Linear.Quaternion:$csin from linear-1.19.1.3

Percentage Accurate: 100.0% → 100.0%

Time: 3.6s

Alternatives: 8

Speedup: 1.0×

• 49.3% of points produce a very large (infinite) output. You may want to add a precondition.

Specification

Math

\[\begin{array}{l} \\ \cos x \cdot \frac{\sinh y}{y} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (* (cos x) (/ (sinh y) y)))

C

double code(double x, double y) {
	return cos(x) * (sinh(y) / y);
}

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)
use fmin_fmax_functions
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = cos(x) * (sinh(y) / y)
end function

Java

public static double code(double x, double y) {
	return Math.cos(x) * (Math.sinh(y) / y);
}

Python

def code(x, y):
	return math.cos(x) * (math.sinh(y) / y)

Julia

function code(x, y)
	return Float64(cos(x) * Float64(sinh(y) / y))
end

MATLAB

function tmp = code(x, y)
	tmp = cos(x) * (sinh(y) / y);
end

Wolfram

code[x_, y_] := N[(N[Cos[x], $MachinePrecision] * N[(N[Sinh[y], $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]

Initial Program: 100.0% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \cos x \cdot \frac{\sinh y}{y} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (* (cos x) (/ (sinh y) y)))

C

double code(double x, double y) {
	return cos(x) * (sinh(y) / y);
}

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)
use fmin_fmax_functions
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = cos(x) * (sinh(y) / y)
end function

Java

public static double code(double x, double y) {
	return Math.cos(x) * (Math.sinh(y) / y);
}

Python

def code(x, y):
	return math.cos(x) * (math.sinh(y) / y)

Julia

function code(x, y)
	return Float64(cos(x) * Float64(sinh(y) / y))
end

MATLAB

function tmp = code(x, y)
	tmp = cos(x) * (sinh(y) / y);
end

Wolfram

code[x_, y_] := N[(N[Cos[x], $MachinePrecision] * N[(N[Sinh[y], $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]

Alternative 1: 100.0% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \cos x \cdot \frac{\sinh y}{y} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (* (cos x) (/ (sinh y) y)))

C

double code(double x, double y) {
	return cos(x) * (sinh(y) / y);
}

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)
use fmin_fmax_functions
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = cos(x) * (sinh(y) / y)
end function

Java

public static double code(double x, double y) {
	return Math.cos(x) * (Math.sinh(y) / y);
}

Python

def code(x, y):
	return math.cos(x) * (math.sinh(y) / y)

Julia

function code(x, y)
	return Float64(cos(x) * Float64(sinh(y) / y))
end

MATLAB

function tmp = code(x, y)
	tmp = cos(x) * (sinh(y) / y);
end

Wolfram

code[x_, y_] := N[(N[Cos[x], $MachinePrecision] * N[(N[Sinh[y], $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[\cos x \cdot \frac{\sinh y}{y} \]
2. Add Preprocessing

Alternative 2: 99.6% accurate, 0.3× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{\sinh y}{y}\\ t_1 := \cos x \cdot t\_0\\ \mathbf{if}\;t\_1 \leq -\infty:\\ \;\;\;\;t\_0 \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right)\\ \mathbf{elif}\;t\_1 \leq 1:\\ \;\;\;\;\cos x \cdot \frac{y}{y}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1}{\frac{1}{\sinh y}}}{y}\\ \end{array} \end{array} \]

FPCore

(FPCore (x y)
 :precision binary64
 (let* ((t_0 (/ (sinh y) y)) (t_1 (* (cos x) t_0)))
   (if (<= t_1 (- INFINITY))
     (* t_0 (fma (* x x) -0.5 1.0))
     (if (<= t_1 1.0) (* (cos x) (/ y y)) (/ (/ 1.0 (/ 1.0 (sinh y))) y)))))

C

double code(double x, double y) {
	double t_0 = sinh(y) / y;
	double t_1 = cos(x) * t_0;
	double tmp;
	if (t_1 <= -((double) INFINITY)) {
		tmp = t_0 * fma((x * x), -0.5, 1.0);
	} else if (t_1 <= 1.0) {
		tmp = cos(x) * (y / y);
	} else {
		tmp = (1.0 / (1.0 / sinh(y))) / y;
	}
	return tmp;
}

Julia

function code(x, y)
	t_0 = Float64(sinh(y) / y)
	t_1 = Float64(cos(x) * t_0)
	tmp = 0.0
	if (t_1 <= Float64(-Inf))
		tmp = Float64(t_0 * fma(Float64(x * x), -0.5, 1.0));
	elseif (t_1 <= 1.0)
		tmp = Float64(cos(x) * Float64(y / y));
	else
		tmp = Float64(Float64(1.0 / Float64(1.0 / sinh(y))) / y);
	end
	return tmp
end

Wolfram

code[x_, y_] := Block[{t$95$0 = N[(N[Sinh[y], $MachinePrecision] / y), $MachinePrecision]}, Block[{t$95$1 = N[(N[Cos[x], $MachinePrecision] * t$95$0), $MachinePrecision]}, If[LessEqual[t$95$1, (-Infinity)], N[(t$95$0 * N[(N[(x * x), $MachinePrecision] * -0.5 + 1.0), $MachinePrecision]), $MachinePrecision], If[LessEqual[t$95$1, 1.0], N[(N[Cos[x], $MachinePrecision] * N[(y / y), $MachinePrecision]), $MachinePrecision], N[(N[(1.0 / N[(1.0 / N[Sinh[y], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / y), $MachinePrecision]]]]]

Derivation

1. Split input into 3 regimes

2. if (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y)) < -inf.0

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in x around 0

      \[\leadsto \color{blue}{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right)} \cdot \frac{\sinh y}{y} \]
   3. Step-by-step derivation

