Graphics.Rendering.Chart.Plot.AreaSpots:renderAreaSpots4D from Chart-1.5.3

Percentage Accurate: 84.2% → 97.1%

Time: 9.3s

Alternatives: 10

Speedup: 1.0×

Specification

Math

\[\begin{array}{l} \\ \frac{x \cdot \left(y - z\right)}{t - z} \end{array} \]

FPCore

(FPCore (x y z t) :precision binary64 (/ (* x (- y z)) (- t z)))

C

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

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    code = (x * (y - z)) / (t - z)
end function

Java

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

Python

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

Julia

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

MATLAB

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

Wolfram

code[x_, y_, z_, t_] := N[(N[(x * N[(y - z), $MachinePrecision]), $MachinePrecision] / N[(t - z), $MachinePrecision]), $MachinePrecision]

Initial Program: 84.2% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \frac{x \cdot \left(y - z\right)}{t - z} \end{array} \]

FPCore

(FPCore (x y z t) :precision binary64 (/ (* x (- y z)) (- t z)))

C

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

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    code = (x * (y - z)) / (t - z)
end function

Java

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

Python

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

Julia

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

MATLAB

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

Wolfram

code[x_, y_, z_, t_] := N[(N[(x * N[(y - z), $MachinePrecision]), $MachinePrecision] / N[(t - z), $MachinePrecision]), $MachinePrecision]

Alternative 1: 97.1% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ x \cdot \frac{y - z}{t - z} \end{array} \]

FPCore

(FPCore (x y z t) :precision binary64 (* x (/ (- y z) (- t z))))

C

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

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    code = x * ((y - z) / (t - z))
end function

Java

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

Python

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

Julia

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

MATLAB

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

Wolfram

code[x_, y_, z_, t_] := N[(x * N[(N[(y - z), $MachinePrecision] / N[(t - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 84.9%

   \[\frac{x \cdot \left(y - z\right)}{t - z} \]
2. Add Preprocessing
3. Step-by-step derivation

   1. lift-/.f64 N/A

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

   2. lift-*.f64 N/A

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

   3. associate-/l* N/A

      \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

   4. *-commutative N/A

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   5. lower-*.f64 N/A

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   6. lower-/.f64 96.9

      \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

4. Applied rewrites 96.9%

   \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

5. Final simplification 96.9%

   \[\leadsto x \cdot \frac{y - z}{t - z} \]
6. Add Preprocessing

Alternative 2: 75.9% accurate, 0.6× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{z}{z - t} \cdot x\\ \mathbf{if}\;z \leq -4.8 \cdot 10^{+105}:\\ \;\;\;\;\frac{y - z}{-z} \cdot x\\ \mathbf{elif}\;z \leq -1.15 \cdot 10^{+20}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 2.3 \cdot 10^{-49}:\\ \;\;\;\;\frac{y}{t - z} \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (/ z (- z t)) x)))
   (if (<= z -4.8e+105)
     (* (/ (- y z) (- z)) x)
     (if (<= z -1.15e+20) t_1 (if (<= z 2.3e-49) (* (/ y (- t z)) x) t_1)))))

C

double code(double x, double y, double z, double t) {
	double t_1 = (z / (z - t)) * x;
	double tmp;
	if (z <= -4.8e+105) {
		tmp = ((y - z) / -z) * x;
	} else if (z <= -1.15e+20) {
		tmp = t_1;
	} else if (z <= 2.3e-49) {
		tmp = (y / (t - z)) * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (z / (z - t)) * x
    if (z <= (-4.8d+105)) then
        tmp = ((y - z) / -z) * x
    else if (z <= (-1.15d+20)) then
        tmp = t_1
    else if (z <= 2.3d-49) then
        tmp = (y / (t - z)) * x
    else
        tmp = t_1
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z, double t) {
	double t_1 = (z / (z - t)) * x;
	double tmp;
	if (z <= -4.8e+105) {
		tmp = ((y - z) / -z) * x;
	} else if (z <= -1.15e+20) {
		tmp = t_1;
	} else if (z <= 2.3e-49) {
		tmp = (y / (t - z)) * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	t_1 = (z / (z - t)) * x
	tmp = 0
	if z <= -4.8e+105:
		tmp = ((y - z) / -z) * x
	elif z <= -1.15e+20:
		tmp = t_1
	elif z <= 2.3e-49:
		tmp = (y / (t - z)) * x
	else:
		tmp = t_1
	return tmp

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(z / Float64(z - t)) * x)
	tmp = 0.0
	if (z <= -4.8e+105)
		tmp = Float64(Float64(Float64(y - z) / Float64(-z)) * x);
	elseif (z <= -1.15e+20)
		tmp = t_1;
	elseif (z <= 2.3e-49)
		tmp = Float64(Float64(y / Float64(t - z)) * x);
	else
		tmp = t_1;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	t_1 = (z / (z - t)) * x;
	tmp = 0.0;
	if (z <= -4.8e+105)
		tmp = ((y - z) / -z) * x;
	elseif (z <= -1.15e+20)
		tmp = t_1;
	elseif (z <= 2.3e-49)
		tmp = (y / (t - z)) * x;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(z / N[(z - t), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision]}, If[LessEqual[z, -4.8e+105], N[(N[(N[(y - z), $MachinePrecision] / (-z)), $MachinePrecision] * x), $MachinePrecision], If[LessEqual[z, -1.15e+20], t$95$1, If[LessEqual[z, 2.3e-49], N[(N[(y / N[(t - z), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision], t$95$1]]]]

Derivation

1. Split input into 3 regimes

2. if z < -4.7999999999999995e105

   1. Initial program 71.0%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 99.9

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 99.9%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   5. Taylor expanded in t around 0

      \[\leadsto \frac{y - z}{\color{blue}{-1 \cdot z}} \cdot x \]
   6. Step-by-step derivation

      1. mul-1-neg N/A

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

      2. lower-neg.f64 87.2

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

   7. Applied rewrites 87.2%

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

   if -4.7999999999999995e105 < z < -1.15e20 or 2.2999999999999999e-49 < z

   1. Initial program 77.5%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 99.8

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      3. lift-/.f64 N/A

         \[\leadsto x \cdot \color{blue}{\frac{y - z}{t - z}} \]

