Data.Colour.RGBSpace.HSL:hsl from colour-2.3.3, D

Percentage Accurate: 99.5% → 99.7%

Time: 3.1s

Alternatives: 14

Speedup: 1.9×

• 20.7% of points produce a very large (infinite) output. You may want to add a precondition.

Specification

Math

\[\begin{array}{l} \\ x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (+ x (* (* (- y x) 6.0) (- (/ 2.0 3.0) z))))

C

double code(double x, double y, double z) {
	return x + (((y - x) * 6.0) * ((2.0 / 3.0) - z));
}

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(x, y, z)
use fmin_fmax_functions
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = x + (((y - x) * 6.0d0) * ((2.0d0 / 3.0d0) - z))
end function

Java

public static double code(double x, double y, double z) {
	return x + (((y - x) * 6.0) * ((2.0 / 3.0) - z));
}

Python

def code(x, y, z):
	return x + (((y - x) * 6.0) * ((2.0 / 3.0) - z))

Julia

function code(x, y, z)
	return Float64(x + Float64(Float64(Float64(y - x) * 6.0) * Float64(Float64(2.0 / 3.0) - z)))
end

MATLAB

function tmp = code(x, y, z)
	tmp = x + (((y - x) * 6.0) * ((2.0 / 3.0) - z));
end

Wolfram

code[x_, y_, z_] := N[(x + N[(N[(N[(y - x), $MachinePrecision] * 6.0), $MachinePrecision] * N[(N[(2.0 / 3.0), $MachinePrecision] - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Initial Program: 99.5% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (+ x (* (* (- y x) 6.0) (- (/ 2.0 3.0) z))))

C

double code(double x, double y, double z) {
	return x + (((y - x) * 6.0) * ((2.0 / 3.0) - z));
}

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(x, y, z)
use fmin_fmax_functions
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = x + (((y - x) * 6.0d0) * ((2.0d0 / 3.0d0) - z))
end function

Java

public static double code(double x, double y, double z) {
	return x + (((y - x) * 6.0) * ((2.0 / 3.0) - z));
}

Python

def code(x, y, z):
	return x + (((y - x) * 6.0) * ((2.0 / 3.0) - z))

Julia

function code(x, y, z)
	return Float64(x + Float64(Float64(Float64(y - x) * 6.0) * Float64(Float64(2.0 / 3.0) - z)))
end

MATLAB

function tmp = code(x, y, z)
	tmp = x + (((y - x) * 6.0) * ((2.0 / 3.0) - z));
end

Wolfram

code[x_, y_, z_] := N[(x + N[(N[(N[(y - x), $MachinePrecision] * 6.0), $MachinePrecision] * N[(N[(2.0 / 3.0), $MachinePrecision] - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Alternative 1: 99.7% accurate, 1.1× speedup

Math

\[\begin{array}{l} \\ \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (+ (+ x (* (* z (- y x)) -6.0)) (* 4.0 (- y x))))

C

double code(double x, double y, double z) {
	return (x + ((z * (y - x)) * -6.0)) + (4.0 * (y - x));
}

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(x, y, z)
use fmin_fmax_functions
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = (x + ((z * (y - x)) * (-6.0d0))) + (4.0d0 * (y - x))
end function

Java

public static double code(double x, double y, double z) {
	return (x + ((z * (y - x)) * -6.0)) + (4.0 * (y - x));
}

Python

def code(x, y, z):
	return (x + ((z * (y - x)) * -6.0)) + (4.0 * (y - x))

Julia

function code(x, y, z)
	return Float64(Float64(x + Float64(Float64(z * Float64(y - x)) * -6.0)) + Float64(4.0 * Float64(y - x)))
end

MATLAB

function tmp = code(x, y, z)
	tmp = (x + ((z * (y - x)) * -6.0)) + (4.0 * (y - x));
end

Wolfram

code[x_, y_, z_] := N[(N[(x + N[(N[(z * N[(y - x), $MachinePrecision]), $MachinePrecision] * -6.0), $MachinePrecision]), $MachinePrecision] + N[(4.0 * N[(y - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 99.5%

   \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
3. Step-by-step derivation

   1. +-commutative N/A

      \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

   2. associate-*r* N/A

      \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

   3. distribute-rgt-out N/A

      \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

   4. lower-fma.f64 N/A

      \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

   5. lift--.f64 N/A

      \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

   6. lower-fma.f64 99.7

      \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

4. Applied rewrites 99.7%

   \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]
5. Step-by-step derivation

   1. lift--.f64 N/A

      \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(\color{blue}{-6}, z, 4\right), x\right) \]

   2. lift-fma.f64 N/A

      \[\leadsto \mathsf{fma}\left(y - x, -6 \cdot z + \color{blue}{4}, x\right) \]

   3. lift-fma.f64 N/A

      \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + \color{blue}{x} \]

   4. +-commutative N/A

      \[\leadsto x + \color{blue}{\left(y - x\right) \cdot \left(-6 \cdot z + 4\right)} \]

   5. distribute-rgt-in N/A

      \[\leadsto x + \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + \color{blue}{4 \cdot \left(y - x\right)}\right) \]

   6. associate-*r* N/A

      \[\leadsto x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + \color{blue}{4} \cdot \left(y - x\right)\right) \]

   7. associate-+r+ N/A

      \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

   8. lower-+.f64 N/A

      \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

   9. lower-+.f64 N/A

      \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4} \cdot \left(y - x\right) \]

   10. *-commutative N/A

       \[\leadsto \left(x + -6 \cdot \left(\left(y - x\right) \cdot z\right)\right) + 4 \cdot \left(y - x\right) \]

   11. *-commutative N/A

       \[\leadsto \left(x + \left(\left(y - x\right) \cdot z\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

   12. lower-*.f64 N/A

       \[\leadsto \left(x + \left(\left(y - x\right) \cdot z\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

   13. *-commutative N/A

       \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

   14. lower-*.f64 N/A

       \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

   15. lift--.f64 N/A

       \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

   16. lower-*.f64 N/A

       \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \color{blue}{\left(y - x\right)} \]

   17. lift--.f64 99.7

       \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - \color{blue}{x}\right) \]

6. Applied rewrites 99.7%

   \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + \color{blue}{4 \cdot \left(y - x\right)} \]
7. Add Preprocessing

Alternative 2: 74.9% accurate, 0.3× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{2}{3} - z\\ \mathbf{if}\;t\_0 \leq -2 \cdot 10^{+40}:\\ \;\;\;\;\left(z \cdot x\right) \cdot 6\\ \mathbf{elif}\;t\_0 \leq 0.6:\\ \;\;\;\;\mathsf{fma}\left(-6, z, 4\right) \cdot y\\ \mathbf{elif}\;t\_0 \leq 1:\\ \;\;\;\;\mathsf{fma}\left(4, y - x, x\right)\\ \mathbf{elif}\;t\_0 \leq 5 \cdot 10^{+85}:\\ \;\;\;\;\left(z \cdot 6\right) \cdot x\\ \mathbf{else}:\\ \;\;\;\;\left(-6 \cdot z\right) \cdot y\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (let* ((t_0 (- (/ 2.0 3.0) z)))
   (if (<= t_0 -2e+40)
     (* (* z x) 6.0)
     (if (<= t_0 0.6)
       (* (fma -6.0 z 4.0) y)
       (if (<= t_0 1.0)
         (fma 4.0 (- y x) x)
         (if (<= t_0 5e+85) (* (* z 6.0) x) (* (* -6.0 z) y)))))))