      1. lower-+.f64 N/A

         \[\leadsto \left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \cdot \frac{\sinh y}{y} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(1 + \frac{-1}{2} \cdot \color{blue}{{x}^{2}}\right) \cdot \frac{\sinh y}{y} \]

      3. lower-pow.f64 63.4

         \[\leadsto \left(1 + -0.5 \cdot {x}^{\color{blue}{2}}\right) \cdot \frac{\sinh y}{y} \]

   4. Applied rewrites 63.4%

      \[\leadsto \color{blue}{\left(1 + -0.5 \cdot {x}^{2}\right)} \cdot \frac{\sinh y}{y} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot \frac{\sinh y}{y}} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{\frac{\sinh y}{y} \cdot \left(1 + \frac{-1}{2} \cdot {x}^{2}\right)} \]

      3. lower-*.f64 63.4

         \[\leadsto \color{blue}{\frac{\sinh y}{y} \cdot \left(1 + -0.5 \cdot {x}^{2}\right)} \]

      4. lift-+.f64 N/A

         \[\leadsto \frac{\sinh y}{y} \cdot \left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \]

      5. +-commutative N/A

         \[\leadsto \frac{\sinh y}{y} \cdot \left(\frac{-1}{2} \cdot {x}^{2} + \color{blue}{1}\right) \]

      6. lift-*.f64 N/A

         \[\leadsto \frac{\sinh y}{y} \cdot \left(\frac{-1}{2} \cdot {x}^{2} + 1\right) \]

      7. *-commutative N/A

         \[\leadsto \frac{\sinh y}{y} \cdot \left({x}^{2} \cdot \frac{-1}{2} + 1\right) \]

      8. lower-fma.f64 63.4

         \[\leadsto \frac{\sinh y}{y} \cdot \mathsf{fma}\left({x}^{2}, \color{blue}{-0.5}, 1\right) \]

      9. lift-pow.f64 N/A

         \[\leadsto \frac{\sinh y}{y} \cdot \mathsf{fma}\left({x}^{2}, \frac{-1}{2}, 1\right) \]

      10. unpow2 N/A

          \[\leadsto \frac{\sinh y}{y} \cdot \mathsf{fma}\left(x \cdot x, \frac{-1}{2}, 1\right) \]

      11. lower-*.f64 63.4

          \[\leadsto \frac{\sinh y}{y} \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right) \]

   6. Applied rewrites 63.4%

      \[\leadsto \color{blue}{\frac{\sinh y}{y} \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right)} \]

   if -inf.0 < (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y)) < 1

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in y around 0

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

   4. Applied rewrites 51.3%

      \[\leadsto \cos x \cdot \frac{\color{blue}{y}}{y} \]

   if 1 < (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y))

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in x around 0

      \[\leadsto \color{blue}{\frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

      2. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{\color{blue}{y}} \]

      3. lower--.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      4. lower-exp.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      5. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      6. lower-exp.f64 40.0

         \[\leadsto 0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

   4. Applied rewrites 40.0%

      \[\leadsto \color{blue}{0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

      2. *-commutative N/A

         \[\leadsto \frac{e^{y} - \frac{1}{e^{y}}}{y} \cdot \color{blue}{\frac{1}{2}} \]

      3. lift-/.f64 N/A

         \[\leadsto \frac{e^{y} - \frac{1}{e^{y}}}{y} \cdot \frac{1}{2} \]

      4. associate-*l/ N/A

         \[\leadsto \frac{\left(e^{y} - \frac{1}{e^{y}}\right) \cdot \frac{1}{2}}{\color{blue}{y}} \]

      5. metadata-eval N/A

         \[\leadsto \frac{\left(e^{y} - \frac{1}{e^{y}}\right) \cdot \frac{1}{2}}{y} \]

      6. mult-flip N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      7. lift--.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      8. lift-exp.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      9. lift-/.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      10. lift-exp.f64 N/A

          \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      11. rec-exp N/A

          \[\leadsto \frac{\frac{e^{y} - e^{\mathsf{neg}\left(y\right)}}{2}}{y} \]

      12. sinh-def N/A

          \[\leadsto \frac{\sinh y}{y} \]

      13. lift-sinh.f64 N/A

          \[\leadsto \frac{\sinh y}{y} \]

      14. lift-/.f64 65.7

          \[\leadsto \frac{\sinh y}{\color{blue}{y}} \]

   6. Applied rewrites 65.7%

      \[\leadsto \color{blue}{\frac{\sinh y}{y}} \]
   7. Step-by-step derivation

      1. lift-sinh.f64 N/A

         \[\leadsto \frac{\sinh y}{y} \]

      2. sinh-def N/A

         \[\leadsto \frac{\frac{e^{y} - e^{\mathsf{neg}\left(y\right)}}{2}}{y} \]

      3. rec-exp N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      4. div-flip N/A

         \[\leadsto \frac{\frac{1}{\frac{2}{e^{y} - \frac{1}{e^{y}}}}}{y} \]

      5. lower-unsound-/.f32 N/A

         \[\leadsto \frac{\frac{1}{\frac{2}{e^{y} - \frac{1}{e^{y}}}}}{y} \]

      6. lower-/.f32 N/A

         \[\leadsto \frac{\frac{1}{\frac{2}{e^{y} - \frac{1}{e^{y}}}}}{y} \]

      7. div-flip-rev N/A

         \[\leadsto \frac{\frac{1}{\frac{1}{\frac{e^{y} - \frac{1}{e^{y}}}{2}}}}{y} \]

      8. rec-exp N/A

         \[\leadsto \frac{\frac{1}{\frac{1}{\frac{e^{y} - e^{\mathsf{neg}\left(y\right)}}{2}}}}{y} \]

      9. sinh-def N/A

         \[\leadsto \frac{\frac{1}{\frac{1}{\sinh y}}}{y} \]