      4. clear-num N/A

         \[\leadsto x \cdot \color{blue}{\frac{1}{\frac{t - z}{y - z}}} \]

      5. un-div-inv N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      6. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      7. frac-2neg N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      8. lower-/.f64 N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      9. neg-sub0 N/A

         \[\leadsto \frac{x}{\frac{\color{blue}{0 - \left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      10. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      11. sub-neg N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t + \left(\mathsf{neg}\left(z\right)\right)\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      12. +-commutative N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + t\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      13. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      14. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      15. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      16. lower--.f64 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      17. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{0 - \left(y - z\right)}}} \]

      18. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y - z\right)}}} \]

      19. sub-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y + \left(\mathsf{neg}\left(z\right)\right)\right)}}} \]

      20. +-commutative N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + y\right)}}} \]

      21. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - y}}} \]

      22. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - y}} \]

      23. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z} - y}} \]

      24. lower--.f64 99.8

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z - y}}} \]

   6. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{x}{\frac{z - t}{z - y}}} \]

   7. Taylor expanded in y around 0

      \[\leadsto \color{blue}{\frac{x \cdot z}{z - t}} \]
   8. Step-by-step derivation

      1. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{z}{z - t}} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      3. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      4. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t}} \cdot x \]

      5. lower--.f64 78.9

         \[\leadsto \frac{z}{\color{blue}{z - t}} \cdot x \]

   9. Applied rewrites 78.9%

      \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

   if -1.15e20 < z < 2.2999999999999999e-49

   1. Initial program 94.8%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 93.7

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 93.7%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   5. Taylor expanded in y around inf

      \[\leadsto \color{blue}{\frac{y}{t - z}} \cdot x \]
   6. Step-by-step derivation

      1. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{y}{t - z}} \cdot x \]

      2. lower--.f64 81.4

         \[\leadsto \frac{y}{\color{blue}{t - z}} \cdot x \]

   7. Applied rewrites 81.4%

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

Alternative 3: 74.4% accurate, 0.6× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{z}{z - t} \cdot x\\ \mathbf{if}\;z \leq -4.8 \cdot 10^{+105}:\\ \;\;\;\;x - \frac{x \cdot y}{z}\\ \mathbf{elif}\;z \leq -1.15 \cdot 10^{+20}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 2.3 \cdot 10^{-49}:\\ \;\;\;\;\frac{y}{t - z} \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (/ z (- z t)) x)))
   (if (<= z -4.8e+105)
     (- x (/ (* x y) z))
     (if (<= z -1.15e+20) t_1 (if (<= z 2.3e-49) (* (/ y (- t z)) x) t_1)))))

C

double code(double x, double y, double z, double t) {
	double t_1 = (z / (z - t)) * x;
	double tmp;
	if (z <= -4.8e+105) {
		tmp = x - ((x * y) / z);
	} else if (z <= -1.15e+20) {
		tmp = t_1;
	} else if (z <= 2.3e-49) {
		tmp = (y / (t - z)) * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (z / (z - t)) * x
    if (z <= (-4.8d+105)) then
        tmp = x - ((x * y) / z)
    else if (z <= (-1.15d+20)) then
        tmp = t_1
    else if (z <= 2.3d-49) then
        tmp = (y / (t - z)) * x
    else
        tmp = t_1
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z, double t) {
	double t_1 = (z / (z - t)) * x;
	double tmp;
	if (z <= -4.8e+105) {
		tmp = x - ((x * y) / z);
	} else if (z <= -1.15e+20) {
		tmp = t_1;
	} else if (z <= 2.3e-49) {
		tmp = (y / (t - z)) * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	t_1 = (z / (z - t)) * x
	tmp = 0
	if z <= -4.8e+105:
		tmp = x - ((x * y) / z)
	elif z <= -1.15e+20:
		tmp = t_1
	elif z <= 2.3e-49:
		tmp = (y / (t - z)) * x
	else:
		tmp = t_1
	return tmp

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(z / Float64(z - t)) * x)
	tmp = 0.0
	if (z <= -4.8e+105)
		tmp = Float64(x - Float64(Float64(x * y) / z));
	elseif (z <= -1.15e+20)
		tmp = t_1;
	elseif (z <= 2.3e-49)
		tmp = Float64(Float64(y / Float64(t - z)) * x);
	else
		tmp = t_1;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	t_1 = (z / (z - t)) * x;
	tmp = 0.0;
	if (z <= -4.8e+105)
		tmp = x - ((x * y) / z);
	elseif (z <= -1.15e+20)
		tmp = t_1;
	elseif (z <= 2.3e-49)
		tmp = (y / (t - z)) * x;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(z / N[(z - t), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision]}, If[LessEqual[z, -4.8e+105], N[(x - N[(N[(x * y), $MachinePrecision] / z), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, -1.15e+20], t$95$1, If[LessEqual[z, 2.3e-49], N[(N[(y / N[(t - z), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision], t$95$1]]]]

Derivation

1. Split input into 3 regimes

2. if z < -4.7999999999999995e105

   1. Initial program 71.0%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing

   3. Taylor expanded in t around 0

      \[\leadsto \color{blue}{-1 \cdot \frac{x \cdot \left(y - z\right)}{z}} \]
   4. Step-by-step derivation

      1. mul-1-neg N/A

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

      2. neg-sub0 N/A

         \[\leadsto \color{blue}{0 - \frac{x \cdot \left(y - z\right)}{z}} \]

      3. associate-/l* N/A

         \[\leadsto 0 - \color{blue}{x \cdot \frac{y - z}{z}} \]

      4. div-sub N/A

         \[\leadsto 0 - x \cdot \color{blue}{\left(\frac{y}{z} - \frac{z}{z}\right)} \]

      5. sub-neg N/A

         \[\leadsto 0 - x \cdot \color{blue}{\left(\frac{y}{z} + \left(\mathsf{neg}\left(\frac{z}{z}\right)\right)\right)} \]

      6. *-inverses N/A

         \[\leadsto 0 - x \cdot \left(\frac{y}{z} + \left(\mathsf{neg}\left(\color{blue}{1}\right)\right)\right) \]

      7. metadata-eval N/A

         \[\leadsto 0 - x \cdot \left(\frac{y}{z} + \color{blue}{-1}\right) \]