C

double code(double x, double y, double z) {
	double t_0 = (2.0 / 3.0) - z;
	double tmp;
	if (t_0 <= -2e+40) {
		tmp = (z * x) * 6.0;
	} else if (t_0 <= 0.6) {
		tmp = fma(-6.0, z, 4.0) * y;
	} else if (t_0 <= 1.0) {
		tmp = fma(4.0, (y - x), x);
	} else if (t_0 <= 5e+85) {
		tmp = (z * 6.0) * x;
	} else {
		tmp = (-6.0 * z) * y;
	}
	return tmp;
}

Julia

function code(x, y, z)
	t_0 = Float64(Float64(2.0 / 3.0) - z)
	tmp = 0.0
	if (t_0 <= -2e+40)
		tmp = Float64(Float64(z * x) * 6.0);
	elseif (t_0 <= 0.6)
		tmp = Float64(fma(-6.0, z, 4.0) * y);
	elseif (t_0 <= 1.0)
		tmp = fma(4.0, Float64(y - x), x);
	elseif (t_0 <= 5e+85)
		tmp = Float64(Float64(z * 6.0) * x);
	else
		tmp = Float64(Float64(-6.0 * z) * y);
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := Block[{t$95$0 = N[(N[(2.0 / 3.0), $MachinePrecision] - z), $MachinePrecision]}, If[LessEqual[t$95$0, -2e+40], N[(N[(z * x), $MachinePrecision] * 6.0), $MachinePrecision], If[LessEqual[t$95$0, 0.6], N[(N[(-6.0 * z + 4.0), $MachinePrecision] * y), $MachinePrecision], If[LessEqual[t$95$0, 1.0], N[(4.0 * N[(y - x), $MachinePrecision] + x), $MachinePrecision], If[LessEqual[t$95$0, 5e+85], N[(N[(z * 6.0), $MachinePrecision] * x), $MachinePrecision], N[(N[(-6.0 * z), $MachinePrecision] * y), $MachinePrecision]]]]]]

Derivation

1. Split input into 5 regimes

2. if (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < -2.00000000000000006e40

   1. Initial program 99.8%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 99.8

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]

   5. Taylor expanded in x around inf

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

      1. *-commutative N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      2. lower-*.f64 N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      3. *-commutative N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      4. lower-*.f64 54.6

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

   7. Applied rewrites 54.6%

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

   if -2.00000000000000006e40 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < 0.599999999999999978

   1. Initial program 99.5%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

      2. associate-*r* N/A

         \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

      3. distribute-rgt-out N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

      4. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

      5. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

      6. lower-fma.f64 99.6

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

   4. Applied rewrites 99.6%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]

   5. Taylor expanded in x around 0

      \[\leadsto y \cdot \color{blue}{\left(4 + -6 \cdot z\right)} \]
   6. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      2. lower-*.f64 N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      3. +-commutative N/A

         \[\leadsto \left(-6 \cdot z + 4\right) \cdot y \]

      4. lift-fma.f64 52.2

         \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot y \]

   7. Applied rewrites 52.2%

      \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot \color{blue}{y} \]

   if 0.599999999999999978 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < 1

   1. Initial program 99.3%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

      2. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

      3. lift--.f64 97.9

         \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

   4. Applied rewrites 97.9%

      \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]

   if 1 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < 5.0000000000000001e85

   1. Initial program 99.6%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

      2. associate-*r* N/A

         \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

      3. distribute-rgt-out N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

      4. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

      5. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

      6. lower-fma.f64 99.7

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

   4. Applied rewrites 99.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]
   5. Step-by-step derivation

      1. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(\color{blue}{-6}, z, 4\right), x\right) \]

      2. lift-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, -6 \cdot z + \color{blue}{4}, x\right) \]

      3. lift-fma.f64 N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + \color{blue}{x} \]

      4. +-commutative N/A

         \[\leadsto x + \color{blue}{\left(y - x\right) \cdot \left(-6 \cdot z + 4\right)} \]

      5. distribute-rgt-in N/A

         \[\leadsto x + \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + \color{blue}{4 \cdot \left(y - x\right)}\right) \]

      6. associate-*r* N/A

         \[\leadsto x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + \color{blue}{4} \cdot \left(y - x\right)\right) \]

      7. associate-+r+ N/A

         \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

      8. lower-+.f64 N/A

         \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

      9. lower-+.f64 N/A

         \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4} \cdot \left(y - x\right) \]

      10. *-commutative N/A

          \[\leadsto \left(x + -6 \cdot \left(\left(y - x\right) \cdot z\right)\right) + 4 \cdot \left(y - x\right) \]

      11. *-commutative N/A

          \[\leadsto \left(x + \left(\left(y - x\right) \cdot z\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      12. lower-*.f64 N/A

          \[\leadsto \left(x + \left(\left(y - x\right) \cdot z\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      13. *-commutative N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      14. lower-*.f64 N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      15. lift--.f64 N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      16. lower-*.f64 N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \color{blue}{\left(y - x\right)} \]

      17. lift--.f64 99.6

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - \color{blue}{x}\right) \]

   6. Applied rewrites 99.6%

      \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

   7. Taylor expanded in x around inf

      \[\leadsto x \cdot \color{blue}{\left(6 \cdot z - 3\right)} \]
   8. Step-by-step derivation

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lower--.f64 N/A

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

      4. *-commutative N/A

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

      5. lower-*.f64 50.1

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

   9. Applied rewrites 50.1%

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

   10. Taylor expanded in z around inf

       \[\leadsto \left(6 \cdot z\right) \cdot x \]
   11. Step-by-step derivation

       1. *-commutative N/A

          \[\leadsto \left(z \cdot 6\right) \cdot x \]

       2. lift-*.f64 45.7

          \[\leadsto \left(z \cdot 6\right) \cdot x \]

   12. Applied rewrites 45.7%

       \[\leadsto \left(z \cdot 6\right) \cdot x \]

   if 5.0000000000000001e85 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z)

   1. Initial program 99.8%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

      2. associate-*r* N/A

         \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

      3. distribute-rgt-out N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

      4. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

      5. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

      6. lower-fma.f64 99.7

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

   4. Applied rewrites 99.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]

   5. Taylor expanded in x around 0

      \[\leadsto y \cdot \color{blue}{\left(4 + -6 \cdot z\right)} \]
   6. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      2. lower-*.f64 N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      3. +-commutative N/A

         \[\leadsto \left(-6 \cdot z + 4\right) \cdot y \]

      4. lift-fma.f64 51.1

         \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot y \]

   7. Applied rewrites 51.1%

      \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot \color{blue}{y} \]

   8. Taylor expanded in z around inf

      \[\leadsto \left(-6 \cdot z\right) \cdot y \]
   9. Step-by-step derivation

      1. lower-*.f64 51.1

         \[\leadsto \left(-6 \cdot z\right) \cdot y \]

   10. Applied rewrites 51.1%

       \[\leadsto \left(-6 \cdot z\right) \cdot y \]
3. Recombined 5 regimes into one program.
4. Add Preprocessing