      10. lift-sinh.f64 N/A

          \[\leadsto \frac{\frac{1}{\frac{1}{\sinh y}}}{y} \]

      11. lower-unsound-/.f64 N/A

          \[\leadsto \frac{\frac{1}{\frac{1}{\sinh y}}}{y} \]

      12. lower-/.f64 65.6

          \[\leadsto \frac{\frac{1}{\frac{1}{\sinh y}}}{y} \]

   8. Applied rewrites 65.6%

      \[\leadsto \frac{\frac{1}{\frac{1}{\sinh y}}}{y} \]
3. Recombined 3 regimes into one program.
4. Add Preprocessing

Alternative 3: 78.1% accurate, 0.6× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{\sinh y}{y}\\ \mathbf{if}\;\cos x \cdot t\_0 \leq -0.02:\\ \;\;\;\;t\_0 \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x y)
 :precision binary64
 (let* ((t_0 (/ (sinh y) y)))
   (if (<= (* (cos x) t_0) -0.02) (* t_0 (fma (* x x) -0.5 1.0)) t_0)))

C

double code(double x, double y) {
	double t_0 = sinh(y) / y;
	double tmp;
	if ((cos(x) * t_0) <= -0.02) {
		tmp = t_0 * fma((x * x), -0.5, 1.0);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x, y)
	t_0 = Float64(sinh(y) / y)
	tmp = 0.0
	if (Float64(cos(x) * t_0) <= -0.02)
		tmp = Float64(t_0 * fma(Float64(x * x), -0.5, 1.0));
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x_, y_] := Block[{t$95$0 = N[(N[Sinh[y], $MachinePrecision] / y), $MachinePrecision]}, If[LessEqual[N[(N[Cos[x], $MachinePrecision] * t$95$0), $MachinePrecision], -0.02], N[(t$95$0 * N[(N[(x * x), $MachinePrecision] * -0.5 + 1.0), $MachinePrecision]), $MachinePrecision], t$95$0]]

Derivation

1. Split input into 2 regimes

2. if (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y)) < -0.0200000000000000004

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in x around 0

      \[\leadsto \color{blue}{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right)} \cdot \frac{\sinh y}{y} \]
   3. Step-by-step derivation

      1. lower-+.f64 N/A

         \[\leadsto \left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \cdot \frac{\sinh y}{y} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(1 + \frac{-1}{2} \cdot \color{blue}{{x}^{2}}\right) \cdot \frac{\sinh y}{y} \]

      3. lower-pow.f64 63.4

         \[\leadsto \left(1 + -0.5 \cdot {x}^{\color{blue}{2}}\right) \cdot \frac{\sinh y}{y} \]

   4. Applied rewrites 63.4%

      \[\leadsto \color{blue}{\left(1 + -0.5 \cdot {x}^{2}\right)} \cdot \frac{\sinh y}{y} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot \frac{\sinh y}{y}} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{\frac{\sinh y}{y} \cdot \left(1 + \frac{-1}{2} \cdot {x}^{2}\right)} \]

      3. lower-*.f64 63.4

         \[\leadsto \color{blue}{\frac{\sinh y}{y} \cdot \left(1 + -0.5 \cdot {x}^{2}\right)} \]

      4. lift-+.f64 N/A

         \[\leadsto \frac{\sinh y}{y} \cdot \left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \]

      5. +-commutative N/A

         \[\leadsto \frac{\sinh y}{y} \cdot \left(\frac{-1}{2} \cdot {x}^{2} + \color{blue}{1}\right) \]

      6. lift-*.f64 N/A

         \[\leadsto \frac{\sinh y}{y} \cdot \left(\frac{-1}{2} \cdot {x}^{2} + 1\right) \]

      7. *-commutative N/A

         \[\leadsto \frac{\sinh y}{y} \cdot \left({x}^{2} \cdot \frac{-1}{2} + 1\right) \]

      8. lower-fma.f64 63.4

         \[\leadsto \frac{\sinh y}{y} \cdot \mathsf{fma}\left({x}^{2}, \color{blue}{-0.5}, 1\right) \]

      9. lift-pow.f64 N/A

         \[\leadsto \frac{\sinh y}{y} \cdot \mathsf{fma}\left({x}^{2}, \frac{-1}{2}, 1\right) \]

      10. unpow2 N/A

          \[\leadsto \frac{\sinh y}{y} \cdot \mathsf{fma}\left(x \cdot x, \frac{-1}{2}, 1\right) \]

      11. lower-*.f64 63.4

          \[\leadsto \frac{\sinh y}{y} \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right) \]

   6. Applied rewrites 63.4%

      \[\leadsto \color{blue}{\frac{\sinh y}{y} \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right)} \]

   if -0.0200000000000000004 < (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y))

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in x around 0

      \[\leadsto \color{blue}{\frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

      2. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{\color{blue}{y}} \]

      3. lower--.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      4. lower-exp.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      5. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      6. lower-exp.f64 40.0

         \[\leadsto 0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

   4. Applied rewrites 40.0%

      \[\leadsto \color{blue}{0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

      2. *-commutative N/A

         \[\leadsto \frac{e^{y} - \frac{1}{e^{y}}}{y} \cdot \color{blue}{\frac{1}{2}} \]

      3. lift-/.f64 N/A

         \[\leadsto \frac{e^{y} - \frac{1}{e^{y}}}{y} \cdot \frac{1}{2} \]

      4. associate-*l/ N/A

         \[\leadsto \frac{\left(e^{y} - \frac{1}{e^{y}}\right) \cdot \frac{1}{2}}{\color{blue}{y}} \]

      5. metadata-eval N/A

         \[\leadsto \frac{\left(e^{y} - \frac{1}{e^{y}}\right) \cdot \frac{1}{2}}{y} \]

