimes

2. if (+.f64 x1 (+.f64 (+.f64 (+.f64 (+.f64 (*.f64 (+.f64 (*.f64 (*.f64 (*.f64 #s(literal 2 binary64) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) (-.f64 (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) #s(literal 3 binary64))) (*.f64 (*.f64 x1 x1) (-.f64 (*.f64 #s(literal 4 binary64) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) #s(literal 6 binary64)))) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) (*.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))))) (*.f64 (*.f64 x1 x1) x1)) x1) (*.f64 #s(literal 3 binary64) (/.f64 (-.f64 (-.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))))) < +inf.0

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   if +inf.0 < (+.f64 x1 (+.f64 (+.f64 (+.f64 (+.f64 (*.f64 (+.f64 (*.f64 (*.f64 (*.f64 #s(literal 2 binary64) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) (-.f64 (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) #s(literal 3 binary64))) (*.f64 (*.f64 x1 x1) (-.f64 (*.f64 #s(literal 4 binary64) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) #s(literal 6 binary64)))) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) (*.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))))) (*.f64 (*.f64 x1 x1) x1)) x1) (*.f64 #s(literal 3 binary64) (/.f64 (-.f64 (-.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))))))

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around -inf

      \[\leadsto x1 + \color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{2 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   4. Applied rewrites 48.0%

      \[\leadsto x1 + \color{blue}{\left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - 1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{2 - 2 \cdot \left(1 - -3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]
   6. Step-by-step derivation

      1. lower-/.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      2. lower-+.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      3. lift--.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      4. lift-*.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      5. lift-*.f64 47.1

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

   7. Applied rewrites 47.1%

      \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 3: 98.7% accurate, 0.5× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(3 \cdot x1\right) \cdot x1\\ t_1 := x1 \cdot x1 + 1\\ t_2 := \frac{\left(t\_0 + 2 \cdot x2\right) - x1}{t\_1}\\ t_3 := \left(\left(\left(\left(\left(2 \cdot x1\right) \cdot t\_2\right) \cdot \left(t\_2 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot t\_2 - 6\right)\right) \cdot t\_1 + t\_0 \cdot t\_2\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\\ \mathbf{if}\;x1 + \left(t\_3 + 3 \cdot \frac{\left(t\_0 - 2 \cdot x2\right) - x1}{t\_1}\right) \leq \infty:\\ \;\;\;\;x1 + \left(t\_3 + \mathsf{fma}\left(-6, x2, -3 \cdot x1\right)\right)\\ \mathbf{else}:\\ \;\;\;\;x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right)\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* (* 3.0 x1) x1))
        (t_1 (+ (* x1 x1) 1.0))
        (t_2 (/ (- (+ t_0 (* 2.0 x2)) x1) t_1))
        (t_3
         (+
          (+
           (+
            (*
             (+
              (* (* (* 2.0 x1) t_2) (- t_2 3.0))
              (* (* x1 x1) (- (* 4.0 t_2) 6.0)))
             t_1)
            (* t_0 t_2))
           (* (* x1 x1) x1))
          x1)))
   (if (<= (+ x1 (+ t_3 (* 3.0 (/ (- (- t_0 (* 2.0 x2)) x1) t_1)))) INFINITY)
     (+ x1 (+ t_3 (fma -6.0 x2 (* -3.0 x1))))
     (+
      x1
      (*
       (* (* x1 x1) (* x1 x1))
       (-
        6.0
        (* 1.0 (/ (- 3.0 (/ (+ 9.0 (* 4.0 (- (* 2.0 x2) 3.0))) x1)) x1))))))))

C

double code(double x1, double x2) {
	double t_0 = (3.0 * x1) * x1;
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	double t_3 = (((((((2.0 * x1) * t_2) * (t_2 - 3.0)) + ((x1 * x1) * ((4.0 * t_2) - 6.0))) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1;
	double tmp;
	if ((x1 + (t_3 + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)))) <= ((double) INFINITY)) {
		tmp = x1 + (t_3 + fma(-6.0, x2, (-3.0 * x1)));
	} else {
		tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))));
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(Float64(3.0 * x1) * x1)
	t_1 = Float64(Float64(x1 * x1) + 1.0)
	t_2 = Float64(Float64(Float64(t_0 + Float64(2.0 * x2)) - x1) / t_1)
	t_3 = Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(2.0 * x1) * t_2) * Float64(t_2 - 3.0)) + Float64(Float64(x1 * x1) * Float64(Float64(4.0 * t_2) - 6.0))) * t_1) + Float64(t_0 * t_2)) + Float64(Float64(x1 * x1) * x1)) + x1)
	tmp = 0.0
	if (Float64(x1 + Float64(t_3 + Float64(3.0 * Float64(Float64(Float64(t_0 - Float64(2.0 * x2)) - x1) / t_1)))) <= Inf)
		tmp = Float64(x1 + Float64(t_3 + fma(-6.0, x2, Float64(-3.0 * x1))));
	else
		tmp = Float64(x1 + Float64(Float64(Float64(x1 * x1) * Float64(x1 * x1)) * Float64(6.0 - Float64(1.0 * Float64(Float64(3.0 - Float64(Float64(9.0 + Float64(4.0 * Float64(Float64(2.0 * x2) - 3.0))) / x1)) / x1)))));
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(3.0 * x1), $MachinePrecision] * x1), $MachinePrecision]}, Block[{t$95$1 = N[(N[(x1 * x1), $MachinePrecision] + 1.0), $MachinePrecision]}, Block[{t$95$2 = N[(N[(N[(t$95$0 + N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]}, Block[{t$95$3 = N[(N[(N[(N[(N[(N[(N[(N[(2.0 * x1), $MachinePrecision] * t$95$2), $MachinePrecision] * N[(t$95$2 - 3.0), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * N[(N[(4.0 * t$95$2), $MachinePrecision] - 6.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * t$95$1), $MachinePrecision] + N[(t$95$0 * t$95$2), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * x1), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision]}, If[LessEqual[N[(x1 + N[(t$95$3 + N[(3.0 * N[(N[(N[(t$95$0 - N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], Infinity], N[(x1 + N[(t$95$3 + N[(-6.0 * x2 + N[(-3.0 * x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x1 + N[(N[(N[(x1 * x1), $MachinePrecision] * N[(x1 * x1), $MachinePrecision]), $MachinePrecision] * N[(6.0 - N[(1.0 * N[(N[(3.0 - N[(N[(9.0 + N[(4.0 * N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]]]

Derivation

1. Split input into 2 regimes

2. if (+.f64 x1 (+.f64 (+.f64 (+.f64 (+.f64 (*.f64 (+.f64 (*.f64 (*.f64 (*.f64 #s(literal 2 binary64) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) (-.f64 (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) #s(literal 3 binary64))) (*.f64 (*.f64 x1 x1) (-.f64 (*.f64 #s(literal 4 binary64) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) #s(literal 6 binary64)))) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) (*.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))))) (*.f64 (*.f64 x1 x1) x1)) x1) (*.f64 #s(literal 3 binary64) (/.f64 (-.f64 (-.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))))) < +inf.0

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around 0

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + \color{blue}{\left(-6 \cdot x2 + -3 \cdot x1\right)}\right) \]
   3. Step-by-step derivation

      1. lower-fma.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + \mathsf{fma}\left(-6, \color{blue}{x2}, -3 \cdot x1\right)\right) \]

      2. lower-*.f64 70.6

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + \mathsf{fma}\left(-6, x2, -3 \cdot x1\right)\right) \]

   4. Applied rewrites 70.6%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + \color{blue}{\mathsf{fma}\left(-6, x2, -3 \cdot x1\right)}\right) \]

   if +inf.0 < (+.f64 x1 (+.f64 (+.f64 (+.f64 (+.f64 (*.f64 (+.f64 (*.f64 (*.f64 (*.f64 #s(literal 2 binary64) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) (-.f64 (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) #s(literal 3 binary64))) (*.f64 (*.f64 x1 x1) (-.f64 (*.f64 #s(literal 4 binary64) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64)))) #s(literal 6 binary64)))) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))) (*.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (/.f64 (-.f64 (+.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))))) (*.f64 (*.f64 x1 x1) x1)) x1) (*.f64 #s(literal 3 binary64) (/.f64 (-.f64 (-.f64 (*.f64 (*.f64 #s(literal 3 binary64) x1) x1) (*.f64 #s(literal 2 binary64) x2)) x1) (+.f64 (*.f64 x1 x1) #s(literal 1 binary64))))))

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around -inf

      \[\leadsto x1 + \color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{2 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   4. Applied rewrites 48.0%

      \[\leadsto x1 + \color{blue}{\left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - 1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{2 - 2 \cdot \left(1 - -3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]
   6. Step-by-step derivation

      1. lower-/.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      2. lower-+.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      3. lift--.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      4. lift-*.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      5. lift-*.f64 47.1

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

   7. Applied rewrites 47.1%

      \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 4: 97.4% accurate, 1.2× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(3 \cdot x1\right) \cdot x1\\ t_1 := x1 \cdot x1 + 1\\ t_2 := \frac{\left(t\_0 + 2 \cdot x2\right) - x1}{t\_1}\\ \mathbf{if}\;x1 \leq -1.35 \cdot 10^{+51}:\\ \;\;\;\;{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{8 \cdot x2 - 3}{x1}}{x1}\right)\\ \mathbf{elif}\;x1 \leq 1.9 \cdot 10^{+65}:\\ \;\;\;\;x1 + \left(\left(\left(\left(\left(\left(4 \cdot \frac{x1 \cdot x2}{1 + x1 \cdot x1}\right) \cdot \left(t\_2 - 3\right) + \left(x1 \cdot x1\right) \cdot 6\right) \cdot t\_1 + t\_0 \cdot t\_2\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(t\_0 - 2 \cdot x2\right) - x1}{t\_1}\right)\\ \mathbf{else}:\\ \;\;\;\;x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right)\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* (* 3.0 x1) x1))
        (t_1 (+ (* x1 x1) 1.0))
        (t_2 (/ (- (+ t_0 (* 2.0 x2)) x1) t_1)))
   (if (<= x1 -1.35e+51)
     (*
      (pow x1 4.0)
      (+ 6.0 (* -1.0 (/ (+ 3.0 (* -1.0 (/ (- (* 8.0 x2) 3.0) x1))) x1))))
     (if (<= x1 1.9e+65)
       (+
        x1
        (+
         (+
          (+
           (+
            (*
             (+
              (* (* 4.0 (/ (* x1 x2) (+ 1.0 (* x1 x1)))) (- t_2 3.0))
              (* (* x1 x1) 6.0))
             t_1)
            (* t_0 t_2))
           (* (* x1 x1) x1))
          x1)
         (* 3.0 (/ (- (- t_0 (* 2.0 x2)) x1) t_1))))
       (+
        x1
        (*
         (* (* x1 x1) (* x1 x1))
         (-
          6.0
          (*
           1.0
           (/ (- 3.0 (/ (+ 9.0 (* 4.0 (- (* 2.0 x2) 3.0))) x1)) x1)))))))))

C

double code(double x1, double x2) {
	double t_0 = (3.0 * x1) * x1;
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	double tmp;
	if (x1 <= -1.35e+51) {
		tmp = pow(x1, 4.0) * (6.0 + (-1.0 * ((3.0 + (-1.0 * (((8.0 * x2) - 3.0) / x1))) / x1)));
	} else if (x1 <= 1.9e+65) {
		tmp = x1 + ((((((((4.0 * ((x1 * x2) / (1.0 + (x1 * x1)))) * (t_2 - 3.0)) + ((x1 * x1) * 6.0)) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
	} else {
		tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))));
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    real(8) :: t_0
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_0 = (3.0d0 * x1) * x1
    t_1 = (x1 * x1) + 1.0d0
    t_2 = ((t_0 + (2.0d0 * x2)) - x1) / t_1
    if (x1 <= (-1.35d+51)) then
        tmp = (x1 ** 4.0d0) * (6.0d0 + ((-1.0d0) * ((3.0d0 + ((-1.0d0) * (((8.0d0 * x2) - 3.0d0) / x1))) / x1)))
    else if (x1 <= 1.9d+65) then
        tmp = x1 + ((((((((4.0d0 * ((x1 * x2) / (1.0d0 + (x1 * x1)))) * (t_2 - 3.0d0)) + ((x1 * x1) * 6.0d0)) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0d0 * (((t_0 - (2.0d0 * x2)) - x1) / t_1)))
    else
        tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0d0 - (1.0d0 * ((3.0d0 - ((9.0d0 + (4.0d0 * ((2.0d0 * x2) - 3.0d0))) / x1)) / x1))))
    end if
    code = tmp
end function

Java

public static double code(double x1, double x2) {
	double t_0 = (3.0 * x1) * x1;
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	double tmp;
	if (x1 <= -1.35e+51) {
		tmp = Math.pow(x1, 4.0) * (6.0 + (-1.0 * ((3.0 + (-1.0 * (((8.0 * x2) - 3.0) / x1))) / x1)));
	} else if (x1 <= 1.9e+65) {
		tmp = x1 + ((((((((4.0 * ((x1 * x2) / (1.0 + (x1 * x1)))) * (t_2 - 3.0)) + ((x1 * x1) * 6.0)) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
	} else {
		tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))));
	}
	return tmp;
}

Python

def code(x1, x2):
	t_0 = (3.0 * x1) * x1
	t_1 = (x1 * x1) + 1.0
	t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1
	tmp = 0
	if x1 <= -1.35e+51:
		tmp = math.pow(x1, 4.0) * (6.0 + (-1.0 * ((3.0 + (-1.0 * (((8.0 * x2) - 3.0) / x1))) / x1)))
	elif x1 <= 1.9e+65:
		tmp = x1 + ((((((((4.0 * ((x1 * x2) / (1.0 + (x1 * x1)))) * (t_2 - 3.0)) + ((x1 * x1) * 6.0)) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)))
	else:
		tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))))
	return tmp

Julia

function code(x1, x2)
	t_0 = Float64(Float64(3.0 * x1) * x1)
	t_1 = Float64(Float64(x1 * x1) + 1.0)
	t_2 = Float64(Float64(Float64(t_0 + Float64(2.0 * x2)) - x1) / t_1)
	tmp = 0.0
	if (x1 <= -1.35e+51)
		tmp = Float64((x1 ^ 4.0) * Float64(6.0 + Float64(-1.0 * Float64(Float64(3.0 + Float64(-1.0 * Float64(Float64(Float64(8.0 * x2) - 3.0) / x1))) / x1))));
	elseif (x1 <= 1.9e+65)
		tmp = Float64(x1 + Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(4.0 * Float64(Float64(x1 * x2) / Float64(1.0 + Float64(x1 * x1)))) * Float64(t_2 - 3.0)) + Float64(Float64(x1 * x1) * 6.0)) * t_1) + Float64(t_0 * t_2)) + Float64(Float64(x1 * x1) * x1)) + x1) + Float64(3.0 * Float64(Float64(Float64(t_0 - Float64(2.0 * x2)) - x1) / t_1))));
	else
		tmp = Float64(x1 + Float64(Float64(Float64(x1 * x1) * Float64(x1 * x1)) * Float64(6.0 - Float64(1.0 * Float64(Float64(3.0 - Float64(Float64(9.0 + Float64(4.0 * Float64(Float64(2.0 * x2) - 3.0))) / x1)) / x1)))));
	end
	return tmp
end

MATLAB

function tmp_2 = code(x1, x2)
	t_0 = (3.0 * x1) * x1;
	t_1 = (x1 * x1) + 1.0;
	t_2 = ((t_0 + (2.0 * x2)) - x1) / t_1;
	tmp = 0.0;
	if (x1 <= -1.35e+51)
		tmp = (x1 ^ 4.0) * (6.0 + (-1.0 * ((3.0 + (-1.0 * (((8.0 * x2) - 3.0) / x1))) / x1)));
	elseif (x1 <= 1.9e+65)
		tmp = x1 + ((((((((4.0 * ((x1 * x2) / (1.0 + (x1 * x1)))) * (t_2 - 3.0)) + ((x1 * x1) * 6.0)) * t_1) + (t_0 * t_2)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_0 - (2.0 * x2)) - x1) / t_1)));
	else
		tmp = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))));
	end
	tmp_2 = tmp;
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(3.0 * x1), $MachinePrecision] * x1), $MachinePrecision]}, Block[{t$95$1 = N[(N[(x1 * x1), $MachinePrecision] + 1.0), $MachinePrecision]}, Block[{t$95$2 = N[(N[(N[(t$95$0 + N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]}, If[LessEqual[x1, -1.35e+51], N[(N[Power[x1, 4.0], $MachinePrecision] * N[(6.0 + N[(-1.0 * N[(N[(3.0 + N[(-1.0 * N[(N[(N[(8.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x1, 1.9e+65], N[(x1 + N[(N[(N[(N[(N[(N[(N[(N[(4.0 * N[(N[(x1 * x2), $MachinePrecision] / N[(1.0 + N[(x1 * x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(t$95$2 - 3.0), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * 6.0), $MachinePrecision]), $MachinePrecision] * t$95$1), $MachinePrecision] + N[(t$95$0 * t$95$2), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * x1), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(3.0 * N[(N[(N[(t$95$0 - N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x1 + N[(N[(N[(x1 * x1), $MachinePrecision] * N[(x1 * x1), $MachinePrecision]), $MachinePrecision] * N[(6.0 - N[(1.0 * N[(N[(3.0 - N[(N[(9.0 + N[(4.0 * N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]]]