Alternative 3: 74.6% accurate, 0.3× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{2}{3} - z\\ \mathbf{if}\;t\_0 \leq -2 \cdot 10^{+40}:\\ \;\;\;\;\left(z \cdot x\right) \cdot 6\\ \mathbf{elif}\;t\_0 \leq -100000:\\ \;\;\;\;\left(y \cdot z\right) \cdot -6\\ \mathbf{elif}\;t\_0 \leq 1:\\ \;\;\;\;\mathsf{fma}\left(4, y - x, x\right)\\ \mathbf{elif}\;t\_0 \leq 5 \cdot 10^{+85}:\\ \;\;\;\;\left(z \cdot 6\right) \cdot x\\ \mathbf{else}:\\ \;\;\;\;\left(-6 \cdot z\right) \cdot y\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (let* ((t_0 (- (/ 2.0 3.0) z)))
   (if (<= t_0 -2e+40)
     (* (* z x) 6.0)
     (if (<= t_0 -100000.0)
       (* (* y z) -6.0)
       (if (<= t_0 1.0)
         (fma 4.0 (- y x) x)
         (if (<= t_0 5e+85) (* (* z 6.0) x) (* (* -6.0 z) y)))))))

C

double code(double x, double y, double z) {
	double t_0 = (2.0 / 3.0) - z;
	double tmp;
	if (t_0 <= -2e+40) {
		tmp = (z * x) * 6.0;
	} else if (t_0 <= -100000.0) {
		tmp = (y * z) * -6.0;
	} else if (t_0 <= 1.0) {
		tmp = fma(4.0, (y - x), x);
	} else if (t_0 <= 5e+85) {
		tmp = (z * 6.0) * x;
	} else {
		tmp = (-6.0 * z) * y;
	}
	return tmp;
}

Julia

function code(x, y, z)
	t_0 = Float64(Float64(2.0 / 3.0) - z)
	tmp = 0.0
	if (t_0 <= -2e+40)
		tmp = Float64(Float64(z * x) * 6.0);
	elseif (t_0 <= -100000.0)
		tmp = Float64(Float64(y * z) * -6.0);
	elseif (t_0 <= 1.0)
		tmp = fma(4.0, Float64(y - x), x);
	elseif (t_0 <= 5e+85)
		tmp = Float64(Float64(z * 6.0) * x);
	else
		tmp = Float64(Float64(-6.0 * z) * y);
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := Block[{t$95$0 = N[(N[(2.0 / 3.0), $MachinePrecision] - z), $MachinePrecision]}, If[LessEqual[t$95$0, -2e+40], N[(N[(z * x), $MachinePrecision] * 6.0), $MachinePrecision], If[LessEqual[t$95$0, -100000.0], N[(N[(y * z), $MachinePrecision] * -6.0), $MachinePrecision], If[LessEqual[t$95$0, 1.0], N[(4.0 * N[(y - x), $MachinePrecision] + x), $MachinePrecision], If[LessEqual[t$95$0, 5e+85], N[(N[(z * 6.0), $MachinePrecision] * x), $MachinePrecision], N[(N[(-6.0 * z), $MachinePrecision] * y), $MachinePrecision]]]]]]

Derivation

1. Split input into 5 regimes

2. if (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < -2.00000000000000006e40

   1. Initial program 99.8%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 99.8

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]

   5. Taylor expanded in x around inf

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

      1. *-commutative N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      2. lower-*.f64 N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      3. *-commutative N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      4. lower-*.f64 54.6

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

   7. Applied rewrites 54.6%

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

   if -2.00000000000000006e40 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < -1e5

   1. Initial program 99.6%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 92.5

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 92.5%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]

   5. Taylor expanded in x around 0

      \[\leadsto \left(y \cdot z\right) \cdot -6 \]
   6. Step-by-step derivation

   7. Applied rewrites 49.7%

      \[\leadsto \left(y \cdot z\right) \cdot -6 \]

   if -1e5 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < 1

   1. Initial program 99.3%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

      2. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

      3. lift--.f64 97.2

         \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

   4. Applied rewrites 97.2%

      \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]

   if 1 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < 5.0000000000000001e85

   1. Initial program 99.6%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

      2. associate-*r* N/A

         \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

      3. distribute-rgt-out N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

      4. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

      5. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

      6. lower-fma.f64 99.7

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

   4. Applied rewrites 99.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]
   5. Step-by-step derivation

      1. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(\color{blue}{-6}, z, 4\right), x\right) \]

      2. lift-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, -6 \cdot z + \color{blue}{4}, x\right) \]

      3. lift-fma.f64 N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + \color{blue}{x} \]

      4. +-commutative N/A

         \[\leadsto x + \color{blue}{\left(y - x\right) \cdot \left(-6 \cdot z + 4\right)} \]

      5. distribute-rgt-in N/A

         \[\leadsto x + \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + \color{blue}{4 \cdot \left(y - x\right)}\right) \]

      6. associate-*r* N/A

         \[\leadsto x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + \color{blue}{4} \cdot \left(y - x\right)\right) \]

      7. associate-+r+ N/A

         \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

      8. lower-+.f64 N/A

         \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

      9. lower-+.f64 N/A

         \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4} \cdot \left(y - x\right) \]

      10. *-commutative N/A

          \[\leadsto \left(x + -6 \cdot \left(\left(y - x\right) \cdot z\right)\right) + 4 \cdot \left(y - x\right) \]

      11. *-commutative N/A

          \[\leadsto \left(x + \left(\left(y - x\right) \cdot z\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      12. lower-*.f64 N/A

          \[\leadsto \left(x + \left(\left(y - x\right) \cdot z\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      13. *-commutative N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      14. lower-*.f64 N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      15. lift--.f64 N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      16. lower-*.f64 N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \color{blue}{\left(y - x\right)} \]

      17. lift--.f64 99.6

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - \color{blue}{x}\right) \]

   6. Applied rewrites 99.6%

      \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

   7. Taylor expanded in x around inf

      \[\leadsto x \cdot \color{blue}{\left(6 \cdot z - 3\right)} \]
   8. Step-by-step derivation

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lower--.f64 N/A

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

      4. *-commutative N/A

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

      5. lower-*.f64 50.1

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

   9. Applied rewrites 50.1%

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

   10. Taylor expanded in z around inf

       \[\leadsto \left(6 \cdot z\right) \cdot x \]
   11. Step-by-step derivation

       1. *-commutative N/A

          \[\leadsto \left(z \cdot 6\right) \cdot x \]

       2. lift-*.f64 45.7

          \[\leadsto \left(z \cdot 6\right) \cdot x \]

   12. Applied rewrites 45.7%

       \[\leadsto \left(z \cdot 6\right) \cdot x \]

   if 5.0000000000000001e85 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z)

   1. Initial program 99.8%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

      2. associate-*r* N/A

         \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

      3. distribute-rgt-out N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

      4. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

      5. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

      6. lower-fma.f64 99.7

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

   4. Applied rewrites 99.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]

   5. Taylor expanded in x around 0

      \[\leadsto y \cdot \color{blue}{\left(4 + -6 \cdot z\right)} \]
   6. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      2. lower-*.f64 N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      3. +-commutative N/A

         \[\leadsto \left(-6 \cdot z + 4\right) \cdot y \]

      4. lift-fma.f64 51.1

         \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot y \]

   7. Applied rewrites 51.1%

      \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot \color{blue}{y} \]

   8. Taylor expanded in z around inf

      \[\leadsto \left(-6 \cdot z\right) \cdot y \]
   9. Step-by-step derivation

      1. lower-*.f64 51.1

         \[\leadsto \left(-6 \cdot z\right) \cdot y \]

   10. Applied rewrites 51.1%

       \[\leadsto \left(-6 \cdot z\right) \cdot y \]
3. Recombined 5 regimes into one program.
4. Add Preprocessing