      6. mult-flip N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      7. lift--.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      8. lift-exp.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      9. lift-/.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      10. lift-exp.f64 N/A

          \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      11. rec-exp N/A

          \[\leadsto \frac{\frac{e^{y} - e^{\mathsf{neg}\left(y\right)}}{2}}{y} \]

      12. sinh-def N/A

          \[\leadsto \frac{\sinh y}{y} \]

      13. lift-sinh.f64 N/A

          \[\leadsto \frac{\sinh y}{y} \]

      14. lift-/.f64 65.7

          \[\leadsto \frac{\sinh y}{\color{blue}{y}} \]

   6. Applied rewrites 65.7%

      \[\leadsto \color{blue}{\frac{\sinh y}{y}} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 4: 75.2% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{\sinh y}{y}\\ \mathbf{if}\;\cos x \cdot t\_0 \leq -0.02:\\ \;\;\;\;\frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{\left(x \cdot x\right) \cdot \left(x \cdot x\right)}, -0.5, 1\right)\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x y)
 :precision binary64
 (let* ((t_0 (/ (sinh y) y)))
   (if (<= (* (cos x) t_0) -0.02)
     (* (/ y y) (fma (sqrt (* (* x x) (* x x))) -0.5 1.0))
     t_0)))

C

double code(double x, double y) {
	double t_0 = sinh(y) / y;
	double tmp;
	if ((cos(x) * t_0) <= -0.02) {
		tmp = (y / y) * fma(sqrt(((x * x) * (x * x))), -0.5, 1.0);
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x, y)
	t_0 = Float64(sinh(y) / y)
	tmp = 0.0
	if (Float64(cos(x) * t_0) <= -0.02)
		tmp = Float64(Float64(y / y) * fma(sqrt(Float64(Float64(x * x) * Float64(x * x))), -0.5, 1.0));
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x_, y_] := Block[{t$95$0 = N[(N[Sinh[y], $MachinePrecision] / y), $MachinePrecision]}, If[LessEqual[N[(N[Cos[x], $MachinePrecision] * t$95$0), $MachinePrecision], -0.02], N[(N[(y / y), $MachinePrecision] * N[(N[Sqrt[N[(N[(x * x), $MachinePrecision] * N[(x * x), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * -0.5 + 1.0), $MachinePrecision]), $MachinePrecision], t$95$0]]

Derivation

1. Split input into 2 regimes

2. if (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y)) < -0.0200000000000000004

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in y around 0

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

   4. Applied rewrites 51.3%

      \[\leadsto \cos x \cdot \frac{\color{blue}{y}}{y} \]

   5. Taylor expanded in x around 0

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

      1. lower-+.f64 N/A

         \[\leadsto \left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \cdot \frac{y}{y} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(1 + \frac{-1}{2} \cdot \color{blue}{{x}^{2}}\right) \cdot \frac{y}{y} \]

      3. lower-pow.f64 32.8

         \[\leadsto \left(1 + -0.5 \cdot {x}^{\color{blue}{2}}\right) \cdot \frac{y}{y} \]

   7. Applied rewrites 32.8%

      \[\leadsto \color{blue}{\left(1 + -0.5 \cdot {x}^{2}\right)} \cdot \frac{y}{y} \]
   8. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot \frac{y}{y}} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y}{y} \cdot \left(1 + \frac{-1}{2} \cdot {x}^{2}\right)} \]

      3. lift-+.f64 N/A

         \[\leadsto \frac{y}{y} \cdot \left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \]

      4. +-commutative N/A

         \[\leadsto \frac{y}{y} \cdot \left(\frac{-1}{2} \cdot {x}^{2} + \color{blue}{1}\right) \]

      5. lift-*.f64 N/A

         \[\leadsto \frac{y}{y} \cdot \left(\frac{-1}{2} \cdot {x}^{2} + 1\right) \]

      6. lift-pow.f64 N/A

         \[\leadsto \frac{y}{y} \cdot \left(\frac{-1}{2} \cdot {x}^{2} + 1\right) \]

      7. pow2 N/A

         \[\leadsto \frac{y}{y} \cdot \left(\frac{-1}{2} \cdot \left(x \cdot x\right) + 1\right) \]

      8. lift-*.f64 N/A

         \[\leadsto \frac{y}{y} \cdot \left(\frac{-1}{2} \cdot \left(x \cdot x\right) + 1\right) \]

      9. *-commutative N/A

         \[\leadsto \frac{y}{y} \cdot \left(\left(x \cdot x\right) \cdot \frac{-1}{2} + 1\right) \]

      10. lift-fma.f64 N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(x \cdot x, \color{blue}{\frac{-1}{2}}, 1\right) \]

      11. lower-*.f64 32.8

          \[\leadsto \color{blue}{\frac{y}{y} \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right)} \]

   9. Applied rewrites 32.8%

      \[\leadsto \color{blue}{\frac{y}{y} \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right)} \]
   10. Step-by-step derivation

       1. lift-*.f64 N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(x \cdot x, \frac{-1}{2}, 1\right) \]

       2. sqr-neg-rev N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\left(\mathsf{neg}\left(x\right)\right) \cdot \left(\mathsf{neg}\left(x\right)\right), \frac{-1}{2}, 1\right) \]

       3. lift-neg.f64 N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\left(-x\right) \cdot \left(\mathsf{neg}\left(x\right)\right), \frac{-1}{2}, 1\right) \]

       4. lift-neg.f64 N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\left(-x\right) \cdot \left(-x\right), \frac{-1}{2}, 1\right) \]

       5. pow2 N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left({\left(-x\right)}^{2}, \frac{-1}{2}, 1\right) \]

       6. exp-to-pow N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(e^{\log \left(-x\right) \cdot 2}, \frac{-1}{2}, 1\right) \]