Derivation

1. Split input into 3 regimes

2. if x1 < -1.34999999999999996e51

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(x2 \cdot \left(\left(6 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} + \left(8 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}} + \left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(2 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) + 2 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}}\right)}{1 + {x1}^{2}} + 8 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}}\right)\right)\right) - 6 \cdot \frac{1}{1 + {x1}^{2}}\right) + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)\right)} \]

   4. Applied rewrites 70.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(x2, \mathsf{fma}\left(6, \frac{x1 \cdot x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(8, \frac{x1 \cdot x2}{1 + x1 \cdot x1}, \left(1 + x1 \cdot x1\right) \cdot \mathsf{fma}\left(2, \frac{x1 \cdot \left(2 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) + \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}\right)\right)}{1 + x1 \cdot x1}, 8 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1}\right)\right)\right) - 6 \cdot \frac{1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around -inf

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{8 \cdot x2 - 3}{x1}}{x1}\right)} \]
   6. Step-by-step derivation

   7. Applied rewrites 47.3%

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{8 \cdot x2 - 3}{x1}}{x1}\right)} \]

   if -1.34999999999999996e51 < x1 < 1.90000000000000006e65

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around inf

      \[\leadsto x1 + \left(\left(\left(\left(\left(\color{blue}{\left(4 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}}\right)} \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(4 \cdot \color{blue}{\frac{x1 \cdot x2}{1 + {x1}^{2}}}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-/.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(4 \cdot \frac{x1 \cdot x2}{\color{blue}{1 + {x1}^{2}}}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      3. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(4 \cdot \frac{x1 \cdot x2}{\color{blue}{1} + {x1}^{2}}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      4. lower-+.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(4 \cdot \frac{x1 \cdot x2}{1 + \color{blue}{{x1}^{2}}}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      5. pow2 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(4 \cdot \frac{x1 \cdot x2}{1 + x1 \cdot \color{blue}{x1}}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      6. lift-*.f64 70.0

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(4 \cdot \frac{x1 \cdot x2}{1 + x1 \cdot \color{blue}{x1}}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   4. Applied rewrites 70.0%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\color{blue}{\left(4 \cdot \frac{x1 \cdot x2}{1 + x1 \cdot x1}\right)} \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   5. Taylor expanded in x1 around inf

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(4 \cdot \frac{x1 \cdot x2}{1 + x1 \cdot x1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{6}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   6. Step-by-step derivation

   7. Applied rewrites 68.8%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(4 \cdot \frac{x1 \cdot x2}{1 + x1 \cdot x1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{6}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   if 1.90000000000000006e65 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around -inf

      \[\leadsto x1 + \color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{2 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   4. Applied rewrites 48.0%

      \[\leadsto x1 + \color{blue}{\left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - 1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{2 - 2 \cdot \left(1 - -3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]
   6. Step-by-step derivation

      1. lower-/.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      2. lower-+.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      3. lift--.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      4. lift-*.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      5. lift-*.f64 47.1

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

   7. Applied rewrites 47.1%

      \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]
3. Recombined 3 regimes into one program.
4. Add Preprocessing

Alternative 5: 95.8% accurate, 1.3× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := 2 \cdot \frac{x2}{1 + x1 \cdot x1}\\ t_1 := x1 \cdot x1 + 1\\ t_2 := \left(3 \cdot x1\right) \cdot x1\\ t_3 := 2 \cdot x2 - 3\\ t_4 := x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot t\_3\right)}{x1}, 4 \cdot t\_3\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \frac{1}{x1}\right)\right)\\ \mathbf{if}\;x1 \leq -13:\\ \;\;\;\;t\_4\\ \mathbf{elif}\;x1 \leq 24.5:\\ \;\;\;\;x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot t\_0\right) \cdot \left(t\_0 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot t\_0 - 6\right)\right) \cdot t\_1 + t\_2 \cdot t\_0\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(t\_2 - 2 \cdot x2\right) - x1}{t\_1}\right)\\ \mathbf{else}:\\ \;\;\;\;t\_4\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* 2.0 (/ x2 (+ 1.0 (* x1 x1)))))
        (t_1 (+ (* x1 x1) 1.0))
        (t_2 (* (* 3.0 x1) x1))
        (t_3 (- (* 2.0 x2) 3.0))
        (t_4
         (+
          x1
          (+
           (+
            (*
             (pow x1 4.0)
             (+
              6.0
              (*
               -1.0
               (/
                (+
                 3.0
                 (*
                  -1.0
                  (/
                   (+
                    9.0
                    (fma
                     -1.0
                     (/ (+ 3.0 (* -2.0 (+ 1.0 (* 3.0 t_3)))) x1)
                     (* 4.0 t_3)))
                   x1)))
                x1))))
            x1)
           (- 9.0 (* 3.0 (/ 1.0 x1)))))))
   (if (<= x1 -13.0)
     t_4
     (if (<= x1 24.5)
       (+
        x1
        (+
         (+
          (+
           (+
            (*
             (+
              (* (* (* 2.0 x1) t_0) (- t_0 3.0))
              (* (* x1 x1) (- (* 4.0 t_0) 6.0)))
             t_1)
            (* t_2 t_0))
           (* (* x1 x1) x1))
          x1)
         (* 3.0 (/ (- (- t_2 (* 2.0 x2)) x1) t_1))))
       t_4))))

C

double code(double x1, double x2) {
	double t_0 = 2.0 * (x2 / (1.0 + (x1 * x1)));
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = (3.0 * x1) * x1;
	double t_3 = (2.0 * x2) - 3.0;
	double t_4 = x1 + (((pow(x1, 4.0) * (6.0 + (-1.0 * ((3.0 + (-1.0 * ((9.0 + fma(-1.0, ((3.0 + (-2.0 * (1.0 + (3.0 * t_3)))) / x1), (4.0 * t_3))) / x1))) / x1)))) + x1) + (9.0 - (3.0 * (1.0 / x1))));
	double tmp;
	if (x1 <= -13.0) {
		tmp = t_4;
	} else if (x1 <= 24.5) {
		tmp = x1 + (((((((((2.0 * x1) * t_0) * (t_0 - 3.0)) + ((x1 * x1) * ((4.0 * t_0) - 6.0))) * t_1) + (t_2 * t_0)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_2 - (2.0 * x2)) - x1) / t_1)));
	} else {
		tmp = t_4;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(2.0 * Float64(x2 / Float64(1.0 + Float64(x1 * x1))))
	t_1 = Float64(Float64(x1 * x1) + 1.0)
	t_2 = Float64(Float64(3.0 * x1) * x1)
	t_3 = Float64(Float64(2.0 * x2) - 3.0)
	t_4 = Float64(x1 + Float64(Float64(Float64((x1 ^ 4.0) * Float64(6.0 + Float64(-1.0 * Float64(Float64(3.0 + Float64(-1.0 * Float64(Float64(9.0 + fma(-1.0, Float64(Float64(3.0 + Float64(-2.0 * Float64(1.0 + Float64(3.0 * t_3)))) / x1), Float64(4.0 * t_3))) / x1))) / x1)))) + x1) + Float64(9.0 - Float64(3.0 * Float64(1.0 / x1)))))
	tmp = 0.0
	if (x1 <= -13.0)
		tmp = t_4;
	elseif (x1 <= 24.5)
		tmp = Float64(x1 + Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(2.0 * x1) * t_0) * Float64(t_0 - 3.0)) + Float64(Float64(x1 * x1) * Float64(Float64(4.0 * t_0) - 6.0))) * t_1) + Float64(t_2 * t_0)) + Float64(Float64(x1 * x1) * x1)) + x1) + Float64(3.0 * Float64(Float64(Float64(t_2 - Float64(2.0 * x2)) - x1) / t_1))));
	else
		tmp = t_4;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(2.0 * N[(x2 / N[(1.0 + N[(x1 * x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$1 = N[(N[(x1 * x1), $MachinePrecision] + 1.0), $MachinePrecision]}, Block[{t$95$2 = N[(N[(3.0 * x1), $MachinePrecision] * x1), $MachinePrecision]}, Block[{t$95$3 = N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]}, Block[{t$95$4 = N[(x1 + N[(N[(N[(N[Power[x1, 4.0], $MachinePrecision] * N[(6.0 + N[(-1.0 * N[(N[(3.0 + N[(-1.0 * N[(N[(9.0 + N[(-1.0 * N[(N[(3.0 + N[(-2.0 * N[(1.0 + N[(3.0 * t$95$3), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision] + N[(4.0 * t$95$3), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(9.0 - N[(3.0 * N[(1.0 / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -13.0], t$95$4, If[LessEqual[x1, 24.5], N[(x1 + N[(N[(N[(N[(N[(N[(N[(N[(N[(2.0 * x1), $MachinePrecision] * t$95$0), $MachinePrecision] * N[(t$95$0 - 3.0), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * N[(N[(4.0 * t$95$0), $MachinePrecision] - 6.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * t$95$1), $MachinePrecision] + N[(t$95$2 * t$95$0), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * x1), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(3.0 * N[(N[(N[(t$95$2 - N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$4]]]]]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -13 or 24.5 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around -inf

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot \left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)\right)\right)}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \color{blue}{\left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)\right)}\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \color{blue}{\left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)}\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      3. fp-cancel-sub-sign-inv N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} + \color{blue}{\left(\mathsf{neg}\left(8\right)\right) \cdot \frac{1}{1 + {x1}^{2}}}\right)\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      4. lower-fma.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \color{blue}{\frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2}}, \left(\mathsf{neg}\left(8\right)\right) \cdot \frac{1}{1 + {x1}^{2}}\right)\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   4. Applied rewrites 71.4%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \frac{4 \cdot \left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \frac{x1}{1 + x1 \cdot x1}\right) - 6}{x2}, -8 \cdot \frac{1}{1 + x1 \cdot x1}\right)\right)\right)}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   5. Taylor expanded in x1 around -inf

      \[\leadsto x1 + \left(\left(\color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-pow.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(\color{blue}{6} + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   7. Applied rewrites 27.1%

      \[\leadsto x1 + \left(\left(\color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   8. Taylor expanded in x1 around inf

      \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \color{blue}{\left(9 - 3 \cdot \frac{1}{x1}\right)}\right) \]
   9. Step-by-step derivation

      1. lower--.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - \color{blue}{3 \cdot \frac{1}{x1}}\right)\right) \]

      2. lift-/.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \frac{1}{\color{blue}{x1}}\right)\right) \]

      3. lift-*.f64 47.5

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \color{blue}{\frac{1}{x1}}\right)\right) \]

   10. Applied rewrites 47.5%

       \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \color{blue}{\left(9 - 3 \cdot \frac{1}{x1}\right)}\right) \]

   if -13 < x1 < 24.5

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around inf

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \color{blue}{\left(2 \cdot \frac{x2}{1 + {x1}^{2}}\right)}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \color{blue}{\frac{x2}{1 + {x1}^{2}}}\right)\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-/.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{\color{blue}{1 + {x1}^{2}}}\right)\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      3. lower-+.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + \color{blue}{{x1}^{2}}}\right)\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      4. pow2 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot \color{blue}{x1}}\right)\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      5. lift-*.f64 70.5

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot \color{blue}{x1}}\right)\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   4. Applied rewrites 70.5%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \color{blue}{\left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   5. Taylor expanded in x2 around inf

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(\color{blue}{2 \cdot \frac{x2}{1 + {x1}^{2}}} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \color{blue}{\frac{x2}{1 + {x1}^{2}}} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-/.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{\color{blue}{1 + {x1}^{2}}} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      3. lower-+.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + \color{blue}{{x1}^{2}}} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      4. pow2 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot \color{blue}{x1}} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      5. lift-*.f64 70.5

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot \color{blue}{x1}} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   7. Applied rewrites 70.5%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(\color{blue}{2 \cdot \frac{x2}{1 + x1 \cdot x1}} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   8. Taylor expanded in x2 around inf

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \color{blue}{\left(2 \cdot \frac{x2}{1 + {x1}^{2}}\right)} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   9. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \color{blue}{\frac{x2}{1 + {x1}^{2}}}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-/.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{\color{blue}{1 + {x1}^{2}}}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      3. lower-+.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{1 + \color{blue}{{x1}^{2}}}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      4. pow2 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot \color{blue}{x1}}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      5. lift-*.f64 55.5

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot \color{blue}{x1}}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   10. Applied rewrites 55.5%

       \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \color{blue}{\left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   11. Taylor expanded in x2 around inf

       \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \color{blue}{\left(2 \cdot \frac{x2}{1 + {x1}^{2}}\right)}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   12. Step-by-step derivation

       1. lower-*.f64 N/A

          \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \left(2 \cdot \color{blue}{\frac{x2}{1 + {x1}^{2}}}\right)\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

       2. lower-/.f64 N/A

          \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{\color{blue}{1 + {x1}^{2}}}\right)\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

       3. lower-+.f64 N/A

          \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + \color{blue}{{x1}^{2}}}\right)\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

       4. pow2 N/A

          \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot \color{blue}{x1}}\right)\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

       5. lift-*.f64 55.5

          \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot \color{blue}{x1}}\right)\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   13. Applied rewrites 55.5%

       \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)\right) \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \color{blue}{\left(2 \cdot \frac{x2}{1 + x1 \cdot x1}\right)}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 6: 95.7% accurate, 1.4× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\\ t_1 := x1 \cdot x1 + 1\\ t_2 := \left(3 \cdot x1\right) \cdot x1\\ t_3 := 2 \cdot x2 - 3\\ t_4 := x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot t\_3\right)}{x1}, 4 \cdot t\_3\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \frac{1}{x1}\right)\right)\\ \mathbf{if}\;x1 \leq -12.5:\\ \;\;\;\;t\_4\\ \mathbf{elif}\;x1 \leq 13.2:\\ \;\;\;\;x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot t\_0\right) \cdot \left(t\_0 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot t\_0 - 6\right)\right) \cdot t\_1 + t\_2 \cdot t\_0\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(t\_2 - 2 \cdot x2\right) - x1}{t\_1}\right)\\ \mathbf{else}:\\ \;\;\;\;t\_4\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (fma -1.0 x1 (* 2.0 x2)))
        (t_1 (+ (* x1 x1) 1.0))
        (t_2 (* (* 3.0 x1) x1))
        (t_3 (- (* 2.0 x2) 3.0))
        (t_4
         (+
          x1
          (+
           (+
            (*
             (pow x1 4.0)
             (+
              6.0
              (*
               -1.0
               (/
                (+
                 3.0
                 (*
                  -1.0
                  (/
                   (+
                    9.0
                    (fma
                     -1.0
                     (/ (+ 3.0 (* -2.0 (+ 1.0 (* 3.0 t_3)))) x1)
                     (* 4.0 t_3)))
                   x1)))
                x1))))
            x1)
           (- 9.0 (* 3.0 (/ 1.0 x1)))))))
   (if (<= x1 -12.5)
     t_4
     (if (<= x1 13.2)
       (+
        x1
        (+
         (+
          (+
           (+
            (*
             (+
              (* (* (* 2.0 x1) t_0) (- t_0 3.0))
              (* (* x1 x1) (- (* 4.0 t_0) 6.0)))
             t_1)
            (* t_2 t_0))
           (* (* x1 x1) x1))
          x1)
         (* 3.0 (/ (- (- t_2 (* 2.0 x2)) x1) t_1))))
       t_4))))