      8. distribute-lft-out N/A

         \[\leadsto 0 - \color{blue}{\left(x \cdot \frac{y}{z} + x \cdot -1\right)} \]

      9. associate-/l* N/A

         \[\leadsto 0 - \left(\color{blue}{\frac{x \cdot y}{z}} + x \cdot -1\right) \]

      10. *-commutative N/A

          \[\leadsto 0 - \left(\frac{x \cdot y}{z} + \color{blue}{-1 \cdot x}\right) \]

      11. mul-1-neg N/A

          \[\leadsto 0 - \left(\frac{x \cdot y}{z} + \color{blue}{\left(\mathsf{neg}\left(x\right)\right)}\right) \]

      12. unsub-neg N/A

          \[\leadsto 0 - \color{blue}{\left(\frac{x \cdot y}{z} - x\right)} \]

      13. associate-+l- N/A

          \[\leadsto \color{blue}{\left(0 - \frac{x \cdot y}{z}\right) + x} \]

      14. neg-sub0 N/A

          \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\frac{x \cdot y}{z}\right)\right)} + x \]

      15. mul-1-neg N/A

          \[\leadsto \color{blue}{-1 \cdot \frac{x \cdot y}{z}} + x \]

      16. +-commutative N/A

          \[\leadsto \color{blue}{x + -1 \cdot \frac{x \cdot y}{z}} \]

      17. mul-1-neg N/A

          \[\leadsto x + \color{blue}{\left(\mathsf{neg}\left(\frac{x \cdot y}{z}\right)\right)} \]

      18. unsub-neg N/A

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

      19. lower--.f64 N/A

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

      20. lower-/.f64 N/A

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

      21. *-commutative N/A

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

      22. lower-*.f64 84.5

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

   5. Applied rewrites 84.5%

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

   if -4.7999999999999995e105 < z < -1.15e20 or 2.2999999999999999e-49 < z

   1. Initial program 77.5%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 99.8

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      3. lift-/.f64 N/A

         \[\leadsto x \cdot \color{blue}{\frac{y - z}{t - z}} \]

      4. clear-num N/A

         \[\leadsto x \cdot \color{blue}{\frac{1}{\frac{t - z}{y - z}}} \]

      5. un-div-inv N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      6. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      7. frac-2neg N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      8. lower-/.f64 N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      9. neg-sub0 N/A

         \[\leadsto \frac{x}{\frac{\color{blue}{0 - \left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      10. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      11. sub-neg N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t + \left(\mathsf{neg}\left(z\right)\right)\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      12. +-commutative N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + t\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      13. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      14. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      15. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      16. lower--.f64 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      17. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{0 - \left(y - z\right)}}} \]

      18. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y - z\right)}}} \]

      19. sub-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y + \left(\mathsf{neg}\left(z\right)\right)\right)}}} \]

      20. +-commutative N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + y\right)}}} \]

      21. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - y}}} \]

      22. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - y}} \]

      23. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z} - y}} \]

      24. lower--.f64 99.8

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z - y}}} \]

   6. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{x}{\frac{z - t}{z - y}}} \]

   7. Taylor expanded in y around 0

      \[\leadsto \color{blue}{\frac{x \cdot z}{z - t}} \]
   8. Step-by-step derivation

      1. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{z}{z - t}} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      3. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      4. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t}} \cdot x \]

      5. lower--.f64 78.9

         \[\leadsto \frac{z}{\color{blue}{z - t}} \cdot x \]

   9. Applied rewrites 78.9%

      \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

   if -1.15e20 < z < 2.2999999999999999e-49

   1. Initial program 94.8%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 93.7

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 93.7%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   5. Taylor expanded in y around inf

      \[\leadsto \color{blue}{\frac{y}{t - z}} \cdot x \]
   6. Step-by-step derivation

      1. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{y}{t - z}} \cdot x \]

      2. lower--.f64 81.4

         \[\leadsto \frac{y}{\color{blue}{t - z}} \cdot x \]

   7. Applied rewrites 81.4%

      \[\leadsto \color{blue}{\frac{y}{t - z}} \cdot x \]
3. Recombined 3 regimes into one program.

4. Final simplification 80.9%

   \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -4.8 \cdot 10^{+105}:\\ \;\;\;\;x - \frac{x \cdot y}{z}\\ \mathbf{elif}\;z \leq -1.15 \cdot 10^{+20}:\\ \;\;\;\;\frac{z}{z - t} \cdot x\\ \mathbf{elif}\;z \leq 2.3 \cdot 10^{-49}:\\ \;\;\;\;\frac{y}{t - z} \cdot x\\ \mathbf{else}:\\ \;\;\;\;\frac{z}{z - t} \cdot x\\ \end{array} \]
5. Add Preprocessing

Alternative 4: 73.9% accurate, 0.6× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{z}{z - t} \cdot x\\ \mathbf{if}\;z \leq -4.8 \cdot 10^{+105}:\\ \;\;\;\;x - \frac{x \cdot y}{z}\\ \mathbf{elif}\;z \leq -1.15 \cdot 10^{+20}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 2.3 \cdot 10^{-49}:\\ \;\;\;\;\frac{x}{t - z} \cdot y\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (/ z (- z t)) x)))
   (if (<= z -4.8e+105)
     (- x (/ (* x y) z))
     (if (<= z -1.15e+20) t_1 (if (<= z 2.3e-49) (* (/ x (- t z)) y) t_1)))))

C

double code(double x, double y, double z, double t) {
	double t_1 = (z / (z - t)) * x;
	double tmp;
	if (z <= -4.8e+105) {
		tmp = x - ((x * y) / z);
	} else if (z <= -1.15e+20) {
		tmp = t_1;
	} else if (z <= 2.3e-49) {
		tmp = (x / (t - z)) * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (z / (z - t)) * x
    if (z <= (-4.8d+105)) then
        tmp = x - ((x * y) / z)
    else if (z <= (-1.15d+20)) then
        tmp = t_1
    else if (z <= 2.3d-49) then
        tmp = (x / (t - z)) * y
    else
        tmp = t_1
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z, double t) {
	double t_1 = (z / (z - t)) * x;
	double tmp;
	if (z <= -4.8e+105) {
		tmp = x - ((x * y) / z);
	} else if (z <= -1.15e+20) {
		tmp = t_1;
	} else if (z <= 2.3e-49) {
		tmp = (x / (t - z)) * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	t_1 = (z / (z - t)) * x
	tmp = 0
	if z <= -4.8e+105:
		tmp = x - ((x * y) / z)
	elif z <= -1.15e+20:
		tmp = t_1
	elif z <= 2.3e-49:
		tmp = (x / (t - z)) * y
	else:
		tmp = t_1
	return tmp