       7. lift-log.f64 N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(e^{\log \left(-x\right) \cdot 2}, \frac{-1}{2}, 1\right) \]

       8. lift-*.f64 N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(e^{\log \left(-x\right) \cdot 2}, \frac{-1}{2}, 1\right) \]

       9. exp-fabs N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\left|e^{\log \left(-x\right) \cdot 2}\right|, \frac{-1}{2}, 1\right) \]

       10. lift-exp.f64 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\left|e^{\log \left(-x\right) \cdot 2}\right|, \frac{-1}{2}, 1\right) \]

       11. rem-sqrt-square-rev N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{e^{\log \left(-x\right) \cdot 2} \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       12. lower-sqrt.f64 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{e^{\log \left(-x\right) \cdot 2} \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       13. lower-*.f64 17.8

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{e^{\log \left(-x\right) \cdot 2} \cdot e^{\log \left(-x\right) \cdot 2}}, -0.5, 1\right) \]

       14. lift-exp.f64 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{e^{\log \left(-x\right) \cdot 2} \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       15. lift-*.f64 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{e^{\log \left(-x\right) \cdot 2} \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       16. lift-log.f64 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{e^{\log \left(-x\right) \cdot 2} \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       17. exp-to-pow N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{{\left(-x\right)}^{2} \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       18. pow2 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{\left(\left(-x\right) \cdot \left(-x\right)\right) \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       19. lift-neg.f64 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{\left(\left(\mathsf{neg}\left(x\right)\right) \cdot \left(-x\right)\right) \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       20. lift-neg.f64 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{\left(\left(\mathsf{neg}\left(x\right)\right) \cdot \left(\mathsf{neg}\left(x\right)\right)\right) \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       21. sqr-neg-rev N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{\left(x \cdot x\right) \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       22. lift-*.f64 17.8

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{\left(x \cdot x\right) \cdot e^{\log \left(-x\right) \cdot 2}}, -0.5, 1\right) \]

       23. lift-exp.f64 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{\left(x \cdot x\right) \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       24. lift-*.f64 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{\left(x \cdot x\right) \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

       25. lift-log.f64 N/A

           \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{\left(x \cdot x\right) \cdot e^{\log \left(-x\right) \cdot 2}}, \frac{-1}{2}, 1\right) \]

   11. Applied rewrites 35.8%

       \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(\sqrt{\left(x \cdot x\right) \cdot \left(x \cdot x\right)}, -0.5, 1\right) \]

   if -0.0200000000000000004 < (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y))

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in x around 0

      \[\leadsto \color{blue}{\frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

      2. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{\color{blue}{y}} \]

      3. lower--.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      4. lower-exp.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      5. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      6. lower-exp.f64 40.0

         \[\leadsto 0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

   4. Applied rewrites 40.0%

      \[\leadsto \color{blue}{0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

      2. *-commutative N/A

         \[\leadsto \frac{e^{y} - \frac{1}{e^{y}}}{y} \cdot \color{blue}{\frac{1}{2}} \]

      3. lift-/.f64 N/A

         \[\leadsto \frac{e^{y} - \frac{1}{e^{y}}}{y} \cdot \frac{1}{2} \]

      4. associate-*l/ N/A

         \[\leadsto \frac{\left(e^{y} - \frac{1}{e^{y}}\right) \cdot \frac{1}{2}}{\color{blue}{y}} \]

      5. metadata-eval N/A

         \[\leadsto \frac{\left(e^{y} - \frac{1}{e^{y}}\right) \cdot \frac{1}{2}}{y} \]

      6. mult-flip N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      7. lift--.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      8. lift-exp.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      9. lift-/.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      10. lift-exp.f64 N/A

          \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      11. rec-exp N/A

          \[\leadsto \frac{\frac{e^{y} - e^{\mathsf{neg}\left(y\right)}}{2}}{y} \]

      12. sinh-def N/A

          \[\leadsto \frac{\sinh y}{y} \]

      13. lift-sinh.f64 N/A

          \[\leadsto \frac{\sinh y}{y} \]

      14. lift-/.f64 65.7

          \[\leadsto \frac{\sinh y}{\color{blue}{y}} \]

   6. Applied rewrites 65.7%

      \[\leadsto \color{blue}{\frac{\sinh y}{y}} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 5: 75.1% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{\sinh y}{y}\\ \mathbf{if}\;\cos x \cdot t\_0 \leq -0.02:\\ \;\;\;\;\frac{\mathsf{fma}\left(x \cdot x, -0.5, 1\right) \cdot y}{y}\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]

FPCore

(FPCore (x y)
 :precision binary64
 (let* ((t_0 (/ (sinh y) y)))
   (if (<= (* (cos x) t_0) -0.02) (/ (* (fma (* x x) -0.5 1.0) y) y) t_0)))

C

double code(double x, double y) {
	double t_0 = sinh(y) / y;
	double tmp;
	if ((cos(x) * t_0) <= -0.02) {
		tmp = (fma((x * x), -0.5, 1.0) * y) / y;
	} else {
		tmp = t_0;
	}
	return tmp;
}

Julia

function code(x, y)
	t_0 = Float64(sinh(y) / y)
	tmp = 0.0
	if (Float64(cos(x) * t_0) <= -0.02)
		tmp = Float64(Float64(fma(Float64(x * x), -0.5, 1.0) * y) / y);
	else
		tmp = t_0;
	end
	return tmp
end

Wolfram

code[x_, y_] := Block[{t$95$0 = N[(N[Sinh[y], $MachinePrecision] / y), $MachinePrecision]}, If[LessEqual[N[(N[Cos[x], $MachinePrecision] * t$95$0), $MachinePrecision], -0.02], N[(N[(N[(N[(x * x), $MachinePrecision] * -0.5 + 1.0), $MachinePrecision] * y), $MachinePrecision] / y), $MachinePrecision], t$95$0]]