Alternative 4: 74.6% accurate, 0.3× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(-6 \cdot z\right) \cdot y\\ t_1 := \frac{2}{3} - z\\ \mathbf{if}\;t\_1 \leq -2 \cdot 10^{+40}:\\ \;\;\;\;\left(z \cdot x\right) \cdot 6\\ \mathbf{elif}\;t\_1 \leq -100000:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;t\_1 \leq 1:\\ \;\;\;\;\mathsf{fma}\left(4, y - x, x\right)\\ \mathbf{elif}\;t\_1 \leq 5 \cdot 10^{+85}:\\ \;\;\;\;\left(z \cdot 6\right) \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (let* ((t_0 (* (* -6.0 z) y)) (t_1 (- (/ 2.0 3.0) z)))
   (if (<= t_1 -2e+40)
     (* (* z x) 6.0)
     (if (<= t_1 -100000.0)
       t_0
       (if (<= t_1 1.0)
         (fma 4.0 (- y x) x)
         (if (<= t_1 5e+85) (* (* z 6.0) x) t_0))))))

C

double code(double x, double y, double z) {
	double t_0 = (-6.0 * z) * y;
	double t_1 = (2.0 / 3.0) - z;
	double tmp;
	if (t_1 <= -2e+40) {
		tmp = (z * x) * 6.0;
	} else if (t_1 <= -100000.0) {
		tmp = t_0;
	} else if (t_1 <= 1.0) {
		tmp = fma(4.0, (y - x), x);
	} else if (t_1 <= 5e+85) {
		tmp = (z * 6.0) * x;
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x, y, z)
	t_0 = Float64(Float64(-6.0 * z) * y)
	t_1 = Float64(Float64(2.0 / 3.0) - z)
	tmp = 0.0
	if (t_1 <= -2e+40)
		tmp = Float64(Float64(z * x) * 6.0);
	elseif (t_1 <= -100000.0)
		tmp = t_0;
	elseif (t_1 <= 1.0)
		tmp = fma(4.0, Float64(y - x), x);
	elseif (t_1 <= 5e+85)
		tmp = Float64(Float64(z * 6.0) * x);
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := Block[{t$95$0 = N[(N[(-6.0 * z), $MachinePrecision] * y), $MachinePrecision]}, Block[{t$95$1 = N[(N[(2.0 / 3.0), $MachinePrecision] - z), $MachinePrecision]}, If[LessEqual[t$95$1, -2e+40], N[(N[(z * x), $MachinePrecision] * 6.0), $MachinePrecision], If[LessEqual[t$95$1, -100000.0], t$95$0, If[LessEqual[t$95$1, 1.0], N[(4.0 * N[(y - x), $MachinePrecision] + x), $MachinePrecision], If[LessEqual[t$95$1, 5e+85], N[(N[(z * 6.0), $MachinePrecision] * x), $MachinePrecision], t$95$0]]]]]]

Derivation

1. Split input into 4 regimes

2. if (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < -2.00000000000000006e40

   1. Initial program 99.8%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 99.8

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]

   5. Taylor expanded in x around inf

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

      1. *-commutative N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      2. lower-*.f64 N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      3. *-commutative N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      4. lower-*.f64 54.6

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

   7. Applied rewrites 54.6%

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

   if -2.00000000000000006e40 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < -1e5 or 5.0000000000000001e85 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z)

   1. Initial program 99.8%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

      2. associate-*r* N/A

         \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

      3. distribute-rgt-out N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

      4. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

      5. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

      6. lower-fma.f64 99.7

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

   4. Applied rewrites 99.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]

   5. Taylor expanded in x around 0

      \[\leadsto y \cdot \color{blue}{\left(4 + -6 \cdot z\right)} \]
   6. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      2. lower-*.f64 N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      3. +-commutative N/A

         \[\leadsto \left(-6 \cdot z + 4\right) \cdot y \]

      4. lift-fma.f64 51.4

         \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot y \]

   7. Applied rewrites 51.4%

      \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot \color{blue}{y} \]

   8. Taylor expanded in z around inf

      \[\leadsto \left(-6 \cdot z\right) \cdot y \]
   9. Step-by-step derivation

      1. lower-*.f64 50.9

         \[\leadsto \left(-6 \cdot z\right) \cdot y \]

   10. Applied rewrites 50.9%

       \[\leadsto \left(-6 \cdot z\right) \cdot y \]

   if -1e5 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < 1

   1. Initial program 99.3%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

      2. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

      3. lift--.f64 97.2

         \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

   4. Applied rewrites 97.2%

      \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]

   if 1 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < 5.0000000000000001e85

   1. Initial program 99.6%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

      2. associate-*r* N/A

         \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

      3. distribute-rgt-out N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

      4. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

      5. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

      6. lower-fma.f64 99.7

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

   4. Applied rewrites 99.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]
   5. Step-by-step derivation

      1. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(\color{blue}{-6}, z, 4\right), x\right) \]

      2. lift-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, -6 \cdot z + \color{blue}{4}, x\right) \]

      3. lift-fma.f64 N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + \color{blue}{x} \]

      4. +-commutative N/A

         \[\leadsto x + \color{blue}{\left(y - x\right) \cdot \left(-6 \cdot z + 4\right)} \]

      5. distribute-rgt-in N/A

         \[\leadsto x + \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + \color{blue}{4 \cdot \left(y - x\right)}\right) \]

      6. associate-*r* N/A

         \[\leadsto x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + \color{blue}{4} \cdot \left(y - x\right)\right) \]

      7. associate-+r+ N/A

         \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

      8. lower-+.f64 N/A

         \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

      9. lower-+.f64 N/A

         \[\leadsto \left(x + -6 \cdot \left(z \cdot \left(y - x\right)\right)\right) + \color{blue}{4} \cdot \left(y - x\right) \]

      10. *-commutative N/A

          \[\leadsto \left(x + -6 \cdot \left(\left(y - x\right) \cdot z\right)\right) + 4 \cdot \left(y - x\right) \]

      11. *-commutative N/A

          \[\leadsto \left(x + \left(\left(y - x\right) \cdot z\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      12. lower-*.f64 N/A

          \[\leadsto \left(x + \left(\left(y - x\right) \cdot z\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      13. *-commutative N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      14. lower-*.f64 N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      15. lift--.f64 N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - x\right) \]

      16. lower-*.f64 N/A

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \color{blue}{\left(y - x\right)} \]

      17. lift--.f64 99.6

          \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + 4 \cdot \left(y - \color{blue}{x}\right) \]

   6. Applied rewrites 99.6%

      \[\leadsto \left(x + \left(z \cdot \left(y - x\right)\right) \cdot -6\right) + \color{blue}{4 \cdot \left(y - x\right)} \]

   7. Taylor expanded in x around inf

      \[\leadsto x \cdot \color{blue}{\left(6 \cdot z - 3\right)} \]
   8. Step-by-step derivation

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lower--.f64 N/A

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

      4. *-commutative N/A

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

      5. lower-*.f64 50.1

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

   9. Applied rewrites 50.1%

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

   10. Taylor expanded in z around inf

       \[\leadsto \left(6 \cdot z\right) \cdot x \]
   11. Step-by-step derivation

       1. *-commutative N/A

          \[\leadsto \left(z \cdot 6\right) \cdot x \]

       2. lift-*.f64 45.7

          \[\leadsto \left(z \cdot 6\right) \cdot x \]