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(z / Float64(z - t)) * x)
	tmp = 0.0
	if (z <= -4.8e+105)
		tmp = Float64(x - Float64(Float64(x * y) / z));
	elseif (z <= -1.15e+20)
		tmp = t_1;
	elseif (z <= 2.3e-49)
		tmp = Float64(Float64(x / Float64(t - z)) * y);
	else
		tmp = t_1;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	t_1 = (z / (z - t)) * x;
	tmp = 0.0;
	if (z <= -4.8e+105)
		tmp = x - ((x * y) / z);
	elseif (z <= -1.15e+20)
		tmp = t_1;
	elseif (z <= 2.3e-49)
		tmp = (x / (t - z)) * y;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(z / N[(z - t), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision]}, If[LessEqual[z, -4.8e+105], N[(x - N[(N[(x * y), $MachinePrecision] / z), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, -1.15e+20], t$95$1, If[LessEqual[z, 2.3e-49], N[(N[(x / N[(t - z), $MachinePrecision]), $MachinePrecision] * y), $MachinePrecision], t$95$1]]]]

Derivation

1. Split input into 3 regimes

2. if z < -4.7999999999999995e105

   1. Initial program 71.0%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing

   3. Taylor expanded in t around 0

      \[\leadsto \color{blue}{-1 \cdot \frac{x \cdot \left(y - z\right)}{z}} \]
   4. Step-by-step derivation

      1. mul-1-neg N/A

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

      2. neg-sub0 N/A

         \[\leadsto \color{blue}{0 - \frac{x \cdot \left(y - z\right)}{z}} \]

      3. associate-/l* N/A

         \[\leadsto 0 - \color{blue}{x \cdot \frac{y - z}{z}} \]

      4. div-sub N/A

         \[\leadsto 0 - x \cdot \color{blue}{\left(\frac{y}{z} - \frac{z}{z}\right)} \]

      5. sub-neg N/A

         \[\leadsto 0 - x \cdot \color{blue}{\left(\frac{y}{z} + \left(\mathsf{neg}\left(\frac{z}{z}\right)\right)\right)} \]

      6. *-inverses N/A

         \[\leadsto 0 - x \cdot \left(\frac{y}{z} + \left(\mathsf{neg}\left(\color{blue}{1}\right)\right)\right) \]

      7. metadata-eval N/A

         \[\leadsto 0 - x \cdot \left(\frac{y}{z} + \color{blue}{-1}\right) \]

      8. distribute-lft-out N/A

         \[\leadsto 0 - \color{blue}{\left(x \cdot \frac{y}{z} + x \cdot -1\right)} \]

      9. associate-/l* N/A

         \[\leadsto 0 - \left(\color{blue}{\frac{x \cdot y}{z}} + x \cdot -1\right) \]

      10. *-commutative N/A

          \[\leadsto 0 - \left(\frac{x \cdot y}{z} + \color{blue}{-1 \cdot x}\right) \]

      11. mul-1-neg N/A

          \[\leadsto 0 - \left(\frac{x \cdot y}{z} + \color{blue}{\left(\mathsf{neg}\left(x\right)\right)}\right) \]

      12. unsub-neg N/A

          \[\leadsto 0 - \color{blue}{\left(\frac{x \cdot y}{z} - x\right)} \]

      13. associate-+l- N/A

          \[\leadsto \color{blue}{\left(0 - \frac{x \cdot y}{z}\right) + x} \]

      14. neg-sub0 N/A

          \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\frac{x \cdot y}{z}\right)\right)} + x \]

      15. mul-1-neg N/A

          \[\leadsto \color{blue}{-1 \cdot \frac{x \cdot y}{z}} + x \]

      16. +-commutative N/A

          \[\leadsto \color{blue}{x + -1 \cdot \frac{x \cdot y}{z}} \]

      17. mul-1-neg N/A

          \[\leadsto x + \color{blue}{\left(\mathsf{neg}\left(\frac{x \cdot y}{z}\right)\right)} \]

      18. unsub-neg N/A

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

      19. lower--.f64 N/A

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

      20. lower-/.f64 N/A

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

      21. *-commutative N/A

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

      22. lower-*.f64 84.5

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

   5. Applied rewrites 84.5%

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

   if -4.7999999999999995e105 < z < -1.15e20 or 2.2999999999999999e-49 < z

   1. Initial program 77.5%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 99.8

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      3. lift-/.f64 N/A

         \[\leadsto x \cdot \color{blue}{\frac{y - z}{t - z}} \]

      4. clear-num N/A

         \[\leadsto x \cdot \color{blue}{\frac{1}{\frac{t - z}{y - z}}} \]

      5. un-div-inv N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      6. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      7. frac-2neg N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      8. lower-/.f64 N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      9. neg-sub0 N/A

         \[\leadsto \frac{x}{\frac{\color{blue}{0 - \left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      10. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      11. sub-neg N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t + \left(\mathsf{neg}\left(z\right)\right)\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      12. +-commutative N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + t\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      13. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      14. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      15. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      16. lower--.f64 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      17. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{0 - \left(y - z\right)}}} \]

      18. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y - z\right)}}} \]

      19. sub-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y + \left(\mathsf{neg}\left(z\right)\right)\right)}}} \]

      20. +-commutative N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + y\right)}}} \]

      21. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - y}}} \]

      22. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - y}} \]

      23. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z} - y}} \]

      24. lower--.f64 99.8

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z - y}}} \]

   6. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{x}{\frac{z - t}{z - y}}} \]

   7. Taylor expanded in y around 0

      \[\leadsto \color{blue}{\frac{x \cdot z}{z - t}} \]
   8. Step-by-step derivation

      1. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{z}{z - t}} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      3. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      4. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t}} \cdot x \]

      5. lower--.f64 78.9

         \[\leadsto \frac{z}{\color{blue}{z - t}} \cdot x \]

   9. Applied rewrites 78.9%

      \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

   if -1.15e20 < z < 2.2999999999999999e-49

   1. Initial program 94.8%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing

   3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{\frac{x \cdot y}{t - z}} \]
   4. Step-by-step derivation

      1. associate-*l/ N/A

         \[\leadsto \color{blue}{\frac{x}{t - z} \cdot y} \]

      2. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{x}{t - z} \cdot y} \]

      3. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{x}{t - z}} \cdot y \]

      4. lower--.f64 78.7

         \[\leadsto \frac{x}{\color{blue}{t - z}} \cdot y \]

   5. Applied rewrites 78.7%

      \[\leadsto \color{blue}{\frac{x}{t - z} \cdot y} \]
3. Recombined 3 regimes into one program.