Derivation

1. Split input into 2 regimes

2. if (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y)) < -0.0200000000000000004

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in y around 0

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

   4. Applied rewrites 51.3%

      \[\leadsto \cos x \cdot \frac{\color{blue}{y}}{y} \]

   5. Taylor expanded in x around 0

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

      1. lower-+.f64 N/A

         \[\leadsto \left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \cdot \frac{y}{y} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(1 + \frac{-1}{2} \cdot \color{blue}{{x}^{2}}\right) \cdot \frac{y}{y} \]

      3. lower-pow.f64 32.8

         \[\leadsto \left(1 + -0.5 \cdot {x}^{\color{blue}{2}}\right) \cdot \frac{y}{y} \]

   7. Applied rewrites 32.8%

      \[\leadsto \color{blue}{\left(1 + -0.5 \cdot {x}^{2}\right)} \cdot \frac{y}{y} \]
   8. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot \frac{y}{y}} \]

      2. lift-/.f64 N/A

         \[\leadsto \left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot \color{blue}{\frac{y}{y}} \]

      3. associate-*r/ N/A

         \[\leadsto \color{blue}{\frac{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot y}{y}} \]

      4. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot y}{y}} \]

      5. lift-+.f64 N/A

         \[\leadsto \frac{\left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \cdot y}{y} \]

      6. +-commutative N/A

         \[\leadsto \frac{\left(\frac{-1}{2} \cdot {x}^{2} + \color{blue}{1}\right) \cdot y}{y} \]

      7. lift-*.f64 N/A

         \[\leadsto \frac{\left(\frac{-1}{2} \cdot {x}^{2} + 1\right) \cdot y}{y} \]

      8. lift-pow.f64 N/A

         \[\leadsto \frac{\left(\frac{-1}{2} \cdot {x}^{2} + 1\right) \cdot y}{y} \]

      9. pow2 N/A

         \[\leadsto \frac{\left(\frac{-1}{2} \cdot \left(x \cdot x\right) + 1\right) \cdot y}{y} \]

      10. lift-*.f64 N/A

          \[\leadsto \frac{\left(\frac{-1}{2} \cdot \left(x \cdot x\right) + 1\right) \cdot y}{y} \]

      11. *-commutative N/A

          \[\leadsto \frac{\left(\left(x \cdot x\right) \cdot \frac{-1}{2} + 1\right) \cdot y}{y} \]

      12. lift-fma.f64 N/A

          \[\leadsto \frac{\mathsf{fma}\left(x \cdot x, \color{blue}{\frac{-1}{2}}, 1\right) \cdot y}{y} \]

      13. lower-*.f64 35.7

          \[\leadsto \frac{\color{blue}{\mathsf{fma}\left(x \cdot x, -0.5, 1\right) \cdot y}}{y} \]

   9. Applied rewrites 35.7%

      \[\leadsto \color{blue}{\frac{\mathsf{fma}\left(x \cdot x, -0.5, 1\right) \cdot y}{y}} \]

   if -0.0200000000000000004 < (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y))

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in x around 0

      \[\leadsto \color{blue}{\frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

      2. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{\color{blue}{y}} \]

      3. lower--.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      4. lower-exp.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      5. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      6. lower-exp.f64 40.0

         \[\leadsto 0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

   4. Applied rewrites 40.0%

      \[\leadsto \color{blue}{0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

      2. *-commutative N/A

         \[\leadsto \frac{e^{y} - \frac{1}{e^{y}}}{y} \cdot \color{blue}{\frac{1}{2}} \]

      3. lift-/.f64 N/A

         \[\leadsto \frac{e^{y} - \frac{1}{e^{y}}}{y} \cdot \frac{1}{2} \]

      4. associate-*l/ N/A

         \[\leadsto \frac{\left(e^{y} - \frac{1}{e^{y}}\right) \cdot \frac{1}{2}}{\color{blue}{y}} \]

      5. metadata-eval N/A

         \[\leadsto \frac{\left(e^{y} - \frac{1}{e^{y}}\right) \cdot \frac{1}{2}}{y} \]

      6. mult-flip N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      7. lift--.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      8. lift-exp.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      9. lift-/.f64 N/A

         \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      10. lift-exp.f64 N/A

          \[\leadsto \frac{\frac{e^{y} - \frac{1}{e^{y}}}{2}}{y} \]

      11. rec-exp N/A

          \[\leadsto \frac{\frac{e^{y} - e^{\mathsf{neg}\left(y\right)}}{2}}{y} \]

      12. sinh-def N/A

          \[\leadsto \frac{\sinh y}{y} \]

      13. lift-sinh.f64 N/A

          \[\leadsto \frac{\sinh y}{y} \]

      14. lift-/.f64 65.7

          \[\leadsto \frac{\sinh y}{\color{blue}{y}} \]

   6. Applied rewrites 65.7%

      \[\leadsto \color{blue}{\frac{\sinh y}{y}} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 6: 38.6% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;\cos x \cdot \frac{\sinh y}{y} \leq -0.02:\\ \;\;\;\;\frac{\mathsf{fma}\left(x \cdot x, -0.5, 1\right) \cdot y}{y}\\ \mathbf{else}:\\ \;\;\;\;0.5 \cdot 2\\ \end{array} \end{array} \]

FPCore

(FPCore (x y)
 :precision binary64
 (if (<= (* (cos x) (/ (sinh y) y)) -0.02)
   (/ (* (fma (* x x) -0.5 1.0) y) y)
   (* 0.5 2.0)))

C

double code(double x, double y) {
	double tmp;
	if ((cos(x) * (sinh(y) / y)) <= -0.02) {
		tmp = (fma((x * x), -0.5, 1.0) * y) / y;
	} else {
		tmp = 0.5 * 2.0;
	}
	return tmp;
}