C

double code(double x1, double x2) {
	double t_0 = fma(-1.0, x1, (2.0 * x2));
	double t_1 = (x1 * x1) + 1.0;
	double t_2 = (3.0 * x1) * x1;
	double t_3 = (2.0 * x2) - 3.0;
	double t_4 = x1 + (((pow(x1, 4.0) * (6.0 + (-1.0 * ((3.0 + (-1.0 * ((9.0 + fma(-1.0, ((3.0 + (-2.0 * (1.0 + (3.0 * t_3)))) / x1), (4.0 * t_3))) / x1))) / x1)))) + x1) + (9.0 - (3.0 * (1.0 / x1))));
	double tmp;
	if (x1 <= -12.5) {
		tmp = t_4;
	} else if (x1 <= 13.2) {
		tmp = x1 + (((((((((2.0 * x1) * t_0) * (t_0 - 3.0)) + ((x1 * x1) * ((4.0 * t_0) - 6.0))) * t_1) + (t_2 * t_0)) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_2 - (2.0 * x2)) - x1) / t_1)));
	} else {
		tmp = t_4;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = fma(-1.0, x1, Float64(2.0 * x2))
	t_1 = Float64(Float64(x1 * x1) + 1.0)
	t_2 = Float64(Float64(3.0 * x1) * x1)
	t_3 = Float64(Float64(2.0 * x2) - 3.0)
	t_4 = Float64(x1 + Float64(Float64(Float64((x1 ^ 4.0) * Float64(6.0 + Float64(-1.0 * Float64(Float64(3.0 + Float64(-1.0 * Float64(Float64(9.0 + fma(-1.0, Float64(Float64(3.0 + Float64(-2.0 * Float64(1.0 + Float64(3.0 * t_3)))) / x1), Float64(4.0 * t_3))) / x1))) / x1)))) + x1) + Float64(9.0 - Float64(3.0 * Float64(1.0 / x1)))))
	tmp = 0.0
	if (x1 <= -12.5)
		tmp = t_4;
	elseif (x1 <= 13.2)
		tmp = Float64(x1 + Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(2.0 * x1) * t_0) * Float64(t_0 - 3.0)) + Float64(Float64(x1 * x1) * Float64(Float64(4.0 * t_0) - 6.0))) * t_1) + Float64(t_2 * t_0)) + Float64(Float64(x1 * x1) * x1)) + x1) + Float64(3.0 * Float64(Float64(Float64(t_2 - Float64(2.0 * x2)) - x1) / t_1))));
	else
		tmp = t_4;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(-1.0 * x1 + N[(2.0 * x2), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$1 = N[(N[(x1 * x1), $MachinePrecision] + 1.0), $MachinePrecision]}, Block[{t$95$2 = N[(N[(3.0 * x1), $MachinePrecision] * x1), $MachinePrecision]}, Block[{t$95$3 = N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]}, Block[{t$95$4 = N[(x1 + N[(N[(N[(N[Power[x1, 4.0], $MachinePrecision] * N[(6.0 + N[(-1.0 * N[(N[(3.0 + N[(-1.0 * N[(N[(9.0 + N[(-1.0 * N[(N[(3.0 + N[(-2.0 * N[(1.0 + N[(3.0 * t$95$3), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision] + N[(4.0 * t$95$3), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(9.0 - N[(3.0 * N[(1.0 / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -12.5], t$95$4, If[LessEqual[x1, 13.2], N[(x1 + N[(N[(N[(N[(N[(N[(N[(N[(N[(2.0 * x1), $MachinePrecision] * t$95$0), $MachinePrecision] * N[(t$95$0 - 3.0), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * N[(N[(4.0 * t$95$0), $MachinePrecision] - 6.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * t$95$1), $MachinePrecision] + N[(t$95$2 * t$95$0), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * x1), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(3.0 * N[(N[(N[(t$95$2 - N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$4]]]]]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -12.5 or 13.199999999999999 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around -inf

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot \left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)\right)\right)}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \color{blue}{\left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)\right)}\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \color{blue}{\left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)}\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      3. fp-cancel-sub-sign-inv N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} + \color{blue}{\left(\mathsf{neg}\left(8\right)\right) \cdot \frac{1}{1 + {x1}^{2}}}\right)\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      4. lower-fma.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \color{blue}{\frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2}}, \left(\mathsf{neg}\left(8\right)\right) \cdot \frac{1}{1 + {x1}^{2}}\right)\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   4. Applied rewrites 71.4%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \frac{4 \cdot \left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \frac{x1}{1 + x1 \cdot x1}\right) - 6}{x2}, -8 \cdot \frac{1}{1 + x1 \cdot x1}\right)\right)\right)}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   5. Taylor expanded in x1 around -inf

      \[\leadsto x1 + \left(\left(\color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-pow.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(\color{blue}{6} + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   7. Applied rewrites 27.1%

      \[\leadsto x1 + \left(\left(\color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   8. Taylor expanded in x1 around inf

      \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \color{blue}{\left(9 - 3 \cdot \frac{1}{x1}\right)}\right) \]
   9. Step-by-step derivation

      1. lower--.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - \color{blue}{3 \cdot \frac{1}{x1}}\right)\right) \]

      2. lift-/.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \frac{1}{\color{blue}{x1}}\right)\right) \]

      3. lift-*.f64 47.5

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \color{blue}{\frac{1}{x1}}\right)\right) \]

   10. Applied rewrites 47.5%

       \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \color{blue}{\left(9 - 3 \cdot \frac{1}{x1}\right)}\right) \]

   if -12.5 < x1 < 13.199999999999999

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around 0

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot x1 + 2 \cdot x2\right)}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   3. Step-by-step derivation

      1. lower-fma.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, \color{blue}{x1}, 2 \cdot x2\right)\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lift-*.f64 67.6

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   4. Applied rewrites 67.6%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \color{blue}{\mathsf{fma}\left(-1, x1, 2 \cdot x2\right)}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\color{blue}{\left(-1 \cdot x1 + 2 \cdot x2\right)} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   6. Step-by-step derivation

      1. lower-fma.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\mathsf{fma}\left(-1, \color{blue}{x1}, 2 \cdot x2\right) - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lift-*.f64 59.8

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   7. Applied rewrites 59.8%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\color{blue}{\mathsf{fma}\left(-1, x1, 2 \cdot x2\right)} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   8. Taylor expanded in x1 around 0

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \color{blue}{\left(-1 \cdot x1 + 2 \cdot x2\right)} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   9. Step-by-step derivation

      1. lower-fma.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \mathsf{fma}\left(-1, \color{blue}{x1}, 2 \cdot x2\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lift-*.f64 55.4

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   10. Applied rewrites 55.4%

       \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \color{blue}{\mathsf{fma}\left(-1, x1, 2 \cdot x2\right)} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   11. Taylor expanded in x1 around 0

       \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot x1 + 2 \cdot x2\right)}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   12. Step-by-step derivation

       1. lower-fma.f64 N/A

          \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \mathsf{fma}\left(-1, \color{blue}{x1}, 2 \cdot x2\right)\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

       2. lift-*.f64 55.3

          \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   13. Applied rewrites 55.3%

       \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right)\right) \cdot \left(\mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \mathsf{fma}\left(-1, x1, 2 \cdot x2\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \color{blue}{\mathsf{fma}\left(-1, x1, 2 \cdot x2\right)}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 7: 95.5% accurate, 1.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := x1 \cdot x1 + 1\\ t_1 := \left(3 \cdot x1\right) \cdot x1\\ t_2 := 2 \cdot x2 - 3\\ t_3 := x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot t\_2\right)}{x1}, 4 \cdot t\_2\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \frac{1}{x1}\right)\right)\\ \mathbf{if}\;x1 \leq -5.2:\\ \;\;\;\;t\_3\\ \mathbf{elif}\;x1 \leq 13.2:\\ \;\;\;\;x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot x2\right)\right) \cdot t\_2 + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot x2\right) - 6\right)\right) \cdot t\_0 + t\_1 \cdot \left(2 \cdot x2\right)\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(t\_1 - 2 \cdot x2\right) - x1}{t\_0}\right)\\ \mathbf{else}:\\ \;\;\;\;t\_3\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (+ (* x1 x1) 1.0))
        (t_1 (* (* 3.0 x1) x1))
        (t_2 (- (* 2.0 x2) 3.0))
        (t_3
         (+
          x1
          (+
           (+
            (*
             (pow x1 4.0)
             (+
              6.0
              (*
               -1.0
               (/
                (+
                 3.0
                 (*
                  -1.0
                  (/
                   (+
                    9.0
                    (fma
                     -1.0
                     (/ (+ 3.0 (* -2.0 (+ 1.0 (* 3.0 t_2)))) x1)
                     (* 4.0 t_2)))
                   x1)))
                x1))))
            x1)
           (- 9.0 (* 3.0 (/ 1.0 x1)))))))
   (if (<= x1 -5.2)
     t_3
     (if (<= x1 13.2)
       (+
        x1
        (+
         (+
          (+
           (+
            (*
             (+
              (* (* (* 2.0 x1) (* 2.0 x2)) t_2)
              (* (* x1 x1) (- (* 4.0 (* 2.0 x2)) 6.0)))
             t_0)
            (* t_1 (* 2.0 x2)))
           (* (* x1 x1) x1))
          x1)
         (* 3.0 (/ (- (- t_1 (* 2.0 x2)) x1) t_0))))
       t_3))))

C

double code(double x1, double x2) {
	double t_0 = (x1 * x1) + 1.0;
	double t_1 = (3.0 * x1) * x1;
	double t_2 = (2.0 * x2) - 3.0;
	double t_3 = x1 + (((pow(x1, 4.0) * (6.0 + (-1.0 * ((3.0 + (-1.0 * ((9.0 + fma(-1.0, ((3.0 + (-2.0 * (1.0 + (3.0 * t_2)))) / x1), (4.0 * t_2))) / x1))) / x1)))) + x1) + (9.0 - (3.0 * (1.0 / x1))));
	double tmp;
	if (x1 <= -5.2) {
		tmp = t_3;
	} else if (x1 <= 13.2) {
		tmp = x1 + (((((((((2.0 * x1) * (2.0 * x2)) * t_2) + ((x1 * x1) * ((4.0 * (2.0 * x2)) - 6.0))) * t_0) + (t_1 * (2.0 * x2))) + ((x1 * x1) * x1)) + x1) + (3.0 * (((t_1 - (2.0 * x2)) - x1) / t_0)));
	} else {
		tmp = t_3;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(Float64(x1 * x1) + 1.0)
	t_1 = Float64(Float64(3.0 * x1) * x1)
	t_2 = Float64(Float64(2.0 * x2) - 3.0)
	t_3 = Float64(x1 + Float64(Float64(Float64((x1 ^ 4.0) * Float64(6.0 + Float64(-1.0 * Float64(Float64(3.0 + Float64(-1.0 * Float64(Float64(9.0 + fma(-1.0, Float64(Float64(3.0 + Float64(-2.0 * Float64(1.0 + Float64(3.0 * t_2)))) / x1), Float64(4.0 * t_2))) / x1))) / x1)))) + x1) + Float64(9.0 - Float64(3.0 * Float64(1.0 / x1)))))
	tmp = 0.0
	if (x1 <= -5.2)
		tmp = t_3;
	elseif (x1 <= 13.2)
		tmp = Float64(x1 + Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(2.0 * x1) * Float64(2.0 * x2)) * t_2) + Float64(Float64(x1 * x1) * Float64(Float64(4.0 * Float64(2.0 * x2)) - 6.0))) * t_0) + Float64(t_1 * Float64(2.0 * x2))) + Float64(Float64(x1 * x1) * x1)) + x1) + Float64(3.0 * Float64(Float64(Float64(t_1 - Float64(2.0 * x2)) - x1) / t_0))));
	else
		tmp = t_3;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(x1 * x1), $MachinePrecision] + 1.0), $MachinePrecision]}, Block[{t$95$1 = N[(N[(3.0 * x1), $MachinePrecision] * x1), $MachinePrecision]}, Block[{t$95$2 = N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]}, Block[{t$95$3 = N[(x1 + N[(N[(N[(N[Power[x1, 4.0], $MachinePrecision] * N[(6.0 + N[(-1.0 * N[(N[(3.0 + N[(-1.0 * N[(N[(9.0 + N[(-1.0 * N[(N[(3.0 + N[(-2.0 * N[(1.0 + N[(3.0 * t$95$2), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision] + N[(4.0 * t$95$2), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(9.0 - N[(3.0 * N[(1.0 / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -5.2], t$95$3, If[LessEqual[x1, 13.2], N[(x1 + N[(N[(N[(N[(N[(N[(N[(N[(N[(2.0 * x1), $MachinePrecision] * N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] * t$95$2), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * N[(N[(4.0 * N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - 6.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * t$95$0), $MachinePrecision] + N[(t$95$1 * N[(2.0 * x2), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[(x1 * x1), $MachinePrecision] * x1), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(3.0 * N[(N[(N[(t$95$1 - N[(2.0 * x2), $MachinePrecision]), $MachinePrecision] - x1), $MachinePrecision] / t$95$0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$3]]]]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -5.20000000000000018 or 13.199999999999999 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around -inf

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot \left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)\right)\right)}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \color{blue}{\left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)\right)}\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \color{blue}{\left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)}\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      3. fp-cancel-sub-sign-inv N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} + \color{blue}{\left(\mathsf{neg}\left(8\right)\right) \cdot \frac{1}{1 + {x1}^{2}}}\right)\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      4. lower-fma.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \color{blue}{\frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2}}, \left(\mathsf{neg}\left(8\right)\right) \cdot \frac{1}{1 + {x1}^{2}}\right)\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   4. Applied rewrites 71.4%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \frac{4 \cdot \left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \frac{x1}{1 + x1 \cdot x1}\right) - 6}{x2}, -8 \cdot \frac{1}{1 + x1 \cdot x1}\right)\right)\right)}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   5. Taylor expanded in x1 around -inf

      \[\leadsto x1 + \left(\left(\color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-pow.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(\color{blue}{6} + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   7. Applied rewrites 27.1%

      \[\leadsto x1 + \left(\left(\color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   8. Taylor expanded in x1 around inf

      \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \color{blue}{\left(9 - 3 \cdot \frac{1}{x1}\right)}\right) \]
   9. Step-by-step derivation

      1. lower--.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - \color{blue}{3 \cdot \frac{1}{x1}}\right)\right) \]

      2. lift-/.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \frac{1}{\color{blue}{x1}}\right)\right) \]

      3. lift-*.f64 47.5

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \color{blue}{\frac{1}{x1}}\right)\right) \]

   10. Applied rewrites 47.5%

       \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \color{blue}{\left(9 - 3 \cdot \frac{1}{x1}\right)}\right) \]

   if -5.20000000000000018 < x1 < 13.199999999999999

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around 0

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \color{blue}{\left(2 \cdot x2\right)}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   3. Step-by-step derivation

      1. lift-*.f64 67.6

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot \color{blue}{x2}\right)\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   4. Applied rewrites 67.6%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \color{blue}{\left(2 \cdot x2\right)}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot x2\right)\right) \cdot \left(\color{blue}{2 \cdot x2} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   6. Step-by-step derivation

      1. lift-*.f64 66.9

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot x2\right)\right) \cdot \left(2 \cdot \color{blue}{x2} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   7. Applied rewrites 66.9%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot x2\right)\right) \cdot \left(\color{blue}{2 \cdot x2} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   8. Taylor expanded in x1 around 0

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot x2\right)\right) \cdot \left(2 \cdot x2 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \color{blue}{\left(2 \cdot x2\right)} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   9. Step-by-step derivation

      1. lift-*.f64 54.3

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot x2\right)\right) \cdot \left(2 \cdot x2 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot \color{blue}{x2}\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   10. Applied rewrites 54.3%

       \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot x2\right)\right) \cdot \left(2 \cdot x2 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \color{blue}{\left(2 \cdot x2\right)} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   11. Taylor expanded in x1 around 0

       \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot x2\right)\right) \cdot \left(2 \cdot x2 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot x2\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \color{blue}{\left(2 \cdot x2\right)}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   12. Step-by-step derivation

       1. lift-*.f64 54.3

          \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot x2\right)\right) \cdot \left(2 \cdot x2 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot x2\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \left(2 \cdot \color{blue}{x2}\right)\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   13. Applied rewrites 54.3%

       \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \left(2 \cdot x2\right)\right) \cdot \left(2 \cdot x2 - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \left(2 \cdot x2\right) - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \color{blue}{\left(2 \cdot x2\right)}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 8: 90.3% accurate, 1.8× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := 2 \cdot x2 - 3\\ t_1 := x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot t\_0\right)}{x1}, 4 \cdot t\_0\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \frac{1}{x1}\right)\right)\\ \mathbf{if}\;x1 \leq -12.5:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;x1 \leq 23.5:\\ \;\;\;\;\mathsf{fma}\left(-6, x2, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (- (* 2.0 x2) 3.0))
        (t_1
         (+
          x1
          (+
           (+
            (*
             (pow x1 4.0)
             (+
              6.0
              (*
               -1.0
               (/
                (+
                 3.0
                 (*
                  -1.0
                  (/
                   (+
                    9.0
                    (fma
                     -1.0
                     (/ (+ 3.0 (* -2.0 (+ 1.0 (* 3.0 t_0)))) x1)
                     (* 4.0 t_0)))
                   x1)))
                x1))))
            x1)
           (- 9.0 (* 3.0 (/ 1.0 x1)))))))
   (if (<= x1 -12.5)
     t_1
     (if (<= x1 23.5)
       (fma
        -6.0
        x2
        (* x1 (- (fma x1 (+ 9.0 (* 12.0 x2)) (* x2 (- (* 8.0 x2) 12.0))) 1.0)))
       t_1))))

C

double code(double x1, double x2) {
	double t_0 = (2.0 * x2) - 3.0;
	double t_1 = x1 + (((pow(x1, 4.0) * (6.0 + (-1.0 * ((3.0 + (-1.0 * ((9.0 + fma(-1.0, ((3.0 + (-2.0 * (1.0 + (3.0 * t_0)))) / x1), (4.0 * t_0))) / x1))) / x1)))) + x1) + (9.0 - (3.0 * (1.0 / x1))));
	double tmp;
	if (x1 <= -12.5) {
		tmp = t_1;
	} else if (x1 <= 23.5) {
		tmp = fma(-6.0, x2, (x1 * (fma(x1, (9.0 + (12.0 * x2)), (x2 * ((8.0 * x2) - 12.0))) - 1.0)));
	} else {
		tmp = t_1;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(Float64(2.0 * x2) - 3.0)
	t_1 = Float64(x1 + Float64(Float64(Float64((x1 ^ 4.0) * Float64(6.0 + Float64(-1.0 * Float64(Float64(3.0 + Float64(-1.0 * Float64(Float64(9.0 + fma(-1.0, Float64(Float64(3.0 + Float64(-2.0 * Float64(1.0 + Float64(3.0 * t_0)))) / x1), Float64(4.0 * t_0))) / x1))) / x1)))) + x1) + Float64(9.0 - Float64(3.0 * Float64(1.0 / x1)))))
	tmp = 0.0
	if (x1 <= -12.5)
		tmp = t_1;
	elseif (x1 <= 23.5)
		tmp = fma(-6.0, x2, Float64(x1 * Float64(fma(x1, Float64(9.0 + Float64(12.0 * x2)), Float64(x2 * Float64(Float64(8.0 * x2) - 12.0))) - 1.0)));
	else
		tmp = t_1;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]}, Block[{t$95$1 = N[(x1 + N[(N[(N[(N[Power[x1, 4.0], $MachinePrecision] * N[(6.0 + N[(-1.0 * N[(N[(3.0 + N[(-1.0 * N[(N[(9.0 + N[(-1.0 * N[(N[(3.0 + N[(-2.0 * N[(1.0 + N[(3.0 * t$95$0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision] + N[(4.0 * t$95$0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + x1), $MachinePrecision] + N[(9.0 - N[(3.0 * N[(1.0 / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -12.5], t$95$1, If[LessEqual[x1, 23.5], N[(-6.0 * x2 + N[(x1 * N[(N[(x1 * N[(9.0 + N[(12.0 * x2), $MachinePrecision]), $MachinePrecision] + N[(x2 * N[(N[(8.0 * x2), $MachinePrecision] - 12.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$1]]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -12.5 or 23.5 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around -inf