   12. Applied rewrites 45.7%

       \[\leadsto \left(z \cdot 6\right) \cdot x \]
3. Recombined 4 regimes into one program.
4. Add Preprocessing

Alternative 5: 75.6% accurate, 0.6× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{2}{3} - z\\ \mathbf{if}\;t\_0 \leq -100000:\\ \;\;\;\;\left(z \cdot x\right) \cdot 6\\ \mathbf{elif}\;t\_0 \leq 1:\\ \;\;\;\;\mathsf{fma}\left(4, y - x, x\right)\\ \mathbf{else}:\\ \;\;\;\;\left(6 \cdot x\right) \cdot z\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (let* ((t_0 (- (/ 2.0 3.0) z)))
   (if (<= t_0 -100000.0)
     (* (* z x) 6.0)
     (if (<= t_0 1.0) (fma 4.0 (- y x) x) (* (* 6.0 x) z)))))

C

double code(double x, double y, double z) {
	double t_0 = (2.0 / 3.0) - z;
	double tmp;
	if (t_0 <= -100000.0) {
		tmp = (z * x) * 6.0;
	} else if (t_0 <= 1.0) {
		tmp = fma(4.0, (y - x), x);
	} else {
		tmp = (6.0 * x) * z;
	}
	return tmp;
}

Julia

function code(x, y, z)
	t_0 = Float64(Float64(2.0 / 3.0) - z)
	tmp = 0.0
	if (t_0 <= -100000.0)
		tmp = Float64(Float64(z * x) * 6.0);
	elseif (t_0 <= 1.0)
		tmp = fma(4.0, Float64(y - x), x);
	else
		tmp = Float64(Float64(6.0 * x) * z);
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := Block[{t$95$0 = N[(N[(2.0 / 3.0), $MachinePrecision] - z), $MachinePrecision]}, If[LessEqual[t$95$0, -100000.0], N[(N[(z * x), $MachinePrecision] * 6.0), $MachinePrecision], If[LessEqual[t$95$0, 1.0], N[(4.0 * N[(y - x), $MachinePrecision] + x), $MachinePrecision], N[(N[(6.0 * x), $MachinePrecision] * z), $MachinePrecision]]]]

Derivation

1. Split input into 3 regimes

2. if (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < -1e5

   1. Initial program 99.7%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 98.8

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 98.8%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]

   5. Taylor expanded in x around inf

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

      1. *-commutative N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      2. lower-*.f64 N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      3. *-commutative N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      4. lower-*.f64 53.2

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

   7. Applied rewrites 53.2%

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

   if -1e5 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < 1

   1. Initial program 99.3%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

      2. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

      3. lift--.f64 97.2

         \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

   4. Applied rewrites 97.2%

      \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]

   if 1 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z)

   1. Initial program 99.7%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 97.2

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 97.2%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]

   5. Taylor expanded in x around inf

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

      1. *-commutative N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      2. lower-*.f64 N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      3. *-commutative N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      4. lower-*.f64 54.0

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

   7. Applied rewrites 54.0%

      \[\leadsto \left(z \cdot x\right) \cdot \color{blue}{6} \]
   8. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      2. *-commutative N/A

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

      3. lift-*.f64 N/A

         \[\leadsto 6 \cdot \left(z \cdot x\right) \]

      4. *-commutative N/A

         \[\leadsto 6 \cdot \left(x \cdot z\right) \]

      5. associate-*r* N/A

         \[\leadsto \left(6 \cdot x\right) \cdot z \]

      6. lower-*.f64 N/A

         \[\leadsto \left(6 \cdot x\right) \cdot z \]

      7. lower-*.f64 54.0

         \[\leadsto \left(6 \cdot x\right) \cdot z \]

   9. Applied rewrites 54.0%

      \[\leadsto \left(6 \cdot x\right) \cdot z \]
3. Recombined 3 regimes into one program.
4. Add Preprocessing

Alternative 6: 75.6% accurate, 0.6× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{2}{3} - z\\ t_1 := \left(6 \cdot x\right) \cdot z\\ \mathbf{if}\;t\_0 \leq -100000:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;t\_0 \leq 1:\\ \;\;\;\;\mathsf{fma}\left(4, y - x, x\right)\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (let* ((t_0 (- (/ 2.0 3.0) z)) (t_1 (* (* 6.0 x) z)))
   (if (<= t_0 -100000.0) t_1 (if (<= t_0 1.0) (fma 4.0 (- y x) x) t_1))))

C

double code(double x, double y, double z) {
	double t_0 = (2.0 / 3.0) - z;
	double t_1 = (6.0 * x) * z;
	double tmp;
	if (t_0 <= -100000.0) {
		tmp = t_1;
	} else if (t_0 <= 1.0) {
		tmp = fma(4.0, (y - x), x);
	} else {
		tmp = t_1;
	}
	return tmp;
}

Julia

function code(x, y, z)
	t_0 = Float64(Float64(2.0 / 3.0) - z)
	t_1 = Float64(Float64(6.0 * x) * z)
	tmp = 0.0
	if (t_0 <= -100000.0)
		tmp = t_1;
	elseif (t_0 <= 1.0)
		tmp = fma(4.0, Float64(y - x), x);
	else
		tmp = t_1;
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := Block[{t$95$0 = N[(N[(2.0 / 3.0), $MachinePrecision] - z), $MachinePrecision]}, Block[{t$95$1 = N[(N[(6.0 * x), $MachinePrecision] * z), $MachinePrecision]}, If[LessEqual[t$95$0, -100000.0], t$95$1, If[LessEqual[t$95$0, 1.0], N[(4.0 * N[(y - x), $MachinePrecision] + x), $MachinePrecision], t$95$1]]]]

Derivation

1. Split input into 2 regimes

2. if (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < -1e5 or 1 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z)

   1. Initial program 99.7%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 98.0

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 98.0%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]

   5. Taylor expanded in x around inf

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

      1. *-commutative N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      2. lower-*.f64 N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      3. *-commutative N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      4. lower-*.f64 53.6

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

   7. Applied rewrites 53.6%

      \[\leadsto \left(z \cdot x\right) \cdot \color{blue}{6} \]
   8. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      2. *-commutative N/A

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

      3. lift-*.f64 N/A

         \[\leadsto 6 \cdot \left(z \cdot x\right) \]

      4. *-commutative N/A

         \[\leadsto 6 \cdot \left(x \cdot z\right) \]

      5. associate-*r* N/A

         \[\leadsto \left(6 \cdot x\right) \cdot z \]

      6. lower-*.f64 N/A

         \[\leadsto \left(6 \cdot x\right) \cdot z \]

      7. lower-*.f64 53.6

         \[\leadsto \left(6 \cdot x\right) \cdot z \]

   9. Applied rewrites 53.6%

      \[\leadsto \left(6 \cdot x\right) \cdot z \]

   if -1e5 < (-.f64 (/.f64 #s(literal 2 binary64) #s(literal 3 binary64)) z) < 1

   1. Initial program 99.3%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

      2. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

      3. lift--.f64 97.2

         \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

   4. Applied rewrites 97.2%

      \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 7: 74.6% accurate, 0.9× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(-6 \cdot z\right) \cdot y\\ \mathbf{if}\;z \leq -1.95 \cdot 10^{+86}:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;z \leq -36:\\ \;\;\;\;\left(6 \cdot x\right) \cdot z\\ \mathbf{elif}\;z \leq 0.66:\\ \;\;\;\;\mathsf{fma}\left(4, y - x, x\right)\\ \mathbf{elif}\;z \leq 1.9 \cdot 10^{+39}:\\ \;\;\;\;t\_0\\ \mathbf{else}:\\ \;\;\;\;\left(z \cdot x\right) \cdot 6\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (let* ((t_0 (* (* -6.0 z) y)))
   (if (<= z -1.95e+86)
     t_0
     (if (<= z -36.0)
       (* (* 6.0 x) z)
       (if (<= z 0.66)
         (fma 4.0 (- y x) x)
         (if (<= z 1.9e+39) t_0 (* (* z x) 6.0)))))))