Julia

function code(x, y)
	tmp = 0.0
	if (Float64(cos(x) * Float64(sinh(y) / y)) <= -0.02)
		tmp = Float64(Float64(fma(Float64(x * x), -0.5, 1.0) * y) / y);
	else
		tmp = Float64(0.5 * 2.0);
	end
	return tmp
end

Wolfram

code[x_, y_] := If[LessEqual[N[(N[Cos[x], $MachinePrecision] * N[(N[Sinh[y], $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision], -0.02], N[(N[(N[(N[(x * x), $MachinePrecision] * -0.5 + 1.0), $MachinePrecision] * y), $MachinePrecision] / y), $MachinePrecision], N[(0.5 * 2.0), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y)) < -0.0200000000000000004

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in y around 0

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

   4. Applied rewrites 51.3%

      \[\leadsto \cos x \cdot \frac{\color{blue}{y}}{y} \]

   5. Taylor expanded in x around 0

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

      1. lower-+.f64 N/A

         \[\leadsto \left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \cdot \frac{y}{y} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(1 + \frac{-1}{2} \cdot \color{blue}{{x}^{2}}\right) \cdot \frac{y}{y} \]

      3. lower-pow.f64 32.8

         \[\leadsto \left(1 + -0.5 \cdot {x}^{\color{blue}{2}}\right) \cdot \frac{y}{y} \]

   7. Applied rewrites 32.8%

      \[\leadsto \color{blue}{\left(1 + -0.5 \cdot {x}^{2}\right)} \cdot \frac{y}{y} \]
   8. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot \frac{y}{y}} \]

      2. lift-/.f64 N/A

         \[\leadsto \left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot \color{blue}{\frac{y}{y}} \]

      3. associate-*r/ N/A

         \[\leadsto \color{blue}{\frac{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot y}{y}} \]

      4. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot y}{y}} \]

      5. lift-+.f64 N/A

         \[\leadsto \frac{\left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \cdot y}{y} \]

      6. +-commutative N/A

         \[\leadsto \frac{\left(\frac{-1}{2} \cdot {x}^{2} + \color{blue}{1}\right) \cdot y}{y} \]

      7. lift-*.f64 N/A

         \[\leadsto \frac{\left(\frac{-1}{2} \cdot {x}^{2} + 1\right) \cdot y}{y} \]

      8. lift-pow.f64 N/A

         \[\leadsto \frac{\left(\frac{-1}{2} \cdot {x}^{2} + 1\right) \cdot y}{y} \]

      9. pow2 N/A

         \[\leadsto \frac{\left(\frac{-1}{2} \cdot \left(x \cdot x\right) + 1\right) \cdot y}{y} \]

      10. lift-*.f64 N/A

          \[\leadsto \frac{\left(\frac{-1}{2} \cdot \left(x \cdot x\right) + 1\right) \cdot y}{y} \]

      11. *-commutative N/A

          \[\leadsto \frac{\left(\left(x \cdot x\right) \cdot \frac{-1}{2} + 1\right) \cdot y}{y} \]

      12. lift-fma.f64 N/A

          \[\leadsto \frac{\mathsf{fma}\left(x \cdot x, \color{blue}{\frac{-1}{2}}, 1\right) \cdot y}{y} \]

      13. lower-*.f64 35.7

          \[\leadsto \frac{\color{blue}{\mathsf{fma}\left(x \cdot x, -0.5, 1\right) \cdot y}}{y} \]

   9. Applied rewrites 35.7%

      \[\leadsto \color{blue}{\frac{\mathsf{fma}\left(x \cdot x, -0.5, 1\right) \cdot y}{y}} \]

   if -0.0200000000000000004 < (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y))

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in x around 0

      \[\leadsto \color{blue}{\frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

      2. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{\color{blue}{y}} \]

      3. lower--.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      4. lower-exp.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      5. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      6. lower-exp.f64 40.0

         \[\leadsto 0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

   4. Applied rewrites 40.0%

      \[\leadsto \color{blue}{0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

   5. Taylor expanded in y around 0

      \[\leadsto \frac{1}{2} \cdot 2 \]
   6. Step-by-step derivation

   7. Applied rewrites 29.2%

      \[\leadsto 0.5 \cdot 2 \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 7: 35.6% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;\cos x \cdot \frac{\sinh y}{y} \leq -0.02:\\ \;\;\;\;\frac{y}{y} \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right)\\ \mathbf{else}:\\ \;\;\;\;0.5 \cdot 2\\ \end{array} \end{array} \]

FPCore

(FPCore (x y)
 :precision binary64
 (if (<= (* (cos x) (/ (sinh y) y)) -0.02)
   (* (/ y y) (fma (* x x) -0.5 1.0))
   (* 0.5 2.0)))

C

double code(double x, double y) {
	double tmp;
	if ((cos(x) * (sinh(y) / y)) <= -0.02) {
		tmp = (y / y) * fma((x * x), -0.5, 1.0);
	} else {
		tmp = 0.5 * 2.0;
	}
	return tmp;
}

Julia

function code(x, y)
	tmp = 0.0
	if (Float64(cos(x) * Float64(sinh(y) / y)) <= -0.02)
		tmp = Float64(Float64(y / y) * fma(Float64(x * x), -0.5, 1.0));
	else
		tmp = Float64(0.5 * 2.0);
	end
	return tmp
end

Wolfram

code[x_, y_] := If[LessEqual[N[(N[Cos[x], $MachinePrecision] * N[(N[Sinh[y], $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision], -0.02], N[(N[(y / y), $MachinePrecision] * N[(N[(x * x), $MachinePrecision] * -0.5 + 1.0), $MachinePrecision]), $MachinePrecision], N[(0.5 * 2.0), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y)) < -0.0200000000000000004