4. Final simplification 79.6%

   \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -4.8 \cdot 10^{+105}:\\ \;\;\;\;x - \frac{x \cdot y}{z}\\ \mathbf{elif}\;z \leq -1.15 \cdot 10^{+20}:\\ \;\;\;\;\frac{z}{z - t} \cdot x\\ \mathbf{elif}\;z \leq 2.3 \cdot 10^{-49}:\\ \;\;\;\;\frac{x}{t - z} \cdot y\\ \mathbf{else}:\\ \;\;\;\;\frac{z}{z - t} \cdot x\\ \end{array} \]
5. Add Preprocessing

Alternative 5: 90.4% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -1.16 \cdot 10^{+160}:\\ \;\;\;\;\frac{y - z}{-z} \cdot x\\ \mathbf{elif}\;z \leq 1.02 \cdot 10^{+154}:\\ \;\;\;\;\frac{x}{t - z} \cdot \left(y - z\right)\\ \mathbf{else}:\\ \;\;\;\;\frac{z}{z - t} \cdot x\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (if (<= z -1.16e+160)
   (* (/ (- y z) (- z)) x)
   (if (<= z 1.02e+154) (* (/ x (- t z)) (- y z)) (* (/ z (- z t)) x))))

C

double code(double x, double y, double z, double t) {
	double tmp;
	if (z <= -1.16e+160) {
		tmp = ((y - z) / -z) * x;
	} else if (z <= 1.02e+154) {
		tmp = (x / (t - z)) * (y - z);
	} else {
		tmp = (z / (z - t)) * x;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: tmp
    if (z <= (-1.16d+160)) then
        tmp = ((y - z) / -z) * x
    else if (z <= 1.02d+154) then
        tmp = (x / (t - z)) * (y - z)
    else
        tmp = (z / (z - t)) * x
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z, double t) {
	double tmp;
	if (z <= -1.16e+160) {
		tmp = ((y - z) / -z) * x;
	} else if (z <= 1.02e+154) {
		tmp = (x / (t - z)) * (y - z);
	} else {
		tmp = (z / (z - t)) * x;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	tmp = 0
	if z <= -1.16e+160:
		tmp = ((y - z) / -z) * x
	elif z <= 1.02e+154:
		tmp = (x / (t - z)) * (y - z)
	else:
		tmp = (z / (z - t)) * x
	return tmp

Julia

function code(x, y, z, t)
	tmp = 0.0
	if (z <= -1.16e+160)
		tmp = Float64(Float64(Float64(y - z) / Float64(-z)) * x);
	elseif (z <= 1.02e+154)
		tmp = Float64(Float64(x / Float64(t - z)) * Float64(y - z));
	else
		tmp = Float64(Float64(z / Float64(z - t)) * x);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	tmp = 0.0;
	if (z <= -1.16e+160)
		tmp = ((y - z) / -z) * x;
	elseif (z <= 1.02e+154)
		tmp = (x / (t - z)) * (y - z);
	else
		tmp = (z / (z - t)) * x;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := If[LessEqual[z, -1.16e+160], N[(N[(N[(y - z), $MachinePrecision] / (-z)), $MachinePrecision] * x), $MachinePrecision], If[LessEqual[z, 1.02e+154], N[(N[(x / N[(t - z), $MachinePrecision]), $MachinePrecision] * N[(y - z), $MachinePrecision]), $MachinePrecision], N[(N[(z / N[(z - t), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision]]]

Derivation

1. Split input into 3 regimes

2. if z < -1.16000000000000006e160

   1. Initial program 72.3%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 99.8

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   5. Taylor expanded in t around 0

      \[\leadsto \frac{y - z}{\color{blue}{-1 \cdot z}} \cdot x \]
   6. Step-by-step derivation

      1. mul-1-neg N/A

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

      2. lower-neg.f64 92.1

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

   7. Applied rewrites 92.1%

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

   if -1.16000000000000006e160 < z < 1.02000000000000007e154

   1. Initial program 91.4%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. *-commutative N/A

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

      4. associate-/l* N/A

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

      5. *-commutative N/A

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

      6. lower-*.f64 N/A

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

      7. lower-/.f64 91.3

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

   4. Applied rewrites 91.3%

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

   if 1.02000000000000007e154 < z

   1. Initial program 54.6%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 99.9

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 99.9%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      3. lift-/.f64 N/A

         \[\leadsto x \cdot \color{blue}{\frac{y - z}{t - z}} \]

      4. clear-num N/A

         \[\leadsto x \cdot \color{blue}{\frac{1}{\frac{t - z}{y - z}}} \]

      5. un-div-inv N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      6. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      7. frac-2neg N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      8. lower-/.f64 N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      9. neg-sub0 N/A

         \[\leadsto \frac{x}{\frac{\color{blue}{0 - \left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      10. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      11. sub-neg N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t + \left(\mathsf{neg}\left(z\right)\right)\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      12. +-commutative N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + t\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      13. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      14. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      15. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      16. lower--.f64 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      17. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{0 - \left(y - z\right)}}} \]

      18. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y - z\right)}}} \]

      19. sub-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y + \left(\mathsf{neg}\left(z\right)\right)\right)}}} \]

      20. +-commutative N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + y\right)}}} \]

      21. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - y}}} \]

      22. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - y}} \]

      23. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z} - y}} \]

      24. lower--.f64 100.0

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z - y}}} \]