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot \left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)\right)\right)}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \color{blue}{\left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)\right)}\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \color{blue}{\left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} - 8 \cdot \frac{1}{1 + {x1}^{2}}\right)}\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      3. fp-cancel-sub-sign-inv N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \left(-1 \cdot \frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2} + \color{blue}{\left(\mathsf{neg}\left(8\right)\right) \cdot \frac{1}{1 + {x1}^{2}}}\right)\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      4. lower-fma.f64 N/A

         \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \color{blue}{\frac{4 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \frac{x1}{1 + {x1}^{2}}\right) - 6}{x2}}, \left(\mathsf{neg}\left(8\right)\right) \cdot \frac{1}{1 + {x1}^{2}}\right)\right)\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   4. Applied rewrites 71.4%

      \[\leadsto x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \color{blue}{\left(-1 \cdot \left(x2 \cdot \mathsf{fma}\left(-1, \frac{4 \cdot \left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \frac{x1}{1 + x1 \cdot x1}\right) - 6}{x2}, -8 \cdot \frac{1}{1 + x1 \cdot x1}\right)\right)\right)}\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   5. Taylor expanded in x1 around -inf

      \[\leadsto x1 + \left(\left(\color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

      2. lower-pow.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(\color{blue}{6} + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   7. Applied rewrites 27.1%

      \[\leadsto x1 + \left(\left(\color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   8. Taylor expanded in x1 around inf

      \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \color{blue}{\left(9 - 3 \cdot \frac{1}{x1}\right)}\right) \]
   9. Step-by-step derivation

      1. lower--.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - \color{blue}{3 \cdot \frac{1}{x1}}\right)\right) \]

      2. lift-/.f64 N/A

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \frac{1}{\color{blue}{x1}}\right)\right) \]

      3. lift-*.f64 47.5

         \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \left(9 - 3 \cdot \color{blue}{\frac{1}{x1}}\right)\right) \]

   10. Applied rewrites 47.5%

       \[\leadsto x1 + \left(\left({x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{3 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right) + x1\right) + \color{blue}{\left(9 - 3 \cdot \frac{1}{x1}\right)}\right) \]

   if -12.5 < x1 < 23.5

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(x2 \cdot \left(\left(6 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} + \left(8 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}} + \left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(2 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) + 2 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}}\right)}{1 + {x1}^{2}} + 8 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}}\right)\right)\right) - 6 \cdot \frac{1}{1 + {x1}^{2}}\right) + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)\right)} \]

   4. Applied rewrites 70.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(x2, \mathsf{fma}\left(6, \frac{x1 \cdot x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(8, \frac{x1 \cdot x2}{1 + x1 \cdot x1}, \left(1 + x1 \cdot x1\right) \cdot \mathsf{fma}\left(2, \frac{x1 \cdot \left(2 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) + \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}\right)\right)}{1 + x1 \cdot x1}, 8 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1}\right)\right)\right) - 6 \cdot \frac{1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto -6 \cdot x2 + \color{blue}{x1 \cdot \left(\left(x1 \cdot \left(9 + 12 \cdot x2\right) + x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)} \]
   6. Step-by-step derivation

   7. Applied rewrites 68.8%

      \[\leadsto \mathsf{fma}\left(-6, \color{blue}{x2}, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 9: 90.3% accurate, 3.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := 2 \cdot x2 - 3\\ t_1 := x1 + x1 \cdot \mathsf{fma}\left(-1, 2 - 2 \cdot \left(1 - -3 \cdot t\_0\right), x1 \cdot \left(9 + \mathsf{fma}\left(4, t\_0, x1 \cdot \left(6 \cdot x1 - 3\right)\right)\right)\right)\\ \mathbf{if}\;x1 \leq -12.5:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;x1 \leq 23.5:\\ \;\;\;\;\mathsf{fma}\left(-6, x2, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (- (* 2.0 x2) 3.0))
        (t_1
         (+
          x1
          (*
           x1
           (fma
            -1.0
            (- 2.0 (* 2.0 (- 1.0 (* -3.0 t_0))))
            (* x1 (+ 9.0 (fma 4.0 t_0 (* x1 (- (* 6.0 x1) 3.0))))))))))
   (if (<= x1 -12.5)
     t_1
     (if (<= x1 23.5)
       (fma
        -6.0
        x2
        (* x1 (- (fma x1 (+ 9.0 (* 12.0 x2)) (* x2 (- (* 8.0 x2) 12.0))) 1.0)))
       t_1))))

C

double code(double x1, double x2) {
	double t_0 = (2.0 * x2) - 3.0;
	double t_1 = x1 + (x1 * fma(-1.0, (2.0 - (2.0 * (1.0 - (-3.0 * t_0)))), (x1 * (9.0 + fma(4.0, t_0, (x1 * ((6.0 * x1) - 3.0)))))));
	double tmp;
	if (x1 <= -12.5) {
		tmp = t_1;
	} else if (x1 <= 23.5) {
		tmp = fma(-6.0, x2, (x1 * (fma(x1, (9.0 + (12.0 * x2)), (x2 * ((8.0 * x2) - 12.0))) - 1.0)));
	} else {
		tmp = t_1;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(Float64(2.0 * x2) - 3.0)
	t_1 = Float64(x1 + Float64(x1 * fma(-1.0, Float64(2.0 - Float64(2.0 * Float64(1.0 - Float64(-3.0 * t_0)))), Float64(x1 * Float64(9.0 + fma(4.0, t_0, Float64(x1 * Float64(Float64(6.0 * x1) - 3.0))))))))
	tmp = 0.0
	if (x1 <= -12.5)
		tmp = t_1;
	elseif (x1 <= 23.5)
		tmp = fma(-6.0, x2, Float64(x1 * Float64(fma(x1, Float64(9.0 + Float64(12.0 * x2)), Float64(x2 * Float64(Float64(8.0 * x2) - 12.0))) - 1.0)));
	else
		tmp = t_1;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]}, Block[{t$95$1 = N[(x1 + N[(x1 * N[(-1.0 * N[(2.0 - N[(2.0 * N[(1.0 - N[(-3.0 * t$95$0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(x1 * N[(9.0 + N[(4.0 * t$95$0 + N[(x1 * N[(N[(6.0 * x1), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -12.5], t$95$1, If[LessEqual[x1, 23.5], N[(-6.0 * x2 + N[(x1 * N[(N[(x1 * N[(9.0 + N[(12.0 * x2), $MachinePrecision]), $MachinePrecision] + N[(x2 * N[(N[(8.0 * x2), $MachinePrecision] - 12.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$1]]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -12.5 or 23.5 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around -inf

      \[\leadsto x1 + \color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{2 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   4. Applied rewrites 48.0%

      \[\leadsto x1 + \color{blue}{\left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - 1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{2 - 2 \cdot \left(1 - -3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 + x1 \cdot \color{blue}{\left(-1 \cdot \left(2 - 2 \cdot \left(1 - -3 \cdot \left(2 \cdot x2 - 3\right)\right)\right) + x1 \cdot \left(9 + \left(4 \cdot \left(2 \cdot x2 - 3\right) + x1 \cdot \left(6 \cdot x1 - 3\right)\right)\right)\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 + x1 \cdot \left(-1 \cdot \left(2 - 2 \cdot \left(1 - -3 \cdot \left(2 \cdot x2 - 3\right)\right)\right) + \color{blue}{x1 \cdot \left(9 + \left(4 \cdot \left(2 \cdot x2 - 3\right) + x1 \cdot \left(6 \cdot x1 - 3\right)\right)\right)}\right) \]

      2. lower-fma.f64 N/A

         \[\leadsto x1 + x1 \cdot \mathsf{fma}\left(-1, 2 - \color{blue}{2 \cdot \left(1 - -3 \cdot \left(2 \cdot x2 - 3\right)\right)}, x1 \cdot \left(9 + \left(4 \cdot \left(2 \cdot x2 - 3\right) + x1 \cdot \left(6 \cdot x1 - 3\right)\right)\right)\right) \]

   7. Applied rewrites 49.2%

      \[\leadsto x1 + x1 \cdot \color{blue}{\mathsf{fma}\left(-1, 2 - 2 \cdot \left(1 - -3 \cdot \left(2 \cdot x2 - 3\right)\right), x1 \cdot \left(9 + \mathsf{fma}\left(4, 2 \cdot x2 - 3, x1 \cdot \left(6 \cdot x1 - 3\right)\right)\right)\right)} \]

   if -12.5 < x1 < 23.5

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(x2 \cdot \left(\left(6 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} + \left(8 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}} + \left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(2 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) + 2 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}}\right)}{1 + {x1}^{2}} + 8 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}}\right)\right)\right) - 6 \cdot \frac{1}{1 + {x1}^{2}}\right) + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)\right)} \]

   4. Applied rewrites 70.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(x2, \mathsf{fma}\left(6, \frac{x1 \cdot x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(8, \frac{x1 \cdot x2}{1 + x1 \cdot x1}, \left(1 + x1 \cdot x1\right) \cdot \mathsf{fma}\left(2, \frac{x1 \cdot \left(2 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) + \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}\right)\right)}{1 + x1 \cdot x1}, 8 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1}\right)\right)\right) - 6 \cdot \frac{1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto -6 \cdot x2 + \color{blue}{x1 \cdot \left(\left(x1 \cdot \left(9 + 12 \cdot x2\right) + x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)} \]
   6. Step-by-step derivation

   7. Applied rewrites 68.8%

      \[\leadsto \mathsf{fma}\left(-6, \color{blue}{x2}, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 10: 90.3% accurate, 3.6× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := {x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{8 \cdot x2 - 3}{x1}}{x1}\right)\\ \mathbf{if}\;x1 \leq -14.5:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq 23.5:\\ \;\;\;\;\mathsf{fma}\left(-6, x2, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0
         (*
          (pow x1 4.0)
          (+ 6.0 (* -1.0 (/ (+ 3.0 (* -1.0 (/ (- (* 8.0 x2) 3.0) x1))) x1))))))
   (if (<= x1 -14.5)
     t_0
     (if (<= x1 23.5)
       (fma
        -6.0
        x2
        (* x1 (- (fma x1 (+ 9.0 (* 12.0 x2)) (* x2 (- (* 8.0 x2) 12.0))) 1.0)))
       t_0))))

C

double code(double x1, double x2) {
	double t_0 = pow(x1, 4.0) * (6.0 + (-1.0 * ((3.0 + (-1.0 * (((8.0 * x2) - 3.0) / x1))) / x1)));
	double tmp;
	if (x1 <= -14.5) {
		tmp = t_0;
	} else if (x1 <= 23.5) {
		tmp = fma(-6.0, x2, (x1 * (fma(x1, (9.0 + (12.0 * x2)), (x2 * ((8.0 * x2) - 12.0))) - 1.0)));
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64((x1 ^ 4.0) * Float64(6.0 + Float64(-1.0 * Float64(Float64(3.0 + Float64(-1.0 * Float64(Float64(Float64(8.0 * x2) - 3.0) / x1))) / x1))))
	tmp = 0.0
	if (x1 <= -14.5)
		tmp = t_0;
	elseif (x1 <= 23.5)
		tmp = fma(-6.0, x2, Float64(x1 * Float64(fma(x1, Float64(9.0 + Float64(12.0 * x2)), Float64(x2 * Float64(Float64(8.0 * x2) - 12.0))) - 1.0)));
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[Power[x1, 4.0], $MachinePrecision] * N[(6.0 + N[(-1.0 * N[(N[(3.0 + N[(-1.0 * N[(N[(N[(8.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -14.5], t$95$0, If[LessEqual[x1, 23.5], N[(-6.0 * x2 + N[(x1 * N[(N[(x1 * N[(9.0 + N[(12.0 * x2), $MachinePrecision]), $MachinePrecision] + N[(x2 * N[(N[(8.0 * x2), $MachinePrecision] - 12.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$0]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -14.5 or 23.5 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(x2 \cdot \left(\left(6 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} + \left(8 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}} + \left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(2 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) + 2 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}}\right)}{1 + {x1}^{2}} + 8 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}}\right)\right)\right) - 6 \cdot \frac{1}{1 + {x1}^{2}}\right) + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)\right)} \]

   4. Applied rewrites 70.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(x2, \mathsf{fma}\left(6, \frac{x1 \cdot x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(8, \frac{x1 \cdot x2}{1 + x1 \cdot x1}, \left(1 + x1 \cdot x1\right) \cdot \mathsf{fma}\left(2, \frac{x1 \cdot \left(2 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) + \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}\right)\right)}{1 + x1 \cdot x1}, 8 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1}\right)\right)\right) - 6 \cdot \frac{1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around -inf

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{8 \cdot x2 - 3}{x1}}{x1}\right)} \]
   6. Step-by-step derivation

   7. Applied rewrites 47.3%

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{8 \cdot x2 - 3}{x1}}{x1}\right)} \]

   if -14.5 < x1 < 23.5

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(x2 \cdot \left(\left(6 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} + \left(8 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}} + \left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(2 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) + 2 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}}\right)}{1 + {x1}^{2}} + 8 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}}\right)\right)\right) - 6 \cdot \frac{1}{1 + {x1}^{2}}\right) + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)\right)} \]

   4. Applied rewrites 70.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(x2, \mathsf{fma}\left(6, \frac{x1 \cdot x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(8, \frac{x1 \cdot x2}{1 + x1 \cdot x1}, \left(1 + x1 \cdot x1\right) \cdot \mathsf{fma}\left(2, \frac{x1 \cdot \left(2 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) + \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}\right)\right)}{1 + x1 \cdot x1}, 8 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1}\right)\right)\right) - 6 \cdot \frac{1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto -6 \cdot x2 + \color{blue}{x1 \cdot \left(\left(x1 \cdot \left(9 + 12 \cdot x2\right) + x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)} \]
   6. Step-by-step derivation

   7. Applied rewrites 68.8%

      \[\leadsto \mathsf{fma}\left(-6, \color{blue}{x2}, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 11: 90.2% accurate, 3.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - 1 \cdot \frac{9 - -4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right)\\ \mathbf{if}\;x1 \leq -14.5:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq 23.5:\\ \;\;\;\;\mathsf{fma}\left(-6, x2, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0
         (*
          (* (* x1 x1) (* x1 x1))
          (-
           6.0
           (*
            1.0
            (/
             (- 3.0 (* 1.0 (/ (- 9.0 (* -4.0 (- (* 2.0 x2) 3.0))) x1)))
             x1))))))
   (if (<= x1 -14.5)
     t_0
     (if (<= x1 23.5)
       (fma
        -6.0
        x2
        (* x1 (- (fma x1 (+ 9.0 (* 12.0 x2)) (* x2 (- (* 8.0 x2) 12.0))) 1.0)))
       t_0))))

C

double code(double x1, double x2) {
	double t_0 = ((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - (1.0 * ((9.0 - (-4.0 * ((2.0 * x2) - 3.0))) / x1))) / x1)));
	double tmp;
	if (x1 <= -14.5) {
		tmp = t_0;
	} else if (x1 <= 23.5) {
		tmp = fma(-6.0, x2, (x1 * (fma(x1, (9.0 + (12.0 * x2)), (x2 * ((8.0 * x2) - 12.0))) - 1.0)));
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(Float64(Float64(x1 * x1) * Float64(x1 * x1)) * Float64(6.0 - Float64(1.0 * Float64(Float64(3.0 - Float64(1.0 * Float64(Float64(9.0 - Float64(-4.0 * Float64(Float64(2.0 * x2) - 3.0))) / x1))) / x1))))
	tmp = 0.0
	if (x1 <= -14.5)
		tmp = t_0;
	elseif (x1 <= 23.5)
		tmp = fma(-6.0, x2, Float64(x1 * Float64(fma(x1, Float64(9.0 + Float64(12.0 * x2)), Float64(x2 * Float64(Float64(8.0 * x2) - 12.0))) - 1.0)));
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(N[(x1 * x1), $MachinePrecision] * N[(x1 * x1), $MachinePrecision]), $MachinePrecision] * N[(6.0 - N[(1.0 * N[(N[(3.0 - N[(1.0 * N[(N[(9.0 - N[(-4.0 * N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -14.5], t$95$0, If[LessEqual[x1, 23.5], N[(-6.0 * x2 + N[(x1 * N[(N[(x1 * N[(9.0 + N[(12.0 * x2), $MachinePrecision]), $MachinePrecision] + N[(x2 * N[(N[(8.0 * x2), $MachinePrecision] - 12.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$0]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -14.5 or 23.5 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around -inf

      \[\leadsto \color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right)} \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right)} \]