C

double code(double x, double y, double z) {
	double t_0 = (-6.0 * z) * y;
	double tmp;
	if (z <= -1.95e+86) {
		tmp = t_0;
	} else if (z <= -36.0) {
		tmp = (6.0 * x) * z;
	} else if (z <= 0.66) {
		tmp = fma(4.0, (y - x), x);
	} else if (z <= 1.9e+39) {
		tmp = t_0;
	} else {
		tmp = (z * x) * 6.0;
	}
	return tmp;
}

Julia

function code(x, y, z)
	t_0 = Float64(Float64(-6.0 * z) * y)
	tmp = 0.0
	if (z <= -1.95e+86)
		tmp = t_0;
	elseif (z <= -36.0)
		tmp = Float64(Float64(6.0 * x) * z);
	elseif (z <= 0.66)
		tmp = fma(4.0, Float64(y - x), x);
	elseif (z <= 1.9e+39)
		tmp = t_0;
	else
		tmp = Float64(Float64(z * x) * 6.0);
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := Block[{t$95$0 = N[(N[(-6.0 * z), $MachinePrecision] * y), $MachinePrecision]}, If[LessEqual[z, -1.95e+86], t$95$0, If[LessEqual[z, -36.0], N[(N[(6.0 * x), $MachinePrecision] * z), $MachinePrecision], If[LessEqual[z, 0.66], N[(4.0 * N[(y - x), $MachinePrecision] + x), $MachinePrecision], If[LessEqual[z, 1.9e+39], t$95$0, N[(N[(z * x), $MachinePrecision] * 6.0), $MachinePrecision]]]]]]

Derivation

1. Split input into 4 regimes

2. if z < -1.9500000000000001e86 or 0.660000000000000031 < z < 1.8999999999999999e39

   1. Initial program 99.8%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

      2. associate-*r* N/A

         \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

      3. distribute-rgt-out N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

      4. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

      5. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

      6. lower-fma.f64 99.7

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

   4. Applied rewrites 99.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]

   5. Taylor expanded in x around 0

      \[\leadsto y \cdot \color{blue}{\left(4 + -6 \cdot z\right)} \]
   6. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      2. lower-*.f64 N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      3. +-commutative N/A

         \[\leadsto \left(-6 \cdot z + 4\right) \cdot y \]

      4. lift-fma.f64 51.3

         \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot y \]

   7. Applied rewrites 51.3%

      \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot \color{blue}{y} \]

   8. Taylor expanded in z around inf

      \[\leadsto \left(-6 \cdot z\right) \cdot y \]
   9. Step-by-step derivation

      1. lower-*.f64 50.2

         \[\leadsto \left(-6 \cdot z\right) \cdot y \]

   10. Applied rewrites 50.2%

       \[\leadsto \left(-6 \cdot z\right) \cdot y \]

   if -1.9500000000000001e86 < z < -36

   1. Initial program 99.6%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 92.6

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 92.6%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]

   5. Taylor expanded in x around inf

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

      1. *-commutative N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      2. lower-*.f64 N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      3. *-commutative N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      4. lower-*.f64 46.5

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

   7. Applied rewrites 46.5%

      \[\leadsto \left(z \cdot x\right) \cdot \color{blue}{6} \]
   8. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      2. *-commutative N/A

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

      3. lift-*.f64 N/A

         \[\leadsto 6 \cdot \left(z \cdot x\right) \]

      4. *-commutative N/A

         \[\leadsto 6 \cdot \left(x \cdot z\right) \]

      5. associate-*r* N/A

         \[\leadsto \left(6 \cdot x\right) \cdot z \]

      6. lower-*.f64 N/A

         \[\leadsto \left(6 \cdot x\right) \cdot z \]

      7. lower-*.f64 46.4

         \[\leadsto \left(6 \cdot x\right) \cdot z \]

   9. Applied rewrites 46.4%

      \[\leadsto \left(6 \cdot x\right) \cdot z \]

   if -36 < z < 0.660000000000000031

   1. Initial program 99.3%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

      2. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

      3. lift--.f64 97.5

         \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

   4. Applied rewrites 97.5%

      \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]

   if 1.8999999999999999e39 < z

   1. Initial program 99.8%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 99.8

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]

   5. Taylor expanded in x around inf

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

      1. *-commutative N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      2. lower-*.f64 N/A

         \[\leadsto \left(x \cdot z\right) \cdot 6 \]

      3. *-commutative N/A

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

      4. lower-*.f64 54.4

         \[\leadsto \left(z \cdot x\right) \cdot 6 \]

   7. Applied rewrites 54.4%

      \[\leadsto \left(z \cdot x\right) \cdot \color{blue}{6} \]
3. Recombined 4 regimes into one program.
4. Add Preprocessing

Alternative 8: 97.7% accurate, 1.2× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -0.55:\\ \;\;\;\;\left(y - x\right) \cdot \left(-6 \cdot z\right)\\ \mathbf{elif}\;z \leq 0.65:\\ \;\;\;\;\mathsf{fma}\left(4, y - x, x\right)\\ \mathbf{else}:\\ \;\;\;\;\left(\left(y - x\right) \cdot z\right) \cdot -6\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= z -0.55)
   (* (- y x) (* -6.0 z))
   (if (<= z 0.65) (fma 4.0 (- y x) x) (* (* (- y x) z) -6.0))))

C

double code(double x, double y, double z) {
	double tmp;
	if (z <= -0.55) {
		tmp = (y - x) * (-6.0 * z);
	} else if (z <= 0.65) {
		tmp = fma(4.0, (y - x), x);
	} else {
		tmp = ((y - x) * z) * -6.0;
	}
	return tmp;
}

Julia

function code(x, y, z)
	tmp = 0.0
	if (z <= -0.55)
		tmp = Float64(Float64(y - x) * Float64(-6.0 * z));
	elseif (z <= 0.65)
		tmp = fma(4.0, Float64(y - x), x);
	else
		tmp = Float64(Float64(Float64(y - x) * z) * -6.0);
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := If[LessEqual[z, -0.55], N[(N[(y - x), $MachinePrecision] * N[(-6.0 * z), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 0.65], N[(4.0 * N[(y - x), $MachinePrecision] + x), $MachinePrecision], N[(N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision] * -6.0), $MachinePrecision]]]

Derivation

1. Split input into 3 regimes

2. if z < -0.55000000000000004

   1. Initial program 99.7%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 97.2

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 97.2%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot \color{blue}{-6} \]

      2. lift--.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      3. lift-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. associate-*l* N/A

         \[\leadsto \left(y - x\right) \cdot \color{blue}{\left(z \cdot -6\right)} \]

      5. *-commutative N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot \color{blue}{z}\right) \]

      6. lower-*.f64 N/A

         \[\leadsto \left(y - x\right) \cdot \color{blue}{\left(-6 \cdot z\right)} \]