   6. Applied rewrites 100.0%

      \[\leadsto \color{blue}{\frac{x}{\frac{z - t}{z - y}}} \]

   7. Taylor expanded in y around 0

      \[\leadsto \color{blue}{\frac{x \cdot z}{z - t}} \]
   8. Step-by-step derivation

      1. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{z}{z - t}} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      3. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      4. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t}} \cdot x \]

      5. lower--.f64 99.9

         \[\leadsto \frac{z}{\color{blue}{z - t}} \cdot x \]

   9. Applied rewrites 99.9%

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

Alternative 6: 75.2% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{z}{z - t} \cdot x\\ \mathbf{if}\;z \leq -1.15 \cdot 10^{+20}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 2.3 \cdot 10^{-49}:\\ \;\;\;\;\frac{x}{t - z} \cdot y\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (/ z (- z t)) x)))
   (if (<= z -1.15e+20) t_1 (if (<= z 2.3e-49) (* (/ x (- t z)) y) t_1))))

C

double code(double x, double y, double z, double t) {
	double t_1 = (z / (z - t)) * x;
	double tmp;
	if (z <= -1.15e+20) {
		tmp = t_1;
	} else if (z <= 2.3e-49) {
		tmp = (x / (t - z)) * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (z / (z - t)) * x
    if (z <= (-1.15d+20)) then
        tmp = t_1
    else if (z <= 2.3d-49) then
        tmp = (x / (t - z)) * y
    else
        tmp = t_1
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z, double t) {
	double t_1 = (z / (z - t)) * x;
	double tmp;
	if (z <= -1.15e+20) {
		tmp = t_1;
	} else if (z <= 2.3e-49) {
		tmp = (x / (t - z)) * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	t_1 = (z / (z - t)) * x
	tmp = 0
	if z <= -1.15e+20:
		tmp = t_1
	elif z <= 2.3e-49:
		tmp = (x / (t - z)) * y
	else:
		tmp = t_1
	return tmp

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(z / Float64(z - t)) * x)
	tmp = 0.0
	if (z <= -1.15e+20)
		tmp = t_1;
	elseif (z <= 2.3e-49)
		tmp = Float64(Float64(x / Float64(t - z)) * y);
	else
		tmp = t_1;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	t_1 = (z / (z - t)) * x;
	tmp = 0.0;
	if (z <= -1.15e+20)
		tmp = t_1;
	elseif (z <= 2.3e-49)
		tmp = (x / (t - z)) * y;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(z / N[(z - t), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision]}, If[LessEqual[z, -1.15e+20], t$95$1, If[LessEqual[z, 2.3e-49], N[(N[(x / N[(t - z), $MachinePrecision]), $MachinePrecision] * y), $MachinePrecision], t$95$1]]]

Derivation

1. Split input into 2 regimes

2. if z < -1.15e20 or 2.2999999999999999e-49 < z

   1. Initial program 75.7%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 99.8

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      3. lift-/.f64 N/A

         \[\leadsto x \cdot \color{blue}{\frac{y - z}{t - z}} \]

      4. clear-num N/A

         \[\leadsto x \cdot \color{blue}{\frac{1}{\frac{t - z}{y - z}}} \]

      5. un-div-inv N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      6. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      7. frac-2neg N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      8. lower-/.f64 N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      9. neg-sub0 N/A

         \[\leadsto \frac{x}{\frac{\color{blue}{0 - \left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      10. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      11. sub-neg N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t + \left(\mathsf{neg}\left(z\right)\right)\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      12. +-commutative N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + t\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      13. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      14. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      15. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      16. lower--.f64 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      17. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{0 - \left(y - z\right)}}} \]

      18. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y - z\right)}}} \]

      19. sub-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y + \left(\mathsf{neg}\left(z\right)\right)\right)}}} \]

      20. +-commutative N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + y\right)}}} \]

      21. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - y}}} \]

      22. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - y}} \]

      23. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z} - y}} \]

      24. lower--.f64 99.8

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z - y}}} \]

   6. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{x}{\frac{z - t}{z - y}}} \]

   7. Taylor expanded in y around 0

      \[\leadsto \color{blue}{\frac{x \cdot z}{z - t}} \]
   8. Step-by-step derivation

      1. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{z}{z - t}} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      3. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      4. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t}} \cdot x \]

      5. lower--.f64 75.8

         \[\leadsto \frac{z}{\color{blue}{z - t}} \cdot x \]

   9. Applied rewrites 75.8%

      \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

   if -1.15e20 < z < 2.2999999999999999e-49

   1. Initial program 94.8%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing

   3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{\frac{x \cdot y}{t - z}} \]
   4. Step-by-step derivation

      1. associate-*l/ N/A

         \[\leadsto \color{blue}{\frac{x}{t - z} \cdot y} \]

      2. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{x}{t - z} \cdot y} \]

      3. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{x}{t - z}} \cdot y \]

      4. lower--.f64 78.7

         \[\leadsto \frac{x}{\color{blue}{t - z}} \cdot y \]

   5. Applied rewrites 78.7%

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

Alternative 7: 69.6% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{z}{z - t} \cdot x\\ \mathbf{if}\;z \leq -3.35 \cdot 10^{+19}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 7 \cdot 10^{-50}:\\ \;\;\;\;\frac{y}{t} \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (/ z (- z t)) x)))
   (if (<= z -3.35e+19) t_1 (if (<= z 7e-50) (* (/ y t) x) t_1))))

C

double code(double x, double y, double z, double t) {
	double t_1 = (z / (z - t)) * x;
	double tmp;
	if (z <= -3.35e+19) {
		tmp = t_1;
	} else if (z <= 7e-50) {
		tmp = (y / t) * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (z / (z - t)) * x
    if (z <= (-3.35d+19)) then
        tmp = t_1
    else if (z <= 7d-50) then
        tmp = (y / t) * x
    else
        tmp = t_1
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z, double t) {
	double t_1 = (z / (z - t)) * x;
	double tmp;
	if (z <= -3.35e+19) {
		tmp = t_1;
	} else if (z <= 7e-50) {
		tmp = (y / t) * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	t_1 = (z / (z - t)) * x
	tmp = 0
	if z <= -3.35e+19:
		tmp = t_1
	elif z <= 7e-50:
		tmp = (y / t) * x
	else:
		tmp = t_1
	return tmp