   4. Applied rewrites 47.3%

      \[\leadsto \color{blue}{\left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - 1 \cdot \frac{9 - -4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right)} \]

   if -14.5 < x1 < 23.5

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(x2 \cdot \left(\left(6 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} + \left(8 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}} + \left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(2 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) + 2 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}}\right)}{1 + {x1}^{2}} + 8 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}}\right)\right)\right) - 6 \cdot \frac{1}{1 + {x1}^{2}}\right) + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)\right)} \]

   4. Applied rewrites 70.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(x2, \mathsf{fma}\left(6, \frac{x1 \cdot x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(8, \frac{x1 \cdot x2}{1 + x1 \cdot x1}, \left(1 + x1 \cdot x1\right) \cdot \mathsf{fma}\left(2, \frac{x1 \cdot \left(2 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) + \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}\right)\right)}{1 + x1 \cdot x1}, 8 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1}\right)\right)\right) - 6 \cdot \frac{1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto -6 \cdot x2 + \color{blue}{x1 \cdot \left(\left(x1 \cdot \left(9 + 12 \cdot x2\right) + x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)} \]
   6. Step-by-step derivation

   7. Applied rewrites 68.8%

      \[\leadsto \mathsf{fma}\left(-6, \color{blue}{x2}, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 12: 90.2% accurate, 3.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right)\\ \mathbf{if}\;x1 \leq -14.5:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq 23.5:\\ \;\;\;\;\mathsf{fma}\left(-6, x2, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0
         (+
          x1
          (*
           (* (* x1 x1) (* x1 x1))
           (-
            6.0
            (*
             1.0
             (/ (- 3.0 (/ (+ 9.0 (* 4.0 (- (* 2.0 x2) 3.0))) x1)) x1)))))))
   (if (<= x1 -14.5)
     t_0
     (if (<= x1 23.5)
       (fma
        -6.0
        x2
        (* x1 (- (fma x1 (+ 9.0 (* 12.0 x2)) (* x2 (- (* 8.0 x2) 12.0))) 1.0)))
       t_0))))

C

double code(double x1, double x2) {
	double t_0 = x1 + (((x1 * x1) * (x1 * x1)) * (6.0 - (1.0 * ((3.0 - ((9.0 + (4.0 * ((2.0 * x2) - 3.0))) / x1)) / x1))));
	double tmp;
	if (x1 <= -14.5) {
		tmp = t_0;
	} else if (x1 <= 23.5) {
		tmp = fma(-6.0, x2, (x1 * (fma(x1, (9.0 + (12.0 * x2)), (x2 * ((8.0 * x2) - 12.0))) - 1.0)));
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(x1 + Float64(Float64(Float64(x1 * x1) * Float64(x1 * x1)) * Float64(6.0 - Float64(1.0 * Float64(Float64(3.0 - Float64(Float64(9.0 + Float64(4.0 * Float64(Float64(2.0 * x2) - 3.0))) / x1)) / x1)))))
	tmp = 0.0
	if (x1 <= -14.5)
		tmp = t_0;
	elseif (x1 <= 23.5)
		tmp = fma(-6.0, x2, Float64(x1 * Float64(fma(x1, Float64(9.0 + Float64(12.0 * x2)), Float64(x2 * Float64(Float64(8.0 * x2) - 12.0))) - 1.0)));
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(x1 + N[(N[(N[(x1 * x1), $MachinePrecision] * N[(x1 * x1), $MachinePrecision]), $MachinePrecision] * N[(6.0 - N[(1.0 * N[(N[(3.0 - N[(N[(9.0 + N[(4.0 * N[(N[(2.0 * x2), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision] / x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -14.5], t$95$0, If[LessEqual[x1, 23.5], N[(-6.0 * x2 + N[(x1 * N[(N[(x1 * N[(9.0 + N[(12.0 * x2), $MachinePrecision]), $MachinePrecision] + N[(x2 * N[(N[(8.0 * x2), $MachinePrecision] - 12.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$0]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -14.5 or 23.5 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around -inf

      \[\leadsto x1 + \color{blue}{{x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + -1 \cdot \frac{9 + \left(-1 \cdot \frac{2 + -2 \cdot \left(1 + 3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1} + 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   4. Applied rewrites 48.0%

      \[\leadsto x1 + \color{blue}{\left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - 1 \cdot \frac{9 + \mathsf{fma}\left(-1, \frac{2 - 2 \cdot \left(1 - -3 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}, 4 \cdot \left(2 \cdot x2 - 3\right)\right)}{x1}}{x1}\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]
   6. Step-by-step derivation

      1. lower-/.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      2. lower-+.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      3. lift--.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      4. lift-*.f64 N/A

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

      5. lift-*.f64 47.1

         \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

   7. Applied rewrites 47.1%

      \[\leadsto x1 + \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right) \cdot \left(6 - 1 \cdot \frac{3 - \frac{9 + 4 \cdot \left(2 \cdot x2 - 3\right)}{x1}}{x1}\right) \]

   if -14.5 < x1 < 23.5

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(x2 \cdot \left(\left(6 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} + \left(8 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}} + \left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(2 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) + 2 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}}\right)}{1 + {x1}^{2}} + 8 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}}\right)\right)\right) - 6 \cdot \frac{1}{1 + {x1}^{2}}\right) + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)\right)} \]

   4. Applied rewrites 70.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(x2, \mathsf{fma}\left(6, \frac{x1 \cdot x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(8, \frac{x1 \cdot x2}{1 + x1 \cdot x1}, \left(1 + x1 \cdot x1\right) \cdot \mathsf{fma}\left(2, \frac{x1 \cdot \left(2 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) + \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}\right)\right)}{1 + x1 \cdot x1}, 8 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1}\right)\right)\right) - 6 \cdot \frac{1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto -6 \cdot x2 + \color{blue}{x1 \cdot \left(\left(x1 \cdot \left(9 + 12 \cdot x2\right) + x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)} \]
   6. Step-by-step derivation

   7. Applied rewrites 68.8%

      \[\leadsto \mathsf{fma}\left(-6, \color{blue}{x2}, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 13: 88.0% accurate, 4.8× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right)\\ \mathbf{if}\;x1 \leq -14.5:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq 23.5:\\ \;\;\;\;\mathsf{fma}\left(-6, x2, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* x1 (- (* x1 (- (* x1 (- (* 6.0 x1) 3.0)) 3.0)) 17.0))))
   (if (<= x1 -14.5)
     t_0
     (if (<= x1 23.5)
       (fma
        -6.0
        x2
        (* x1 (- (fma x1 (+ 9.0 (* 12.0 x2)) (* x2 (- (* 8.0 x2) 12.0))) 1.0)))
       t_0))))

C

double code(double x1, double x2) {
	double t_0 = x1 * ((x1 * ((x1 * ((6.0 * x1) - 3.0)) - 3.0)) - 17.0);
	double tmp;
	if (x1 <= -14.5) {
		tmp = t_0;
	} else if (x1 <= 23.5) {
		tmp = fma(-6.0, x2, (x1 * (fma(x1, (9.0 + (12.0 * x2)), (x2 * ((8.0 * x2) - 12.0))) - 1.0)));
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(x1 * Float64(Float64(x1 * Float64(Float64(x1 * Float64(Float64(6.0 * x1) - 3.0)) - 3.0)) - 17.0))
	tmp = 0.0
	if (x1 <= -14.5)
		tmp = t_0;
	elseif (x1 <= 23.5)
		tmp = fma(-6.0, x2, Float64(x1 * Float64(fma(x1, Float64(9.0 + Float64(12.0 * x2)), Float64(x2 * Float64(Float64(8.0 * x2) - 12.0))) - 1.0)));
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(x1 * N[(N[(x1 * N[(N[(x1 * N[(N[(6.0 * x1), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision] - 17.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -14.5], t$95$0, If[LessEqual[x1, 23.5], N[(-6.0 * x2 + N[(x1 * N[(N[(x1 * N[(9.0 + N[(12.0 * x2), $MachinePrecision]), $MachinePrecision] + N[(x2 * N[(N[(8.0 * x2), $MachinePrecision] - 12.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$0]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -14.5 or 23.5 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - 3 \cdot \frac{1}{x1}\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - \color{blue}{3 \cdot \frac{1}{x1}}\right) \]

      2. lower-pow.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - \color{blue}{3} \cdot \frac{1}{x1}\right) \]

      3. lower--.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - 3 \cdot \color{blue}{\frac{1}{x1}}\right) \]

   7. Applied rewrites 44.6%

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{x1 \cdot x1}\right) - 3 \cdot \frac{1}{x1}\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - \color{blue}{17}\right) \]
   9. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      3. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      4. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      5. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      6. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      7. lower-*.f64 46.6

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

   10. Applied rewrites 46.6%

       \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - \color{blue}{17}\right) \]

   if -14.5 < x1 < 23.5

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(x2 \cdot \left(\left(6 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} + \left(8 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}} + \left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(2 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) + 2 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}}\right)}{1 + {x1}^{2}} + 8 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}}\right)\right)\right) - 6 \cdot \frac{1}{1 + {x1}^{2}}\right) + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)\right)} \]

   4. Applied rewrites 70.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(x2, \mathsf{fma}\left(6, \frac{x1 \cdot x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(8, \frac{x1 \cdot x2}{1 + x1 \cdot x1}, \left(1 + x1 \cdot x1\right) \cdot \mathsf{fma}\left(2, \frac{x1 \cdot \left(2 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) + \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}\right)\right)}{1 + x1 \cdot x1}, 8 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1}\right)\right)\right) - 6 \cdot \frac{1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto -6 \cdot x2 + \color{blue}{x1 \cdot \left(\left(x1 \cdot \left(9 + 12 \cdot x2\right) + x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)} \]
   6. Step-by-step derivation

   7. Applied rewrites 68.8%

      \[\leadsto \mathsf{fma}\left(-6, \color{blue}{x2}, x1 \cdot \left(\mathsf{fma}\left(x1, 9 + 12 \cdot x2, x2 \cdot \left(8 \cdot x2 - 12\right)\right) - 1\right)\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 14: 87.7% accurate, 6.5× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right)\\ \mathbf{if}\;x1 \leq -12.5:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq 13.2:\\ \;\;\;\;\mathsf{fma}\left(-6, x2, x1 \cdot \left(x2 \cdot \left(8 \cdot x2 - 12\right) - 1\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* x1 (- (* x1 (- (* x1 (- (* 6.0 x1) 3.0)) 3.0)) 17.0))))
   (if (<= x1 -12.5)
     t_0
     (if (<= x1 13.2)
       (fma -6.0 x2 (* x1 (- (* x2 (- (* 8.0 x2) 12.0)) 1.0)))
       t_0))))

C

double code(double x1, double x2) {
	double t_0 = x1 * ((x1 * ((x1 * ((6.0 * x1) - 3.0)) - 3.0)) - 17.0);
	double tmp;
	if (x1 <= -12.5) {
		tmp = t_0;
	} else if (x1 <= 13.2) {
		tmp = fma(-6.0, x2, (x1 * ((x2 * ((8.0 * x2) - 12.0)) - 1.0)));
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(x1 * Float64(Float64(x1 * Float64(Float64(x1 * Float64(Float64(6.0 * x1) - 3.0)) - 3.0)) - 17.0))
	tmp = 0.0
	if (x1 <= -12.5)
		tmp = t_0;
	elseif (x1 <= 13.2)
		tmp = fma(-6.0, x2, Float64(x1 * Float64(Float64(x2 * Float64(Float64(8.0 * x2) - 12.0)) - 1.0)));
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(x1 * N[(N[(x1 * N[(N[(x1 * N[(N[(6.0 * x1), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision] - 17.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -12.5], t$95$0, If[LessEqual[x1, 13.2], N[(-6.0 * x2 + N[(x1 * N[(N[(x2 * N[(N[(8.0 * x2), $MachinePrecision] - 12.0), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$0]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -12.5 or 13.199999999999999 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - 3 \cdot \frac{1}{x1}\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - \color{blue}{3 \cdot \frac{1}{x1}}\right) \]

      2. lower-pow.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - \color{blue}{3} \cdot \frac{1}{x1}\right) \]

      3. lower--.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - 3 \cdot \color{blue}{\frac{1}{x1}}\right) \]

   7. Applied rewrites 44.6%

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{x1 \cdot x1}\right) - 3 \cdot \frac{1}{x1}\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - \color{blue}{17}\right) \]
   9. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      3. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      4. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      5. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      6. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

      7. lower-*.f64 46.6

         \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - 17\right) \]

   10. Applied rewrites 46.6%

       \[\leadsto x1 \cdot \left(x1 \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) - \color{blue}{17}\right) \]

   if -12.5 < x1 < 13.199999999999999

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(x2 \cdot \left(\left(6 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} + \left(8 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}} + \left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(2 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) + 2 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}}\right)}{1 + {x1}^{2}} + 8 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}}\right)\right)\right) - 6 \cdot \frac{1}{1 + {x1}^{2}}\right) + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)\right)} \]

   4. Applied rewrites 70.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(x2, \mathsf{fma}\left(6, \frac{x1 \cdot x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(8, \frac{x1 \cdot x2}{1 + x1 \cdot x1}, \left(1 + x1 \cdot x1\right) \cdot \mathsf{fma}\left(2, \frac{x1 \cdot \left(2 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) + \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}\right)\right)}{1 + x1 \cdot x1}, 8 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1}\right)\right)\right) - 6 \cdot \frac{1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto -6 \cdot x2 + \color{blue}{x1 \cdot \left(x2 \cdot \left(8 \cdot x2 - 12\right) - 1\right)} \]
   6. Step-by-step derivation

   7. Applied rewrites 55.8%

      \[\leadsto \mathsf{fma}\left(-6, \color{blue}{x2}, x1 \cdot \left(x2 \cdot \left(8 \cdot x2 - 12\right) - 1\right)\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 15: 87.7% accurate, 6.6× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right)\\ \mathbf{if}\;x1 \leq -29:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq 23.5:\\ \;\;\;\;\mathsf{fma}\left(-6, x2, x1 \cdot \left(x2 \cdot \left(8 \cdot x2 - 12\right) - 1\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* (* x1 x1) (- (* x1 (- (* 6.0 x1) 3.0)) 3.0))))
   (if (<= x1 -29.0)
     t_0
     (if (<= x1 23.5)
       (fma -6.0 x2 (* x1 (- (* x2 (- (* 8.0 x2) 12.0)) 1.0)))
       t_0))))

C

double code(double x1, double x2) {
	double t_0 = (x1 * x1) * ((x1 * ((6.0 * x1) - 3.0)) - 3.0);
	double tmp;
	if (x1 <= -29.0) {
		tmp = t_0;
	} else if (x1 <= 23.5) {
		tmp = fma(-6.0, x2, (x1 * ((x2 * ((8.0 * x2) - 12.0)) - 1.0)));
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x1, x2)
	t_0 = Float64(Float64(x1 * x1) * Float64(Float64(x1 * Float64(Float64(6.0 * x1) - 3.0)) - 3.0))
	tmp = 0.0
	if (x1 <= -29.0)
		tmp = t_0;
	elseif (x1 <= 23.5)
		tmp = fma(-6.0, x2, Float64(x1 * Float64(Float64(x2 * Float64(Float64(8.0 * x2) - 12.0)) - 1.0)));
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(x1 * x1), $MachinePrecision] * N[(N[(x1 * N[(N[(6.0 * x1), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -29.0], t$95$0, If[LessEqual[x1, 23.5], N[(-6.0 * x2 + N[(x1 * N[(N[(x2 * N[(N[(8.0 * x2), $MachinePrecision] - 12.0), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$0]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -29 or 23.5 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + \color{blue}{-1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}}\right) \]

      2. lower-pow.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + \color{blue}{-1} \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right) \]

      3. lower-+.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \color{blue}{\frac{3 + 3 \cdot \frac{1}{x1}}{x1}}\right) \]

      4. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{\color{blue}{x1}}\right) \]

      5. lower-/.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right) \]

   7. Applied rewrites 44.3%

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto {x1}^{2} \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - \color{blue}{3}\right) \]
   9. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{2} \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      2. pow2 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      3. lift-*.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      4. lower--.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      5. lower-*.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      6. lower--.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      7. lower-*.f64 45.2

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

   10. Applied rewrites 45.2%

       \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - \color{blue}{3}\right) \]

   if -29 < x1 < 23.5

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(x2 \cdot \left(\left(6 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} + \left(8 \cdot \frac{x1 \cdot x2}{1 + {x1}^{2}} + \left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(2 \cdot \left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) + 2 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}}\right)}{1 + {x1}^{2}} + 8 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}}\right)\right)\right) - 6 \cdot \frac{1}{1 + {x1}^{2}}\right) + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)\right)} \]