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in y around 0

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

   4. Applied rewrites 51.3%

      \[\leadsto \cos x \cdot \frac{\color{blue}{y}}{y} \]

   5. Taylor expanded in x around 0

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

      1. lower-+.f64 N/A

         \[\leadsto \left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \cdot \frac{y}{y} \]

      2. lower-*.f64 N/A

         \[\leadsto \left(1 + \frac{-1}{2} \cdot \color{blue}{{x}^{2}}\right) \cdot \frac{y}{y} \]

      3. lower-pow.f64 32.8

         \[\leadsto \left(1 + -0.5 \cdot {x}^{\color{blue}{2}}\right) \cdot \frac{y}{y} \]

   7. Applied rewrites 32.8%

      \[\leadsto \color{blue}{\left(1 + -0.5 \cdot {x}^{2}\right)} \cdot \frac{y}{y} \]
   8. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\left(1 + \frac{-1}{2} \cdot {x}^{2}\right) \cdot \frac{y}{y}} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y}{y} \cdot \left(1 + \frac{-1}{2} \cdot {x}^{2}\right)} \]

      3. lift-+.f64 N/A

         \[\leadsto \frac{y}{y} \cdot \left(1 + \color{blue}{\frac{-1}{2} \cdot {x}^{2}}\right) \]

      4. +-commutative N/A

         \[\leadsto \frac{y}{y} \cdot \left(\frac{-1}{2} \cdot {x}^{2} + \color{blue}{1}\right) \]

      5. lift-*.f64 N/A

         \[\leadsto \frac{y}{y} \cdot \left(\frac{-1}{2} \cdot {x}^{2} + 1\right) \]

      6. lift-pow.f64 N/A

         \[\leadsto \frac{y}{y} \cdot \left(\frac{-1}{2} \cdot {x}^{2} + 1\right) \]

      7. pow2 N/A

         \[\leadsto \frac{y}{y} \cdot \left(\frac{-1}{2} \cdot \left(x \cdot x\right) + 1\right) \]

      8. lift-*.f64 N/A

         \[\leadsto \frac{y}{y} \cdot \left(\frac{-1}{2} \cdot \left(x \cdot x\right) + 1\right) \]

      9. *-commutative N/A

         \[\leadsto \frac{y}{y} \cdot \left(\left(x \cdot x\right) \cdot \frac{-1}{2} + 1\right) \]

      10. lift-fma.f64 N/A

          \[\leadsto \frac{y}{y} \cdot \mathsf{fma}\left(x \cdot x, \color{blue}{\frac{-1}{2}}, 1\right) \]

      11. lower-*.f64 32.8

          \[\leadsto \color{blue}{\frac{y}{y} \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right)} \]

   9. Applied rewrites 32.8%

      \[\leadsto \color{blue}{\frac{y}{y} \cdot \mathsf{fma}\left(x \cdot x, -0.5, 1\right)} \]

   if -0.0200000000000000004 < (*.f64 (cos.f64 x) (/.f64 (sinh.f64 y) y))

   1. Initial program 100.0%

      \[\cos x \cdot \frac{\sinh y}{y} \]

   2. Taylor expanded in x around 0

      \[\leadsto \color{blue}{\frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
   3. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

      2. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{\color{blue}{y}} \]

      3. lower--.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      4. lower-exp.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      5. lower-/.f64 N/A

         \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

      6. lower-exp.f64 40.0

         \[\leadsto 0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

   4. Applied rewrites 40.0%

      \[\leadsto \color{blue}{0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

   5. Taylor expanded in y around 0

      \[\leadsto \frac{1}{2} \cdot 2 \]
   6. Step-by-step derivation

   7. Applied rewrites 29.2%

      \[\leadsto 0.5 \cdot 2 \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 8: 29.2% accurate, 13.0× speedup

Math

\[\begin{array}{l} \\ 0.5 \cdot 2 \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (* 0.5 2.0))

C

double code(double x, double y) {
	return 0.5 * 2.0;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

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

real(8) function code(x, y)
use fmin_fmax_functions
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = 0.5d0 * 2.0d0
end function

Java

public static double code(double x, double y) {
	return 0.5 * 2.0;
}

Python

def code(x, y):
	return 0.5 * 2.0

Julia

function code(x, y)
	return Float64(0.5 * 2.0)
end

MATLAB

function tmp = code(x, y)
	tmp = 0.5 * 2.0;
end

Wolfram

code[x_, y_] := N[(0.5 * 2.0), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[\cos x \cdot \frac{\sinh y}{y} \]

2. Taylor expanded in x around 0

   \[\leadsto \color{blue}{\frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]
3. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{1}{2} \cdot \color{blue}{\frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

   2. lower-/.f64 N/A

      \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{\color{blue}{y}} \]

   3. lower--.f64 N/A

      \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

   4. lower-exp.f64 N/A

      \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

   5. lower-/.f64 N/A

      \[\leadsto \frac{1}{2} \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

   6. lower-exp.f64 40.0

      \[\leadsto 0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y} \]

4. Applied rewrites 40.0%

   \[\leadsto \color{blue}{0.5 \cdot \frac{e^{y} - \frac{1}{e^{y}}}{y}} \]

5. Taylor expanded in y around 0

   \[\leadsto \frac{1}{2} \cdot 2 \]
6. Step-by-step derivation

7. Applied rewrites 29.2%

   \[\leadsto 0.5 \cdot 2 \]
8. Add Preprocessing

Reproduce

herbie shell --seed 2025155 
(FPCore (x y)
  :name "Linear.Quaternion:$csin from linear-1.19.1.3"
  :precision binary64
  (* (cos x) (/ (sinh y) y)))