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(z / Float64(z - t)) * x)
	tmp = 0.0
	if (z <= -3.35e+19)
		tmp = t_1;
	elseif (z <= 7e-50)
		tmp = Float64(Float64(y / t) * x);
	else
		tmp = t_1;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	t_1 = (z / (z - t)) * x;
	tmp = 0.0;
	if (z <= -3.35e+19)
		tmp = t_1;
	elseif (z <= 7e-50)
		tmp = (y / t) * x;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(z / N[(z - t), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision]}, If[LessEqual[z, -3.35e+19], t$95$1, If[LessEqual[z, 7e-50], N[(N[(y / t), $MachinePrecision] * x), $MachinePrecision], t$95$1]]]

Derivation

1. Split input into 2 regimes

2. if z < -3.35e19 or 6.99999999999999993e-50 < z

   1. Initial program 75.7%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 99.8

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]
   5. Step-by-step derivation

      1. lift-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      3. lift-/.f64 N/A

         \[\leadsto x \cdot \color{blue}{\frac{y - z}{t - z}} \]

      4. clear-num N/A

         \[\leadsto x \cdot \color{blue}{\frac{1}{\frac{t - z}{y - z}}} \]

      5. un-div-inv N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      6. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{x}{\frac{t - z}{y - z}}} \]

      7. frac-2neg N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      8. lower-/.f64 N/A

         \[\leadsto \frac{x}{\color{blue}{\frac{\mathsf{neg}\left(\left(t - z\right)\right)}{\mathsf{neg}\left(\left(y - z\right)\right)}}} \]

      9. neg-sub0 N/A

         \[\leadsto \frac{x}{\frac{\color{blue}{0 - \left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      10. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t - z\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      11. sub-neg N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(t + \left(\mathsf{neg}\left(z\right)\right)\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      12. +-commutative N/A

          \[\leadsto \frac{x}{\frac{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + t\right)}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      13. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      14. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      15. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z} - t}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      16. lower--.f64 N/A

          \[\leadsto \frac{x}{\frac{\color{blue}{z - t}}{\mathsf{neg}\left(\left(y - z\right)\right)}} \]

      17. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{0 - \left(y - z\right)}}} \]

      18. lift--.f64 N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y - z\right)}}} \]

      19. sub-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(y + \left(\mathsf{neg}\left(z\right)\right)\right)}}} \]

      20. +-commutative N/A

          \[\leadsto \frac{x}{\frac{z - t}{0 - \color{blue}{\left(\left(\mathsf{neg}\left(z\right)\right) + y\right)}}} \]

      21. associate--r+ N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(0 - \left(\mathsf{neg}\left(z\right)\right)\right) - y}}} \]

      22. neg-sub0 N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(z\right)\right)\right)\right)} - y}} \]

      23. remove-double-neg N/A

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z} - y}} \]

      24. lower--.f64 99.8

          \[\leadsto \frac{x}{\frac{z - t}{\color{blue}{z - y}}} \]

   6. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{x}{\frac{z - t}{z - y}}} \]

   7. Taylor expanded in y around 0

      \[\leadsto \color{blue}{\frac{x \cdot z}{z - t}} \]
   8. Step-by-step derivation

      1. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{z}{z - t}} \]

      2. *-commutative N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      3. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

      4. lower-/.f64 N/A

         \[\leadsto \color{blue}{\frac{z}{z - t}} \cdot x \]

      5. lower--.f64 75.8

         \[\leadsto \frac{z}{\color{blue}{z - t}} \cdot x \]

   9. Applied rewrites 75.8%

      \[\leadsto \color{blue}{\frac{z}{z - t} \cdot x} \]

   if -3.35e19 < z < 6.99999999999999993e-50

   1. Initial program 94.8%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 93.7

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 93.7%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   5. Taylor expanded in z around 0

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

      1. lower-/.f64 66.0

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

   7. Applied rewrites 66.0%

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

Alternative 8: 61.6% accurate, 0.8× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -2.15 \cdot 10^{+20}:\\ \;\;\;\;1 \cdot x\\ \mathbf{elif}\;z \leq 8.5 \cdot 10^{-17}:\\ \;\;\;\;\frac{y}{t} \cdot x\\ \mathbf{else}:\\ \;\;\;\;1 \cdot x\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (if (<= z -2.15e+20) (* 1.0 x) (if (<= z 8.5e-17) (* (/ y t) x) (* 1.0 x))))

C

double code(double x, double y, double z, double t) {
	double tmp;
	if (z <= -2.15e+20) {
		tmp = 1.0 * x;
	} else if (z <= 8.5e-17) {
		tmp = (y / t) * x;
	} else {
		tmp = 1.0 * x;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: tmp
    if (z <= (-2.15d+20)) then
        tmp = 1.0d0 * x
    else if (z <= 8.5d-17) then
        tmp = (y / t) * x
    else
        tmp = 1.0d0 * x
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z, double t) {
	double tmp;
	if (z <= -2.15e+20) {
		tmp = 1.0 * x;
	} else if (z <= 8.5e-17) {
		tmp = (y / t) * x;
	} else {
		tmp = 1.0 * x;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	tmp = 0
	if z <= -2.15e+20:
		tmp = 1.0 * x
	elif z <= 8.5e-17:
		tmp = (y / t) * x
	else:
		tmp = 1.0 * x
	return tmp

Julia

function code(x, y, z, t)
	tmp = 0.0
	if (z <= -2.15e+20)
		tmp = Float64(1.0 * x);
	elseif (z <= 8.5e-17)
		tmp = Float64(Float64(y / t) * x);
	else
		tmp = Float64(1.0 * x);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	tmp = 0.0;
	if (z <= -2.15e+20)
		tmp = 1.0 * x;
	elseif (z <= 8.5e-17)
		tmp = (y / t) * x;
	else
		tmp = 1.0 * x;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := If[LessEqual[z, -2.15e+20], N[(1.0 * x), $MachinePrecision], If[LessEqual[z, 8.5e-17], N[(N[(y / t), $MachinePrecision] * x), $MachinePrecision], N[(1.0 * x), $MachinePrecision]]]