   4. Applied rewrites 70.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(x2, \mathsf{fma}\left(6, \frac{x1 \cdot x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(8, \frac{x1 \cdot x2}{1 + x1 \cdot x1}, \left(1 + x1 \cdot x1\right) \cdot \mathsf{fma}\left(2, \frac{x1 \cdot \left(2 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) + \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}\right)\right)}{1 + x1 \cdot x1}, 8 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1}\right)\right)\right) - 6 \cdot \frac{1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto -6 \cdot x2 + \color{blue}{x1 \cdot \left(x2 \cdot \left(8 \cdot x2 - 12\right) - 1\right)} \]
   6. Step-by-step derivation

   7. Applied rewrites 55.8%

      \[\leadsto \mathsf{fma}\left(-6, \color{blue}{x2}, x1 \cdot \left(x2 \cdot \left(8 \cdot x2 - 12\right) - 1\right)\right) \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 16: 72.3% accurate, 4.9× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right)\\ \mathbf{if}\;x1 \leq -420:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq -4 \cdot 10^{-39}:\\ \;\;\;\;8 \cdot \frac{x1 \cdot \left(x2 \cdot x2\right)}{1 + x1 \cdot x1}\\ \mathbf{elif}\;x1 \leq -7.7 \cdot 10^{-137}:\\ \;\;\;\;x1 \cdot -1\\ \mathbf{elif}\;x1 \leq 1.65 \cdot 10^{-89}:\\ \;\;\;\;-6 \cdot x2\\ \mathbf{elif}\;x1 \leq 1.36:\\ \;\;\;\;x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* (* x1 x1) (- (* x1 (- (* 6.0 x1) 3.0)) 3.0))))
   (if (<= x1 -420.0)
     t_0
     (if (<= x1 -4e-39)
       (* 8.0 (/ (* x1 (* x2 x2)) (+ 1.0 (* x1 x1))))
       (if (<= x1 -7.7e-137)
         (* x1 -1.0)
         (if (<= x1 1.65e-89)
           (* -6.0 x2)
           (if (<= x1 1.36)
             (* x1 (- (* x1 (+ 9.0 (* -19.0 x1))) 1.0))
             t_0)))))))

C

double code(double x1, double x2) {
	double t_0 = (x1 * x1) * ((x1 * ((6.0 * x1) - 3.0)) - 3.0);
	double tmp;
	if (x1 <= -420.0) {
		tmp = t_0;
	} else if (x1 <= -4e-39) {
		tmp = 8.0 * ((x1 * (x2 * x2)) / (1.0 + (x1 * x1)));
	} else if (x1 <= -7.7e-137) {
		tmp = x1 * -1.0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else if (x1 <= 1.36) {
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    real(8) :: t_0
    real(8) :: tmp
    t_0 = (x1 * x1) * ((x1 * ((6.0d0 * x1) - 3.0d0)) - 3.0d0)
    if (x1 <= (-420.0d0)) then
        tmp = t_0
    else if (x1 <= (-4d-39)) then
        tmp = 8.0d0 * ((x1 * (x2 * x2)) / (1.0d0 + (x1 * x1)))
    else if (x1 <= (-7.7d-137)) then
        tmp = x1 * (-1.0d0)
    else if (x1 <= 1.65d-89) then
        tmp = (-6.0d0) * x2
    else if (x1 <= 1.36d0) then
        tmp = x1 * ((x1 * (9.0d0 + ((-19.0d0) * x1))) - 1.0d0)
    else
        tmp = t_0
    end if
    code = tmp
end function

Java

public static double code(double x1, double x2) {
	double t_0 = (x1 * x1) * ((x1 * ((6.0 * x1) - 3.0)) - 3.0);
	double tmp;
	if (x1 <= -420.0) {
		tmp = t_0;
	} else if (x1 <= -4e-39) {
		tmp = 8.0 * ((x1 * (x2 * x2)) / (1.0 + (x1 * x1)));
	} else if (x1 <= -7.7e-137) {
		tmp = x1 * -1.0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else if (x1 <= 1.36) {
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Python

def code(x1, x2):
	t_0 = (x1 * x1) * ((x1 * ((6.0 * x1) - 3.0)) - 3.0)
	tmp = 0
	if x1 <= -420.0:
		tmp = t_0
	elif x1 <= -4e-39:
		tmp = 8.0 * ((x1 * (x2 * x2)) / (1.0 + (x1 * x1)))
	elif x1 <= -7.7e-137:
		tmp = x1 * -1.0
	elif x1 <= 1.65e-89:
		tmp = -6.0 * x2
	elif x1 <= 1.36:
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0)
	else:
		tmp = t_0
	return tmp

Julia

function code(x1, x2)
	t_0 = Float64(Float64(x1 * x1) * Float64(Float64(x1 * Float64(Float64(6.0 * x1) - 3.0)) - 3.0))
	tmp = 0.0
	if (x1 <= -420.0)
		tmp = t_0;
	elseif (x1 <= -4e-39)
		tmp = Float64(8.0 * Float64(Float64(x1 * Float64(x2 * x2)) / Float64(1.0 + Float64(x1 * x1))));
	elseif (x1 <= -7.7e-137)
		tmp = Float64(x1 * -1.0);
	elseif (x1 <= 1.65e-89)
		tmp = Float64(-6.0 * x2);
	elseif (x1 <= 1.36)
		tmp = Float64(x1 * Float64(Float64(x1 * Float64(9.0 + Float64(-19.0 * x1))) - 1.0));
	else
		tmp = t_0;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x1, x2)
	t_0 = (x1 * x1) * ((x1 * ((6.0 * x1) - 3.0)) - 3.0);
	tmp = 0.0;
	if (x1 <= -420.0)
		tmp = t_0;
	elseif (x1 <= -4e-39)
		tmp = 8.0 * ((x1 * (x2 * x2)) / (1.0 + (x1 * x1)));
	elseif (x1 <= -7.7e-137)
		tmp = x1 * -1.0;
	elseif (x1 <= 1.65e-89)
		tmp = -6.0 * x2;
	elseif (x1 <= 1.36)
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0);
	else
		tmp = t_0;
	end
	tmp_2 = tmp;
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(x1 * x1), $MachinePrecision] * N[(N[(x1 * N[(N[(6.0 * x1), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -420.0], t$95$0, If[LessEqual[x1, -4e-39], N[(8.0 * N[(N[(x1 * N[(x2 * x2), $MachinePrecision]), $MachinePrecision] / N[(1.0 + N[(x1 * x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x1, -7.7e-137], N[(x1 * -1.0), $MachinePrecision], If[LessEqual[x1, 1.65e-89], N[(-6.0 * x2), $MachinePrecision], If[LessEqual[x1, 1.36], N[(x1 * N[(N[(x1 * N[(9.0 + N[(-19.0 * x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision], t$95$0]]]]]]

Derivation

1. Split input into 5 regimes

2. if x1 < -420 or 1.3600000000000001 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + \color{blue}{-1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}}\right) \]

      2. lower-pow.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + \color{blue}{-1} \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right) \]

      3. lower-+.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \color{blue}{\frac{3 + 3 \cdot \frac{1}{x1}}{x1}}\right) \]

      4. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{\color{blue}{x1}}\right) \]

      5. lower-/.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right) \]

   7. Applied rewrites 44.3%

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto {x1}^{2} \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - \color{blue}{3}\right) \]
   9. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{2} \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      2. pow2 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      3. lift-*.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      4. lower--.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      5. lower-*.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      6. lower--.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      7. lower-*.f64 45.2

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

   10. Applied rewrites 45.2%

       \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - \color{blue}{3}\right) \]

   if -420 < x1 < -3.99999999999999972e-39

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around inf

      \[\leadsto \color{blue}{8 \cdot \frac{x1 \cdot {x2}^{2}}{1 + {x1}^{2}}} \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto 8 \cdot \color{blue}{\frac{x1 \cdot {x2}^{2}}{1 + {x1}^{2}}} \]

      2. lower-/.f64 N/A

         \[\leadsto 8 \cdot \frac{x1 \cdot {x2}^{2}}{\color{blue}{1 + {x1}^{2}}} \]

      3. lower-*.f64 N/A

         \[\leadsto 8 \cdot \frac{x1 \cdot {x2}^{2}}{\color{blue}{1} + {x1}^{2}} \]

      4. unpow2 N/A

         \[\leadsto 8 \cdot \frac{x1 \cdot \left(x2 \cdot x2\right)}{1 + {x1}^{2}} \]

      5. lower-*.f64 N/A

         \[\leadsto 8 \cdot \frac{x1 \cdot \left(x2 \cdot x2\right)}{1 + {x1}^{2}} \]

      6. lower-+.f64 N/A

         \[\leadsto 8 \cdot \frac{x1 \cdot \left(x2 \cdot x2\right)}{1 + \color{blue}{{x1}^{2}}} \]

      7. pow2 N/A

         \[\leadsto 8 \cdot \frac{x1 \cdot \left(x2 \cdot x2\right)}{1 + x1 \cdot \color{blue}{x1}} \]

      8. lift-*.f64 17.8

         \[\leadsto 8 \cdot \frac{x1 \cdot \left(x2 \cdot x2\right)}{1 + x1 \cdot \color{blue}{x1}} \]

   4. Applied rewrites 17.8%

      \[\leadsto \color{blue}{8 \cdot \frac{x1 \cdot \left(x2 \cdot x2\right)}{1 + x1 \cdot x1}} \]

   if -3.99999999999999972e-39 < x1 < -7.7000000000000004e-137

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right) \]

   7. Applied rewrites 14.1%

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot -1 \]
   9. Step-by-step derivation

   10. Applied rewrites 14.0%

       \[\leadsto x1 \cdot -1 \]

   if -7.7000000000000004e-137 < x1 < 1.6499999999999998e-89

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around 0

      \[\leadsto \color{blue}{-6 \cdot x2} \]
   3. Step-by-step derivation

      1. lower-*.f64 26.9

         \[\leadsto -6 \cdot \color{blue}{x2} \]

   4. Applied rewrites 26.9%

      \[\leadsto \color{blue}{-6 \cdot x2} \]

   if 1.6499999999999998e-89 < x1 < 1.3600000000000001

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

      3. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

      4. lower-+.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

      5. lower-*.f64 29.5

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

   7. Applied rewrites 29.5%

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right)} \]
3. Recombined 5 regimes into one program.
4. Add Preprocessing

Alternative 17: 71.1% accurate, 5.5× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right)\\ \mathbf{if}\;x1 \leq -8.5 \cdot 10^{-36}:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq -7.7 \cdot 10^{-137}:\\ \;\;\;\;x1 \cdot -1\\ \mathbf{elif}\;x1 \leq 1.65 \cdot 10^{-89}:\\ \;\;\;\;-6 \cdot x2\\ \mathbf{elif}\;x1 \leq 1.36:\\ \;\;\;\;x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* (* x1 x1) (- (* x1 (- (* 6.0 x1) 3.0)) 3.0))))
   (if (<= x1 -8.5e-36)
     t_0
     (if (<= x1 -7.7e-137)
       (* x1 -1.0)
       (if (<= x1 1.65e-89)
         (* -6.0 x2)
         (if (<= x1 1.36) (* x1 (- (* x1 (+ 9.0 (* -19.0 x1))) 1.0)) t_0))))))

C

double code(double x1, double x2) {
	double t_0 = (x1 * x1) * ((x1 * ((6.0 * x1) - 3.0)) - 3.0);
	double tmp;
	if (x1 <= -8.5e-36) {
		tmp = t_0;
	} else if (x1 <= -7.7e-137) {
		tmp = x1 * -1.0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else if (x1 <= 1.36) {
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    real(8) :: t_0
    real(8) :: tmp
    t_0 = (x1 * x1) * ((x1 * ((6.0d0 * x1) - 3.0d0)) - 3.0d0)
    if (x1 <= (-8.5d-36)) then
        tmp = t_0
    else if (x1 <= (-7.7d-137)) then
        tmp = x1 * (-1.0d0)
    else if (x1 <= 1.65d-89) then
        tmp = (-6.0d0) * x2
    else if (x1 <= 1.36d0) then
        tmp = x1 * ((x1 * (9.0d0 + ((-19.0d0) * x1))) - 1.0d0)
    else
        tmp = t_0
    end if
    code = tmp
end function

Java

public static double code(double x1, double x2) {
	double t_0 = (x1 * x1) * ((x1 * ((6.0 * x1) - 3.0)) - 3.0);
	double tmp;
	if (x1 <= -8.5e-36) {
		tmp = t_0;
	} else if (x1 <= -7.7e-137) {
		tmp = x1 * -1.0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else if (x1 <= 1.36) {
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Python

def code(x1, x2):
	t_0 = (x1 * x1) * ((x1 * ((6.0 * x1) - 3.0)) - 3.0)
	tmp = 0
	if x1 <= -8.5e-36:
		tmp = t_0
	elif x1 <= -7.7e-137:
		tmp = x1 * -1.0
	elif x1 <= 1.65e-89:
		tmp = -6.0 * x2
	elif x1 <= 1.36:
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0)
	else:
		tmp = t_0
	return tmp

Julia

function code(x1, x2)
	t_0 = Float64(Float64(x1 * x1) * Float64(Float64(x1 * Float64(Float64(6.0 * x1) - 3.0)) - 3.0))
	tmp = 0.0
	if (x1 <= -8.5e-36)
		tmp = t_0;
	elseif (x1 <= -7.7e-137)
		tmp = Float64(x1 * -1.0);
	elseif (x1 <= 1.65e-89)
		tmp = Float64(-6.0 * x2);
	elseif (x1 <= 1.36)
		tmp = Float64(x1 * Float64(Float64(x1 * Float64(9.0 + Float64(-19.0 * x1))) - 1.0));
	else
		tmp = t_0;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x1, x2)
	t_0 = (x1 * x1) * ((x1 * ((6.0 * x1) - 3.0)) - 3.0);
	tmp = 0.0;
	if (x1 <= -8.5e-36)
		tmp = t_0;
	elseif (x1 <= -7.7e-137)
		tmp = x1 * -1.0;
	elseif (x1 <= 1.65e-89)
		tmp = -6.0 * x2;
	elseif (x1 <= 1.36)
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0);
	else
		tmp = t_0;
	end
	tmp_2 = tmp;
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(N[(x1 * x1), $MachinePrecision] * N[(N[(x1 * N[(N[(6.0 * x1), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -8.5e-36], t$95$0, If[LessEqual[x1, -7.7e-137], N[(x1 * -1.0), $MachinePrecision], If[LessEqual[x1, 1.65e-89], N[(-6.0 * x2), $MachinePrecision], If[LessEqual[x1, 1.36], N[(x1 * N[(N[(x1 * N[(9.0 + N[(-19.0 * x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision], t$95$0]]]]]

Derivation

1. Split input into 4 regimes

2. if x1 < -8.5000000000000007e-36 or 1.3600000000000001 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + \color{blue}{-1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}}\right) \]

      2. lower-pow.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + \color{blue}{-1} \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right) \]

      3. lower-+.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \color{blue}{\frac{3 + 3 \cdot \frac{1}{x1}}{x1}}\right) \]

      4. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{\color{blue}{x1}}\right) \]

      5. lower-/.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right) \]

   7. Applied rewrites 44.3%

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto {x1}^{2} \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - \color{blue}{3}\right) \]
   9. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{2} \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      2. pow2 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      3. lift-*.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      4. lower--.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      5. lower-*.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      6. lower--.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

      7. lower-*.f64 45.2

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - 3\right) \]

   10. Applied rewrites 45.2%

       \[\leadsto \left(x1 \cdot x1\right) \cdot \left(x1 \cdot \left(6 \cdot x1 - 3\right) - \color{blue}{3}\right) \]

   if -8.5000000000000007e-36 < x1 < -7.7000000000000004e-137

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right) \]

   7. Applied rewrites 14.1%

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot -1 \]
   9. Step-by-step derivation

   10. Applied rewrites 14.0%

       \[\leadsto x1 \cdot -1 \]

   if -7.7000000000000004e-137 < x1 < 1.6499999999999998e-89

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around 0

      \[\leadsto \color{blue}{-6 \cdot x2} \]
   3. Step-by-step derivation

      1. lower-*.f64 26.9

         \[\leadsto -6 \cdot \color{blue}{x2} \]

   4. Applied rewrites 26.9%

      \[\leadsto \color{blue}{-6 \cdot x2} \]

   if 1.6499999999999998e-89 < x1 < 1.3600000000000001

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

      3. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

      4. lower-+.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

      5. lower-*.f64 29.5

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

   7. Applied rewrites 29.5%

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right)} \]
3. Recombined 4 regimes into one program.
4. Add Preprocessing

Alternative 18: 70.8% accurate, 6.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := 6 \cdot \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right)\\ \mathbf{if}\;x1 \leq -8.5 \cdot 10^{-36}:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq -7.7 \cdot 10^{-137}:\\ \;\;\;\;x1 \cdot -1\\ \mathbf{elif}\;x1 \leq 1.65 \cdot 10^{-89}:\\ \;\;\;\;-6 \cdot x2\\ \mathbf{elif}\;x1 \leq 1.36:\\ \;\;\;\;x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* 6.0 (* (* x1 x1) (* x1 x1)))))
   (if (<= x1 -8.5e-36)
     t_0
     (if (<= x1 -7.7e-137)
       (* x1 -1.0)
       (if (<= x1 1.65e-89)
         (* -6.0 x2)
         (if (<= x1 1.36) (* x1 (- (* x1 (+ 9.0 (* -19.0 x1))) 1.0)) t_0))))))