      7. lift--.f64 N/A

         \[\leadsto \left(y - x\right) \cdot \left(\color{blue}{-6} \cdot z\right) \]

      8. lower-*.f64 97.1

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot \color{blue}{z}\right) \]

   6. Applied rewrites 97.1%

      \[\leadsto \left(y - x\right) \cdot \color{blue}{\left(-6 \cdot z\right)} \]

   if -0.55000000000000004 < z < 0.650000000000000022

   1. Initial program 99.3%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

      2. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

      3. lift--.f64 97.9

         \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

   4. Applied rewrites 97.9%

      \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]

   if 0.650000000000000022 < z

   1. Initial program 99.7%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 97.9

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 97.9%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]
3. Recombined 3 regimes into one program.
4. Add Preprocessing

Alternative 9: 97.7% accurate, 1.2× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(\left(y - x\right) \cdot z\right) \cdot -6\\ \mathbf{if}\;z \leq -0.55:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;z \leq 0.65:\\ \;\;\;\;\mathsf{fma}\left(4, y - x, x\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (let* ((t_0 (* (* (- y x) z) -6.0)))
   (if (<= z -0.55) t_0 (if (<= z 0.65) (fma 4.0 (- y x) x) t_0))))

C

double code(double x, double y, double z) {
	double t_0 = ((y - x) * z) * -6.0;
	double tmp;
	if (z <= -0.55) {
		tmp = t_0;
	} else if (z <= 0.65) {
		tmp = fma(4.0, (y - x), x);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x, y, z)
	t_0 = Float64(Float64(Float64(y - x) * z) * -6.0)
	tmp = 0.0
	if (z <= -0.55)
		tmp = t_0;
	elseif (z <= 0.65)
		tmp = fma(4.0, Float64(y - x), x);
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := Block[{t$95$0 = N[(N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision] * -6.0), $MachinePrecision]}, If[LessEqual[z, -0.55], t$95$0, If[LessEqual[z, 0.65], N[(4.0 * N[(y - x), $MachinePrecision] + x), $MachinePrecision], t$95$0]]]

Derivation

1. Split input into 2 regimes

2. if z < -0.55000000000000004 or 0.650000000000000022 < z

   1. Initial program 99.7%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around inf

      \[\leadsto \color{blue}{-6 \cdot \left(z \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(z \cdot \left(y - x\right)\right) \cdot \color{blue}{-6} \]

      3. *-commutative N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      4. lower-*.f64 N/A

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

      5. lift--.f64 97.5

         \[\leadsto \left(\left(y - x\right) \cdot z\right) \cdot -6 \]

   4. Applied rewrites 97.5%

      \[\leadsto \color{blue}{\left(\left(y - x\right) \cdot z\right) \cdot -6} \]

   if -0.55000000000000004 < z < 0.650000000000000022

   1. Initial program 99.3%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

      2. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

      3. lift--.f64 97.9

         \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

   4. Applied rewrites 97.9%

      \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 10: 75.2% accurate, 1.2× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(-x\right) \cdot \mathsf{fma}\left(-6, z, 3\right)\\ \mathbf{if}\;x \leq -5500000:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;x \leq 9.5 \cdot 10^{-51}:\\ \;\;\;\;\mathsf{fma}\left(-6, z, 4\right) \cdot y\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (let* ((t_0 (* (- x) (fma -6.0 z 3.0))))
   (if (<= x -5500000.0) t_0 (if (<= x 9.5e-51) (* (fma -6.0 z 4.0) y) t_0))))

C

double code(double x, double y, double z) {
	double t_0 = -x * fma(-6.0, z, 3.0);
	double tmp;
	if (x <= -5500000.0) {
		tmp = t_0;
	} else if (x <= 9.5e-51) {
		tmp = fma(-6.0, z, 4.0) * y;
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x, y, z)
	t_0 = Float64(Float64(-x) * fma(-6.0, z, 3.0))
	tmp = 0.0
	if (x <= -5500000.0)
		tmp = t_0;
	elseif (x <= 9.5e-51)
		tmp = Float64(fma(-6.0, z, 4.0) * y);
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := Block[{t$95$0 = N[((-x) * N[(-6.0 * z + 3.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x, -5500000.0], t$95$0, If[LessEqual[x, 9.5e-51], N[(N[(-6.0 * z + 4.0), $MachinePrecision] * y), $MachinePrecision], t$95$0]]]

Derivation

1. Split input into 2 regimes

2. if x < -5.5e6 or 9.4999999999999998e-51 < x

   1. Initial program 99.5%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

      2. associate-*r* N/A

         \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

      3. distribute-rgt-out N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

      4. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

      5. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

      6. lower-fma.f64 99.8

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]

   5. Taylor expanded in x around -inf

      \[\leadsto -1 \cdot \color{blue}{\left(x \cdot \left(3 + -6 \cdot z\right)\right)} \]
   6. Step-by-step derivation

      1. associate-*r* N/A

         \[\leadsto \left(-1 \cdot x\right) \cdot \left(3 + \color{blue}{-6 \cdot z}\right) \]

      2. lower-*.f64 N/A

         \[\leadsto \left(-1 \cdot x\right) \cdot \left(3 + \color{blue}{-6 \cdot z}\right) \]

      3. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(x\right)\right) \cdot \left(3 + \color{blue}{-6} \cdot z\right) \]

      4. lower-neg.f64 N/A

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

      5. +-commutative N/A

         \[\leadsto \left(-x\right) \cdot \left(-6 \cdot z + 3\right) \]

      6. lower-fma.f64 75.4

         \[\leadsto \left(-x\right) \cdot \mathsf{fma}\left(-6, z, 3\right) \]

   7. Applied rewrites 75.4%

      \[\leadsto \left(-x\right) \cdot \color{blue}{\mathsf{fma}\left(-6, z, 3\right)} \]

   if -5.5e6 < x < 9.4999999999999998e-51

   1. Initial program 99.5%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

      2. associate-*r* N/A

         \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

      3. distribute-rgt-out N/A

         \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

      4. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

      5. lift--.f64 N/A

         \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

      6. lower-fma.f64 99.7

         \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

   4. Applied rewrites 99.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]

   5. Taylor expanded in x around 0

      \[\leadsto y \cdot \color{blue}{\left(4 + -6 \cdot z\right)} \]
   6. Step-by-step derivation

      1. *-commutative N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      2. lower-*.f64 N/A

         \[\leadsto \left(4 + -6 \cdot z\right) \cdot y \]

      3. +-commutative N/A

         \[\leadsto \left(-6 \cdot z + 4\right) \cdot y \]

      4. lift-fma.f64 75.0

         \[\leadsto \mathsf{fma}\left(-6, z, 4\right) \cdot y \]

   7. Applied rewrites 75.0%

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

Alternative 11: 38.0% accurate, 1.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -4.5 \cdot 10^{+54}:\\ \;\;\;\;4 \cdot y\\ \mathbf{elif}\;y \leq 8.4 \cdot 10^{-55}:\\ \;\;\;\;-3 \cdot x\\ \mathbf{else}:\\ \;\;\;\;4 \cdot y\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= y -4.5e+54) (* 4.0 y) (if (<= y 8.4e-55) (* -3.0 x) (* 4.0 y))))