C

double code(double x1, double x2) {
	double t_0 = 6.0 * ((x1 * x1) * (x1 * x1));
	double tmp;
	if (x1 <= -8.5e-36) {
		tmp = t_0;
	} else if (x1 <= -7.7e-137) {
		tmp = x1 * -1.0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else if (x1 <= 1.36) {
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    real(8) :: t_0
    real(8) :: tmp
    t_0 = 6.0d0 * ((x1 * x1) * (x1 * x1))
    if (x1 <= (-8.5d-36)) then
        tmp = t_0
    else if (x1 <= (-7.7d-137)) then
        tmp = x1 * (-1.0d0)
    else if (x1 <= 1.65d-89) then
        tmp = (-6.0d0) * x2
    else if (x1 <= 1.36d0) then
        tmp = x1 * ((x1 * (9.0d0 + ((-19.0d0) * x1))) - 1.0d0)
    else
        tmp = t_0
    end if
    code = tmp
end function

Java

public static double code(double x1, double x2) {
	double t_0 = 6.0 * ((x1 * x1) * (x1 * x1));
	double tmp;
	if (x1 <= -8.5e-36) {
		tmp = t_0;
	} else if (x1 <= -7.7e-137) {
		tmp = x1 * -1.0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else if (x1 <= 1.36) {
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Python

def code(x1, x2):
	t_0 = 6.0 * ((x1 * x1) * (x1 * x1))
	tmp = 0
	if x1 <= -8.5e-36:
		tmp = t_0
	elif x1 <= -7.7e-137:
		tmp = x1 * -1.0
	elif x1 <= 1.65e-89:
		tmp = -6.0 * x2
	elif x1 <= 1.36:
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0)
	else:
		tmp = t_0
	return tmp

Julia

function code(x1, x2)
	t_0 = Float64(6.0 * Float64(Float64(x1 * x1) * Float64(x1 * x1)))
	tmp = 0.0
	if (x1 <= -8.5e-36)
		tmp = t_0;
	elseif (x1 <= -7.7e-137)
		tmp = Float64(x1 * -1.0);
	elseif (x1 <= 1.65e-89)
		tmp = Float64(-6.0 * x2);
	elseif (x1 <= 1.36)
		tmp = Float64(x1 * Float64(Float64(x1 * Float64(9.0 + Float64(-19.0 * x1))) - 1.0));
	else
		tmp = t_0;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x1, x2)
	t_0 = 6.0 * ((x1 * x1) * (x1 * x1));
	tmp = 0.0;
	if (x1 <= -8.5e-36)
		tmp = t_0;
	elseif (x1 <= -7.7e-137)
		tmp = x1 * -1.0;
	elseif (x1 <= 1.65e-89)
		tmp = -6.0 * x2;
	elseif (x1 <= 1.36)
		tmp = x1 * ((x1 * (9.0 + (-19.0 * x1))) - 1.0);
	else
		tmp = t_0;
	end
	tmp_2 = tmp;
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(6.0 * N[(N[(x1 * x1), $MachinePrecision] * N[(x1 * x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -8.5e-36], t$95$0, If[LessEqual[x1, -7.7e-137], N[(x1 * -1.0), $MachinePrecision], If[LessEqual[x1, 1.65e-89], N[(-6.0 * x2), $MachinePrecision], If[LessEqual[x1, 1.36], N[(x1 * N[(N[(x1 * N[(9.0 + N[(-19.0 * x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision], t$95$0]]]]]

Derivation

1. Split input into 4 regimes

2. if x1 < -8.5000000000000007e-36 or 1.3600000000000001 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around inf

      \[\leadsto \color{blue}{6 \cdot {x1}^{4}} \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto 6 \cdot \color{blue}{{x1}^{4}} \]

      2. sqr-pow N/A

         \[\leadsto 6 \cdot \left({x1}^{\left(\frac{4}{2}\right)} \cdot \color{blue}{{x1}^{\left(\frac{4}{2}\right)}}\right) \]

      3. metadata-eval N/A

         \[\leadsto 6 \cdot \left({x1}^{2} \cdot {x1}^{\left(\frac{4}{2}\right)}\right) \]

      4. metadata-eval N/A

         \[\leadsto 6 \cdot \left({x1}^{2} \cdot {x1}^{2}\right) \]

      5. lower-*.f64 N/A

         \[\leadsto 6 \cdot \left({x1}^{2} \cdot \color{blue}{{x1}^{2}}\right) \]

      6. pow2 N/A

         \[\leadsto 6 \cdot \left(\left(x1 \cdot x1\right) \cdot {\color{blue}{x1}}^{2}\right) \]

      7. lift-*.f64 N/A

         \[\leadsto 6 \cdot \left(\left(x1 \cdot x1\right) \cdot {\color{blue}{x1}}^{2}\right) \]

      8. pow2 N/A

         \[\leadsto 6 \cdot \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot \color{blue}{x1}\right)\right) \]

      9. lift-*.f64 44.8

         \[\leadsto 6 \cdot \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot \color{blue}{x1}\right)\right) \]

   4. Applied rewrites 44.8%

      \[\leadsto \color{blue}{6 \cdot \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right)} \]

   if -8.5000000000000007e-36 < x1 < -7.7000000000000004e-137

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right) \]

   7. Applied rewrites 14.1%

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot -1 \]
   9. Step-by-step derivation

   10. Applied rewrites 14.0%

       \[\leadsto x1 \cdot -1 \]

   if -7.7000000000000004e-137 < x1 < 1.6499999999999998e-89

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around 0

      \[\leadsto \color{blue}{-6 \cdot x2} \]
   3. Step-by-step derivation

      1. lower-*.f64 26.9

         \[\leadsto -6 \cdot \color{blue}{x2} \]

   4. Applied rewrites 26.9%

      \[\leadsto \color{blue}{-6 \cdot x2} \]

   if 1.6499999999999998e-89 < x1 < 1.3600000000000001

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

      3. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

      4. lower-+.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

      5. lower-*.f64 29.5

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right) \]

   7. Applied rewrites 29.5%

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + -19 \cdot x1\right) - 1\right)} \]
3. Recombined 4 regimes into one program.
4. Add Preprocessing

Alternative 19: 70.7% accurate, 6.5× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := 6 \cdot \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right)\\ \mathbf{if}\;x1 \leq -8.5 \cdot 10^{-36}:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq -7.7 \cdot 10^{-137}:\\ \;\;\;\;x1 \cdot -1\\ \mathbf{elif}\;x1 \leq 1.65 \cdot 10^{-89}:\\ \;\;\;\;-6 \cdot x2\\ \mathbf{elif}\;x1 \leq 2.25:\\ \;\;\;\;x1 \cdot \left(9 \cdot x1 - 1\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* 6.0 (* (* x1 x1) (* x1 x1)))))
   (if (<= x1 -8.5e-36)
     t_0
     (if (<= x1 -7.7e-137)
       (* x1 -1.0)
       (if (<= x1 1.65e-89)
         (* -6.0 x2)
         (if (<= x1 2.25) (* x1 (- (* 9.0 x1) 1.0)) t_0))))))

C

double code(double x1, double x2) {
	double t_0 = 6.0 * ((x1 * x1) * (x1 * x1));
	double tmp;
	if (x1 <= -8.5e-36) {
		tmp = t_0;
	} else if (x1 <= -7.7e-137) {
		tmp = x1 * -1.0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else if (x1 <= 2.25) {
		tmp = x1 * ((9.0 * x1) - 1.0);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    real(8) :: t_0
    real(8) :: tmp
    t_0 = 6.0d0 * ((x1 * x1) * (x1 * x1))
    if (x1 <= (-8.5d-36)) then
        tmp = t_0
    else if (x1 <= (-7.7d-137)) then
        tmp = x1 * (-1.0d0)
    else if (x1 <= 1.65d-89) then
        tmp = (-6.0d0) * x2
    else if (x1 <= 2.25d0) then
        tmp = x1 * ((9.0d0 * x1) - 1.0d0)
    else
        tmp = t_0
    end if
    code = tmp
end function

Java

public static double code(double x1, double x2) {
	double t_0 = 6.0 * ((x1 * x1) * (x1 * x1));
	double tmp;
	if (x1 <= -8.5e-36) {
		tmp = t_0;
	} else if (x1 <= -7.7e-137) {
		tmp = x1 * -1.0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else if (x1 <= 2.25) {
		tmp = x1 * ((9.0 * x1) - 1.0);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Python

def code(x1, x2):
	t_0 = 6.0 * ((x1 * x1) * (x1 * x1))
	tmp = 0
	if x1 <= -8.5e-36:
		tmp = t_0
	elif x1 <= -7.7e-137:
		tmp = x1 * -1.0
	elif x1 <= 1.65e-89:
		tmp = -6.0 * x2
	elif x1 <= 2.25:
		tmp = x1 * ((9.0 * x1) - 1.0)
	else:
		tmp = t_0
	return tmp

Julia

function code(x1, x2)
	t_0 = Float64(6.0 * Float64(Float64(x1 * x1) * Float64(x1 * x1)))
	tmp = 0.0
	if (x1 <= -8.5e-36)
		tmp = t_0;
	elseif (x1 <= -7.7e-137)
		tmp = Float64(x1 * -1.0);
	elseif (x1 <= 1.65e-89)
		tmp = Float64(-6.0 * x2);
	elseif (x1 <= 2.25)
		tmp = Float64(x1 * Float64(Float64(9.0 * x1) - 1.0));
	else
		tmp = t_0;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x1, x2)
	t_0 = 6.0 * ((x1 * x1) * (x1 * x1));
	tmp = 0.0;
	if (x1 <= -8.5e-36)
		tmp = t_0;
	elseif (x1 <= -7.7e-137)
		tmp = x1 * -1.0;
	elseif (x1 <= 1.65e-89)
		tmp = -6.0 * x2;
	elseif (x1 <= 2.25)
		tmp = x1 * ((9.0 * x1) - 1.0);
	else
		tmp = t_0;
	end
	tmp_2 = tmp;
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(6.0 * N[(N[(x1 * x1), $MachinePrecision] * N[(x1 * x1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -8.5e-36], t$95$0, If[LessEqual[x1, -7.7e-137], N[(x1 * -1.0), $MachinePrecision], If[LessEqual[x1, 1.65e-89], N[(-6.0 * x2), $MachinePrecision], If[LessEqual[x1, 2.25], N[(x1 * N[(N[(9.0 * x1), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision], t$95$0]]]]]

Derivation

1. Split input into 4 regimes

2. if x1 < -8.5000000000000007e-36 or 2.25 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around inf

      \[\leadsto \color{blue}{6 \cdot {x1}^{4}} \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto 6 \cdot \color{blue}{{x1}^{4}} \]

      2. sqr-pow N/A

         \[\leadsto 6 \cdot \left({x1}^{\left(\frac{4}{2}\right)} \cdot \color{blue}{{x1}^{\left(\frac{4}{2}\right)}}\right) \]

      3. metadata-eval N/A

         \[\leadsto 6 \cdot \left({x1}^{2} \cdot {x1}^{\left(\frac{4}{2}\right)}\right) \]

      4. metadata-eval N/A

         \[\leadsto 6 \cdot \left({x1}^{2} \cdot {x1}^{2}\right) \]

      5. lower-*.f64 N/A

         \[\leadsto 6 \cdot \left({x1}^{2} \cdot \color{blue}{{x1}^{2}}\right) \]

      6. pow2 N/A

         \[\leadsto 6 \cdot \left(\left(x1 \cdot x1\right) \cdot {\color{blue}{x1}}^{2}\right) \]

      7. lift-*.f64 N/A

         \[\leadsto 6 \cdot \left(\left(x1 \cdot x1\right) \cdot {\color{blue}{x1}}^{2}\right) \]

      8. pow2 N/A

         \[\leadsto 6 \cdot \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot \color{blue}{x1}\right)\right) \]

      9. lift-*.f64 44.8

         \[\leadsto 6 \cdot \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot \color{blue}{x1}\right)\right) \]

   4. Applied rewrites 44.8%

      \[\leadsto \color{blue}{6 \cdot \left(\left(x1 \cdot x1\right) \cdot \left(x1 \cdot x1\right)\right)} \]

   if -8.5000000000000007e-36 < x1 < -7.7000000000000004e-137

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right) \]

   7. Applied rewrites 14.1%

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot -1 \]
   9. Step-by-step derivation

   10. Applied rewrites 14.0%

       \[\leadsto x1 \cdot -1 \]

   if -7.7000000000000004e-137 < x1 < 1.6499999999999998e-89

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around 0

      \[\leadsto \color{blue}{-6 \cdot x2} \]
   3. Step-by-step derivation

      1. lower-*.f64 26.9

         \[\leadsto -6 \cdot \color{blue}{x2} \]

   4. Applied rewrites 26.9%

      \[\leadsto \color{blue}{-6 \cdot x2} \]

   if 1.6499999999999998e-89 < x1 < 2.25

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(9 \cdot x1 - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(9 \cdot x1 - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(9 \cdot x1 - 1\right) \]

      3. lower-*.f64 38.4

         \[\leadsto x1 \cdot \left(9 \cdot x1 - 1\right) \]

   7. Applied rewrites 38.4%

      \[\leadsto x1 \cdot \color{blue}{\left(9 \cdot x1 - 1\right)} \]
3. Recombined 4 regimes into one program.
4. Add Preprocessing

Alternative 20: 56.8% accurate, 8.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x1 \leq -8.5 \cdot 10^{-36}:\\ \;\;\;\;\left(x1 \cdot x1\right) \cdot \left(-3 \cdot x1 - 3\right)\\ \mathbf{elif}\;x1 \leq -7.7 \cdot 10^{-137}:\\ \;\;\;\;x1 \cdot -1\\ \mathbf{elif}\;x1 \leq 1.65 \cdot 10^{-89}:\\ \;\;\;\;-6 \cdot x2\\ \mathbf{else}:\\ \;\;\;\;x1 \cdot \left(9 \cdot x1 - 1\right)\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (if (<= x1 -8.5e-36)
   (* (* x1 x1) (- (* -3.0 x1) 3.0))
   (if (<= x1 -7.7e-137)
     (* x1 -1.0)
     (if (<= x1 1.65e-89) (* -6.0 x2) (* x1 (- (* 9.0 x1) 1.0))))))

C

double code(double x1, double x2) {
	double tmp;
	if (x1 <= -8.5e-36) {
		tmp = (x1 * x1) * ((-3.0 * x1) - 3.0);
	} else if (x1 <= -7.7e-137) {
		tmp = x1 * -1.0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else {
		tmp = x1 * ((9.0 * x1) - 1.0);
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    real(8) :: tmp
    if (x1 <= (-8.5d-36)) then
        tmp = (x1 * x1) * (((-3.0d0) * x1) - 3.0d0)
    else if (x1 <= (-7.7d-137)) then
        tmp = x1 * (-1.0d0)
    else if (x1 <= 1.65d-89) then
        tmp = (-6.0d0) * x2
    else
        tmp = x1 * ((9.0d0 * x1) - 1.0d0)
    end if
    code = tmp
end function

Java

public static double code(double x1, double x2) {
	double tmp;
	if (x1 <= -8.5e-36) {
		tmp = (x1 * x1) * ((-3.0 * x1) - 3.0);
	} else if (x1 <= -7.7e-137) {
		tmp = x1 * -1.0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else {
		tmp = x1 * ((9.0 * x1) - 1.0);
	}
	return tmp;
}

Python

def code(x1, x2):
	tmp = 0
	if x1 <= -8.5e-36:
		tmp = (x1 * x1) * ((-3.0 * x1) - 3.0)
	elif x1 <= -7.7e-137:
		tmp = x1 * -1.0
	elif x1 <= 1.65e-89:
		tmp = -6.0 * x2
	else:
		tmp = x1 * ((9.0 * x1) - 1.0)
	return tmp

Julia

function code(x1, x2)
	tmp = 0.0
	if (x1 <= -8.5e-36)
		tmp = Float64(Float64(x1 * x1) * Float64(Float64(-3.0 * x1) - 3.0));
	elseif (x1 <= -7.7e-137)
		tmp = Float64(x1 * -1.0);
	elseif (x1 <= 1.65e-89)
		tmp = Float64(-6.0 * x2);
	else
		tmp = Float64(x1 * Float64(Float64(9.0 * x1) - 1.0));
	end
	return tmp
end

MATLAB

function tmp_2 = code(x1, x2)
	tmp = 0.0;
	if (x1 <= -8.5e-36)
		tmp = (x1 * x1) * ((-3.0 * x1) - 3.0);
	elseif (x1 <= -7.7e-137)
		tmp = x1 * -1.0;
	elseif (x1 <= 1.65e-89)
		tmp = -6.0 * x2;
	else
		tmp = x1 * ((9.0 * x1) - 1.0);
	end
	tmp_2 = tmp;
end

Wolfram

code[x1_, x2_] := If[LessEqual[x1, -8.5e-36], N[(N[(x1 * x1), $MachinePrecision] * N[(N[(-3.0 * x1), $MachinePrecision] - 3.0), $MachinePrecision]), $MachinePrecision], If[LessEqual[x1, -7.7e-137], N[(x1 * -1.0), $MachinePrecision], If[LessEqual[x1, 1.65e-89], N[(-6.0 * x2), $MachinePrecision], N[(x1 * N[(N[(9.0 * x1), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision]]]]