C

double code(double x, double y, double z) {
	double tmp;
	if (y <= -4.5e+54) {
		tmp = 4.0 * y;
	} else if (y <= 8.4e-55) {
		tmp = -3.0 * x;
	} else {
		tmp = 4.0 * y;
	}
	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(x, y, z)
use fmin_fmax_functions
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (y <= (-4.5d+54)) then
        tmp = 4.0d0 * y
    else if (y <= 8.4d-55) then
        tmp = (-3.0d0) * x
    else
        tmp = 4.0d0 * y
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z) {
	double tmp;
	if (y <= -4.5e+54) {
		tmp = 4.0 * y;
	} else if (y <= 8.4e-55) {
		tmp = -3.0 * x;
	} else {
		tmp = 4.0 * y;
	}
	return tmp;
}

Python

def code(x, y, z):
	tmp = 0
	if y <= -4.5e+54:
		tmp = 4.0 * y
	elif y <= 8.4e-55:
		tmp = -3.0 * x
	else:
		tmp = 4.0 * y
	return tmp

Julia

function code(x, y, z)
	tmp = 0.0
	if (y <= -4.5e+54)
		tmp = Float64(4.0 * y);
	elseif (y <= 8.4e-55)
		tmp = Float64(-3.0 * x);
	else
		tmp = Float64(4.0 * y);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (y <= -4.5e+54)
		tmp = 4.0 * y;
	elseif (y <= 8.4e-55)
		tmp = -3.0 * x;
	else
		tmp = 4.0 * y;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_] := If[LessEqual[y, -4.5e+54], N[(4.0 * y), $MachinePrecision], If[LessEqual[y, 8.4e-55], N[(-3.0 * x), $MachinePrecision], N[(4.0 * y), $MachinePrecision]]]

Derivation

1. Split input into 2 regimes

2. if y < -4.49999999999999984e54 or 8.4000000000000006e-55 < y

   1. Initial program 99.6%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

      2. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

      3. lift--.f64 50.7

         \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

   4. Applied rewrites 50.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]

   5. Taylor expanded in x around 0

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

      1. lower-*.f64 37.8

         \[\leadsto 4 \cdot y \]

   7. Applied rewrites 37.8%

      \[\leadsto 4 \cdot \color{blue}{y} \]

   if -4.49999999999999984e54 < y < 8.4000000000000006e-55

   1. Initial program 99.5%

      \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

   2. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
   3. Step-by-step derivation

      1. +-commutative N/A

         \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

      2. lower-fma.f64 N/A

         \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

      3. lift--.f64 51.0

         \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

   4. Applied rewrites 51.0%

      \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]

   5. Taylor expanded in x around inf

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

      1. lower-*.f64 38.1

         \[\leadsto -3 \cdot x \]

   7. Applied rewrites 38.1%

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

Alternative 12: 99.7% accurate, 1.9× speedup

Math

\[\begin{array}{l} \\ \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right) \end{array} \]

FPCore

(FPCore (x y z) :precision binary64 (fma (- y x) (fma -6.0 z 4.0) x))

C

double code(double x, double y, double z) {
	return fma((y - x), fma(-6.0, z, 4.0), x);
}

Julia

function code(x, y, z)
	return fma(Float64(y - x), fma(-6.0, z, 4.0), x)
end

Wolfram

code[x_, y_, z_] := N[(N[(y - x), $MachinePrecision] * N[(-6.0 * z + 4.0), $MachinePrecision] + x), $MachinePrecision]

Derivation

1. Initial program 99.5%

   \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \color{blue}{x + \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right)} \]
3. Step-by-step derivation

   1. +-commutative N/A

      \[\leadsto \left(-6 \cdot \left(z \cdot \left(y - x\right)\right) + 4 \cdot \left(y - x\right)\right) + \color{blue}{x} \]

   2. associate-*r* N/A

      \[\leadsto \left(\left(-6 \cdot z\right) \cdot \left(y - x\right) + 4 \cdot \left(y - x\right)\right) + x \]

   3. distribute-rgt-out N/A

      \[\leadsto \left(y - x\right) \cdot \left(-6 \cdot z + 4\right) + x \]

   4. lower-fma.f64 N/A

      \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z + 4}, x\right) \]

   5. lift--.f64 N/A

      \[\leadsto \mathsf{fma}\left(y - x, \color{blue}{-6 \cdot z} + 4, x\right) \]

   6. lower-fma.f64 99.7

      \[\leadsto \mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, \color{blue}{z}, 4\right), x\right) \]

4. Applied rewrites 99.7%

   \[\leadsto \color{blue}{\mathsf{fma}\left(y - x, \mathsf{fma}\left(-6, z, 4\right), x\right)} \]
5. Add Preprocessing

Alternative 13: 50.9% accurate, 3.1× speedup

Math

\[\begin{array}{l} \\ \mathsf{fma}\left(4, y - x, x\right) \end{array} \]

FPCore

(FPCore (x y z) :precision binary64 (fma 4.0 (- y x) x))

C

double code(double x, double y, double z) {
	return fma(4.0, (y - x), x);
}

Julia

function code(x, y, z)
	return fma(4.0, Float64(y - x), x)
end

Wolfram

code[x_, y_, z_] := N[(4.0 * N[(y - x), $MachinePrecision] + x), $MachinePrecision]

Derivation

1. Initial program 99.5%

   \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
3. Step-by-step derivation

   1. +-commutative N/A

      \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

   2. lower-fma.f64 N/A

      \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

   3. lift--.f64 50.9

      \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

4. Applied rewrites 50.9%

   \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]
5. Add Preprocessing

Alternative 14: 26.4% accurate, 5.2× speedup

Math

\[\begin{array}{l} \\ -3 \cdot x \end{array} \]

FPCore

(FPCore (x y z) :precision binary64 (* -3.0 x))

C

double code(double x, double y, double z) {
	return -3.0 * x;
}

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(x, y, z)
use fmin_fmax_functions
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = (-3.0d0) * x
end function

Java

public static double code(double x, double y, double z) {
	return -3.0 * x;
}

Python

def code(x, y, z):
	return -3.0 * x

Julia

function code(x, y, z)
	return Float64(-3.0 * x)
end

MATLAB

function tmp = code(x, y, z)
	tmp = -3.0 * x;
end

Wolfram

code[x_, y_, z_] := N[(-3.0 * x), $MachinePrecision]

Derivation

1. Initial program 99.5%

   \[x + \left(\left(y - x\right) \cdot 6\right) \cdot \left(\frac{2}{3} - z\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \color{blue}{x + 4 \cdot \left(y - x\right)} \]
3. Step-by-step derivation

   1. +-commutative N/A

      \[\leadsto 4 \cdot \left(y - x\right) + \color{blue}{x} \]

   2. lower-fma.f64 N/A

      \[\leadsto \mathsf{fma}\left(4, \color{blue}{y - x}, x\right) \]

   3. lift--.f64 50.9

      \[\leadsto \mathsf{fma}\left(4, y - \color{blue}{x}, x\right) \]

4. Applied rewrites 50.9%

   \[\leadsto \color{blue}{\mathsf{fma}\left(4, y - x, x\right)} \]

5. Taylor expanded in x around inf

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

   1. lower-*.f64 26.4

      \[\leadsto -3 \cdot x \]

7. Applied rewrites 26.4%

   \[\leadsto -3 \cdot \color{blue}{x} \]
8. Add Preprocessing

Reproduce

herbie shell --seed 2025095 
(FPCore (x y z)
  :name "Data.Colour.RGBSpace.HSL:hsl from colour-2.3.3, D"
  :precision binary64
  (+ x (* (* (- y x) 6.0) (- (/ 2.0 3.0) z))))