Derivation

1. Split input into 4 regimes

2. if x1 < -8.5000000000000007e-36

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around inf

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + \color{blue}{-1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}}\right) \]

      2. lower-pow.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + \color{blue}{-1} \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right) \]

      3. lower-+.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \color{blue}{\frac{3 + 3 \cdot \frac{1}{x1}}{x1}}\right) \]

      4. lower-*.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{\color{blue}{x1}}\right) \]

      5. lower-/.f64 N/A

         \[\leadsto {x1}^{4} \cdot \left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right) \]

   7. Applied rewrites 44.3%

      \[\leadsto {x1}^{4} \cdot \color{blue}{\left(6 + -1 \cdot \frac{3 + 3 \cdot \frac{1}{x1}}{x1}\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto {x1}^{2} \cdot \left(-3 \cdot x1 - \color{blue}{3}\right) \]
   9. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto {x1}^{2} \cdot \left(-3 \cdot x1 - 3\right) \]

      2. pow2 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(-3 \cdot x1 - 3\right) \]

      3. lift-*.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(-3 \cdot x1 - 3\right) \]

      4. lower--.f64 N/A

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(-3 \cdot x1 - 3\right) \]

      5. lift-*.f64 18.3

         \[\leadsto \left(x1 \cdot x1\right) \cdot \left(-3 \cdot x1 - 3\right) \]

   10. Applied rewrites 18.3%

       \[\leadsto \left(x1 \cdot x1\right) \cdot \left(-3 \cdot x1 - \color{blue}{3}\right) \]

   if -8.5000000000000007e-36 < x1 < -7.7000000000000004e-137

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right) \]

   7. Applied rewrites 14.1%

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot -1 \]
   9. Step-by-step derivation

   10. Applied rewrites 14.0%

       \[\leadsto x1 \cdot -1 \]

   if -7.7000000000000004e-137 < x1 < 1.6499999999999998e-89

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around 0

      \[\leadsto \color{blue}{-6 \cdot x2} \]
   3. Step-by-step derivation

      1. lower-*.f64 26.9

         \[\leadsto -6 \cdot \color{blue}{x2} \]

   4. Applied rewrites 26.9%

      \[\leadsto \color{blue}{-6 \cdot x2} \]

   if 1.6499999999999998e-89 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(9 \cdot x1 - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(9 \cdot x1 - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(9 \cdot x1 - 1\right) \]

      3. lower-*.f64 38.4

         \[\leadsto x1 \cdot \left(9 \cdot x1 - 1\right) \]

   7. Applied rewrites 38.4%

      \[\leadsto x1 \cdot \color{blue}{\left(9 \cdot x1 - 1\right)} \]
3. Recombined 4 regimes into one program.
4. Add Preprocessing

Alternative 21: 54.3% accurate, 10.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := x1 \cdot \left(9 \cdot x1 - 1\right)\\ \mathbf{if}\;x1 \leq -7.7 \cdot 10^{-137}:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x1 \leq 1.65 \cdot 10^{-89}:\\ \;\;\;\;-6 \cdot x2\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (let* ((t_0 (* x1 (- (* 9.0 x1) 1.0))))
   (if (<= x1 -7.7e-137) t_0 (if (<= x1 1.65e-89) (* -6.0 x2) t_0))))

C

double code(double x1, double x2) {
	double t_0 = x1 * ((9.0 * x1) - 1.0);
	double tmp;
	if (x1 <= -7.7e-137) {
		tmp = t_0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else {
		tmp = t_0;
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    real(8) :: t_0
    real(8) :: tmp
    t_0 = x1 * ((9.0d0 * x1) - 1.0d0)
    if (x1 <= (-7.7d-137)) then
        tmp = t_0
    else if (x1 <= 1.65d-89) then
        tmp = (-6.0d0) * x2
    else
        tmp = t_0
    end if
    code = tmp
end function

Java

public static double code(double x1, double x2) {
	double t_0 = x1 * ((9.0 * x1) - 1.0);
	double tmp;
	if (x1 <= -7.7e-137) {
		tmp = t_0;
	} else if (x1 <= 1.65e-89) {
		tmp = -6.0 * x2;
	} else {
		tmp = t_0;
	}
	return tmp;
}

Python

def code(x1, x2):
	t_0 = x1 * ((9.0 * x1) - 1.0)
	tmp = 0
	if x1 <= -7.7e-137:
		tmp = t_0
	elif x1 <= 1.65e-89:
		tmp = -6.0 * x2
	else:
		tmp = t_0
	return tmp

Julia

function code(x1, x2)
	t_0 = Float64(x1 * Float64(Float64(9.0 * x1) - 1.0))
	tmp = 0.0
	if (x1 <= -7.7e-137)
		tmp = t_0;
	elseif (x1 <= 1.65e-89)
		tmp = Float64(-6.0 * x2);
	else
		tmp = t_0;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x1, x2)
	t_0 = x1 * ((9.0 * x1) - 1.0);
	tmp = 0.0;
	if (x1 <= -7.7e-137)
		tmp = t_0;
	elseif (x1 <= 1.65e-89)
		tmp = -6.0 * x2;
	else
		tmp = t_0;
	end
	tmp_2 = tmp;
end

Wolfram

code[x1_, x2_] := Block[{t$95$0 = N[(x1 * N[(N[(9.0 * x1), $MachinePrecision] - 1.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x1, -7.7e-137], t$95$0, If[LessEqual[x1, 1.65e-89], N[(-6.0 * x2), $MachinePrecision], t$95$0]]]

Derivation

1. Split input into 2 regimes

2. if x1 < -7.7000000000000004e-137 or 1.6499999999999998e-89 < x1

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(9 \cdot x1 - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(9 \cdot x1 - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(9 \cdot x1 - 1\right) \]

      3. lower-*.f64 38.4

         \[\leadsto x1 \cdot \left(9 \cdot x1 - 1\right) \]

   7. Applied rewrites 38.4%

      \[\leadsto x1 \cdot \color{blue}{\left(9 \cdot x1 - 1\right)} \]

   if -7.7000000000000004e-137 < x1 < 1.6499999999999998e-89

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around 0

      \[\leadsto \color{blue}{-6 \cdot x2} \]
   3. Step-by-step derivation

      1. lower-*.f64 26.9

         \[\leadsto -6 \cdot \color{blue}{x2} \]

   4. Applied rewrites 26.9%

      \[\leadsto \color{blue}{-6 \cdot x2} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 22: 32.2% accurate, 15.8× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x2 \leq -1.85 \cdot 10^{-125}:\\ \;\;\;\;-6 \cdot x2\\ \mathbf{elif}\;x2 \leq 1.6 \cdot 10^{-218}:\\ \;\;\;\;x1 \cdot -1\\ \mathbf{else}:\\ \;\;\;\;-6 \cdot x2\\ \end{array} \end{array} \]

FPCore

(FPCore (x1 x2)
 :precision binary64
 (if (<= x2 -1.85e-125)
   (* -6.0 x2)
   (if (<= x2 1.6e-218) (* x1 -1.0) (* -6.0 x2))))

C

double code(double x1, double x2) {
	double tmp;
	if (x2 <= -1.85e-125) {
		tmp = -6.0 * x2;
	} else if (x2 <= 1.6e-218) {
		tmp = x1 * -1.0;
	} else {
		tmp = -6.0 * x2;
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    real(8) :: tmp
    if (x2 <= (-1.85d-125)) then
        tmp = (-6.0d0) * x2
    else if (x2 <= 1.6d-218) then
        tmp = x1 * (-1.0d0)
    else
        tmp = (-6.0d0) * x2
    end if
    code = tmp
end function

Java

public static double code(double x1, double x2) {
	double tmp;
	if (x2 <= -1.85e-125) {
		tmp = -6.0 * x2;
	} else if (x2 <= 1.6e-218) {
		tmp = x1 * -1.0;
	} else {
		tmp = -6.0 * x2;
	}
	return tmp;
}

Python

def code(x1, x2):
	tmp = 0
	if x2 <= -1.85e-125:
		tmp = -6.0 * x2
	elif x2 <= 1.6e-218:
		tmp = x1 * -1.0
	else:
		tmp = -6.0 * x2
	return tmp

Julia

function code(x1, x2)
	tmp = 0.0
	if (x2 <= -1.85e-125)
		tmp = Float64(-6.0 * x2);
	elseif (x2 <= 1.6e-218)
		tmp = Float64(x1 * -1.0);
	else
		tmp = Float64(-6.0 * x2);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x1, x2)
	tmp = 0.0;
	if (x2 <= -1.85e-125)
		tmp = -6.0 * x2;
	elseif (x2 <= 1.6e-218)
		tmp = x1 * -1.0;
	else
		tmp = -6.0 * x2;
	end
	tmp_2 = tmp;
end

Wolfram

code[x1_, x2_] := If[LessEqual[x2, -1.85e-125], N[(-6.0 * x2), $MachinePrecision], If[LessEqual[x2, 1.6e-218], N[(x1 * -1.0), $MachinePrecision], N[(-6.0 * x2), $MachinePrecision]]]

Derivation

1. Split input into 2 regimes

2. if x2 < -1.85e-125 or 1.6000000000000001e-218 < x2

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x1 around 0

      \[\leadsto \color{blue}{-6 \cdot x2} \]
   3. Step-by-step derivation

      1. lower-*.f64 26.9

         \[\leadsto -6 \cdot \color{blue}{x2} \]

   4. Applied rewrites 26.9%

      \[\leadsto \color{blue}{-6 \cdot x2} \]

   if -1.85e-125 < x2 < 1.6000000000000001e-218

   1. Initial program 71.4%

      \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

   2. Taylor expanded in x2 around 0

      \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

   4. Applied rewrites 28.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

   5. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - \color{blue}{1}\right) \]

      2. lower--.f64 N/A

         \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right) \]

   7. Applied rewrites 14.1%

      \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]

   8. Taylor expanded in x1 around 0

      \[\leadsto x1 \cdot -1 \]
   9. Step-by-step derivation

   10. Applied rewrites 14.0%

       \[\leadsto x1 \cdot -1 \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 23: 14.0% accurate, 46.3× speedup

Math

\[\begin{array}{l} \\ x1 \cdot -1 \end{array} \]

FPCore

(FPCore (x1 x2) :precision binary64 (* x1 -1.0))

C

double code(double x1, double x2) {
	return x1 * -1.0;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    code = x1 * (-1.0d0)
end function

Java

public static double code(double x1, double x2) {
	return x1 * -1.0;
}

Python

def code(x1, x2):
	return x1 * -1.0

Julia

function code(x1, x2)
	return Float64(x1 * -1.0)
end

MATLAB

function tmp = code(x1, x2)
	tmp = x1 * -1.0;
end

Wolfram

code[x1_, x2_] := N[(x1 * -1.0), $MachinePrecision]

Derivation

1. Initial program 71.4%

   \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

2. Taylor expanded in x2 around 0

   \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

4. Applied rewrites 28.7%

   \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

5. Taylor expanded in x1 around 0

   \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - \color{blue}{1}\right) \]

   2. lower--.f64 N/A

      \[\leadsto x1 \cdot \left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right) \]

7. Applied rewrites 14.1%

   \[\leadsto x1 \cdot \color{blue}{\left(x1 \cdot \left(9 + x1 \cdot \left(-6 \cdot x1 - 19\right)\right) - 1\right)} \]

8. Taylor expanded in x1 around 0

   \[\leadsto x1 \cdot -1 \]
9. Step-by-step derivation

10. Applied rewrites 14.0%

    \[\leadsto x1 \cdot -1 \]
11. Add Preprocessing

Alternative 24: 4.7% accurate, 46.3× speedup

Math

\[\begin{array}{l} \\ -17 \cdot x1 \end{array} \]

FPCore

(FPCore (x1 x2) :precision binary64 (* -17.0 x1))

C

double code(double x1, double x2) {
	return -17.0 * x1;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x1, x2)
use fmin_fmax_functions
    real(8), intent (in) :: x1
    real(8), intent (in) :: x2
    code = (-17.0d0) * x1
end function

Java

public static double code(double x1, double x2) {
	return -17.0 * x1;
}

Python

def code(x1, x2):
	return -17.0 * x1

Julia

function code(x1, x2)
	return Float64(-17.0 * x1)
end

MATLAB

function tmp = code(x1, x2)
	tmp = -17.0 * x1;
end

Wolfram

code[x1_, x2_] := N[(-17.0 * x1), $MachinePrecision]

Derivation

1. Initial program 71.4%

   \[x1 + \left(\left(\left(\left(\left(\left(\left(2 \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \cdot \left(\frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 3\right) + \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1} - 6\right)\right) \cdot \left(x1 \cdot x1 + 1\right) + \left(\left(3 \cdot x1\right) \cdot x1\right) \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 + 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) + \left(x1 \cdot x1\right) \cdot x1\right) + x1\right) + 3 \cdot \frac{\left(\left(3 \cdot x1\right) \cdot x1 - 2 \cdot x2\right) - x1}{x1 \cdot x1 + 1}\right) \]

2. Taylor expanded in x2 around 0

   \[\leadsto \color{blue}{2 \cdot x1 + \left(3 \cdot \frac{{x1}^{2} \cdot \left(3 \cdot {x1}^{2} - x1\right)}{1 + {x1}^{2}} + \left(3 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} + \left(\left(1 + {x1}^{2}\right) \cdot \left(2 \cdot \frac{x1 \cdot \left(\left(3 \cdot \frac{{x1}^{2}}{1 + {x1}^{2}} - \left(3 + \frac{x1}{1 + {x1}^{2}}\right)\right) \cdot \left(3 \cdot {x1}^{2} - x1\right)\right)}{1 + {x1}^{2}} + {x1}^{2} \cdot \left(4 \cdot \frac{3 \cdot {x1}^{2} - x1}{1 + {x1}^{2}} - 6\right)\right) + {x1}^{3}\right)\right)\right)} \]

4. Applied rewrites 28.7%

   \[\leadsto \color{blue}{\mathsf{fma}\left(2, x1, \mathsf{fma}\left(3, \frac{\left(x1 \cdot x1\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)}{1 + x1 \cdot x1}, \mathsf{fma}\left(3, \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1}, \mathsf{fma}\left(1 + x1 \cdot x1, \mathsf{fma}\left(2, \frac{x1 \cdot \left(\left(3 \cdot \frac{x1 \cdot x1}{1 + x1 \cdot x1} - \left(3 + \frac{x1}{1 + x1 \cdot x1}\right)\right) \cdot \left(3 \cdot \left(x1 \cdot x1\right) - x1\right)\right)}{1 + x1 \cdot x1}, \left(x1 \cdot x1\right) \cdot \left(4 \cdot \frac{3 \cdot \left(x1 \cdot x1\right) - x1}{1 + x1 \cdot x1} - 6\right)\right), \left(x1 \cdot x1\right) \cdot x1\right)\right)\right)\right)} \]

5. Taylor expanded in x1 around inf

   \[\leadsto {x1}^{4} \cdot \color{blue}{\left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - 3 \cdot \frac{1}{x1}\right)} \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto {x1}^{4} \cdot \left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - \color{blue}{3 \cdot \frac{1}{x1}}\right) \]

   2. lower-pow.f64 N/A

      \[\leadsto {x1}^{4} \cdot \left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - \color{blue}{3} \cdot \frac{1}{x1}\right) \]

   3. lower--.f64 N/A

      \[\leadsto {x1}^{4} \cdot \left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{{x1}^{2}}\right) - 3 \cdot \color{blue}{\frac{1}{x1}}\right) \]

7. Applied rewrites 44.6%

   \[\leadsto {x1}^{4} \cdot \color{blue}{\left(\left(6 + -1 \cdot \frac{3 + 17 \cdot \frac{1}{x1}}{x1 \cdot x1}\right) - 3 \cdot \frac{1}{x1}\right)} \]

8. Taylor expanded in x1 around 0

   \[\leadsto -17 \cdot x1 \]
9. Step-by-step derivation

   1. lower-*.f64 4.7

      \[\leadsto -17 \cdot x1 \]

10. Applied rewrites 4.7%

    \[\leadsto -17 \cdot x1 \]
11. Add Preprocessing

Reproduce

herbie shell --seed 2025127 
(FPCore (x1 x2)
  :name "Rosa's FloatVsDoubleBenchmark"
  :precision binary64
  (+ x1 (+ (+ (+ (+ (* (+ (* (* (* 2.0 x1) (/ (- (+ (* (* 3.0 x1) x1) (* 2.0 x2)) x1) (+ (* x1 x1) 1.0))) (- (/ (- (+ (* (* 3.0 x1) x1) (* 2.0 x2)) x1) (+ (* x1 x1) 1.0)) 3.0)) (* (* x1 x1) (- (* 4.0 (/ (- (+ (* (* 3.0 x1) x1) (* 2.0 x2)) x1) (+ (* x1 x1) 1.0))) 6.0))) (+ (* x1 x1) 1.0)) (* (* (* 3.0 x1) x1) (/ (- (+ (* (* 3.0 x1) x1) (* 2.0 x2)) x1) (+ (* x1 x1) 1.0)))) (* (* x1 x1) x1)) x1) (* 3.0 (/ (- (- (* (* 3.0 x1) x1) (* 2.0 x2)) x1) (+ (* x1 x1) 1.0))))))