Derivation

1. Split input into 2 regimes

2. if z < -2.15e20 or 8.5e-17 < z

   1. Initial program 74.5%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 99.8

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   5. Taylor expanded in z around inf

      \[\leadsto \color{blue}{1} \cdot x \]
   6. Step-by-step derivation

   7. Applied rewrites 55.0%

      \[\leadsto \color{blue}{1} \cdot x \]

   if -2.15e20 < z < 8.5e-17

   1. Initial program 94.9%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 94.0

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 94.0%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   5. Taylor expanded in z around 0

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

      1. lower-/.f64 64.9

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

   7. Applied rewrites 64.9%

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

Alternative 9: 60.6% accurate, 0.8× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -1.25 \cdot 10^{+20}:\\ \;\;\;\;1 \cdot x\\ \mathbf{elif}\;z \leq 5.4 \cdot 10^{-28}:\\ \;\;\;\;\frac{x}{t} \cdot y\\ \mathbf{else}:\\ \;\;\;\;1 \cdot x\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (if (<= z -1.25e+20) (* 1.0 x) (if (<= z 5.4e-28) (* (/ x t) y) (* 1.0 x))))

C

double code(double x, double y, double z, double t) {
	double tmp;
	if (z <= -1.25e+20) {
		tmp = 1.0 * x;
	} else if (z <= 5.4e-28) {
		tmp = (x / t) * y;
	} else {
		tmp = 1.0 * x;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: tmp
    if (z <= (-1.25d+20)) then
        tmp = 1.0d0 * x
    else if (z <= 5.4d-28) then
        tmp = (x / t) * y
    else
        tmp = 1.0d0 * x
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z, double t) {
	double tmp;
	if (z <= -1.25e+20) {
		tmp = 1.0 * x;
	} else if (z <= 5.4e-28) {
		tmp = (x / t) * y;
	} else {
		tmp = 1.0 * x;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	tmp = 0
	if z <= -1.25e+20:
		tmp = 1.0 * x
	elif z <= 5.4e-28:
		tmp = (x / t) * y
	else:
		tmp = 1.0 * x
	return tmp

Julia

function code(x, y, z, t)
	tmp = 0.0
	if (z <= -1.25e+20)
		tmp = Float64(1.0 * x);
	elseif (z <= 5.4e-28)
		tmp = Float64(Float64(x / t) * y);
	else
		tmp = Float64(1.0 * x);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	tmp = 0.0;
	if (z <= -1.25e+20)
		tmp = 1.0 * x;
	elseif (z <= 5.4e-28)
		tmp = (x / t) * y;
	else
		tmp = 1.0 * x;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := If[LessEqual[z, -1.25e+20], N[(1.0 * x), $MachinePrecision], If[LessEqual[z, 5.4e-28], N[(N[(x / t), $MachinePrecision] * y), $MachinePrecision], N[(1.0 * x), $MachinePrecision]]]

Derivation

1. Split input into 2 regimes

2. if z < -1.25e20 or 5.3999999999999998e-28 < z

   1. Initial program 75.0%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-/.f64 N/A

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

      2. lift-*.f64 N/A

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

      3. associate-/l* N/A

         \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

      4. *-commutative N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      5. lower-*.f64 N/A

         \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

      6. lower-/.f64 99.8

         \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

   4. Applied rewrites 99.8%

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   5. Taylor expanded in z around inf

      \[\leadsto \color{blue}{1} \cdot x \]
   6. Step-by-step derivation

   7. Applied rewrites 54.6%

      \[\leadsto \color{blue}{1} \cdot x \]

   if -1.25e20 < z < 5.3999999999999998e-28

   1. Initial program 94.9%

      \[\frac{x \cdot \left(y - z\right)}{t - z} \]
   2. Add Preprocessing

   3. Taylor expanded in z around 0

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

      1. lower-/.f64 N/A

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

      2. *-commutative N/A

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

      3. lower-*.f64 64.5

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

   5. Applied rewrites 64.5%

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

   7. Applied rewrites 64.8%

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

Alternative 10: 34.5% accurate, 3.8× speedup

Math

\[\begin{array}{l} \\ 1 \cdot x \end{array} \]

FPCore

(FPCore (x y z t) :precision binary64 (* 1.0 x))

C

double code(double x, double y, double z, double t) {
	return 1.0 * x;
}

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    code = 1.0d0 * x
end function

Java

public static double code(double x, double y, double z, double t) {
	return 1.0 * x;
}

Python

def code(x, y, z, t):
	return 1.0 * x

Julia

function code(x, y, z, t)
	return Float64(1.0 * x)
end

MATLAB

function tmp = code(x, y, z, t)
	tmp = 1.0 * x;
end

Wolfram

code[x_, y_, z_, t_] := N[(1.0 * x), $MachinePrecision]

Derivation

1. Initial program 84.9%

   \[\frac{x \cdot \left(y - z\right)}{t - z} \]
2. Add Preprocessing
3. Step-by-step derivation

   1. lift-/.f64 N/A

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

   2. lift-*.f64 N/A

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

   3. associate-/l* N/A

      \[\leadsto \color{blue}{x \cdot \frac{y - z}{t - z}} \]

   4. *-commutative N/A

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   5. lower-*.f64 N/A

      \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

   6. lower-/.f64 96.9

      \[\leadsto \color{blue}{\frac{y - z}{t - z}} \cdot x \]

4. Applied rewrites 96.9%

   \[\leadsto \color{blue}{\frac{y - z}{t - z} \cdot x} \]

5. Taylor expanded in z around inf

   \[\leadsto \color{blue}{1} \cdot x \]
6. Step-by-step derivation

7. Applied rewrites 32.8%

   \[\leadsto \color{blue}{1} \cdot x \]
8. Add Preprocessing

Developer Target 1: 97.1% accurate, 0.8× speedup

Math

\[\begin{array}{l} \\ \frac{x}{\frac{t - z}{y - z}} \end{array} \]

FPCore

(FPCore (x y z t) :precision binary64 (/ x (/ (- t z) (- y z))))

C

double code(double x, double y, double z, double t) {
	return x / ((t - z) / (y - z));
}

Fortran

real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    code = x / ((t - z) / (y - z))
end function

Java

public static double code(double x, double y, double z, double t) {
	return x / ((t - z) / (y - z));
}

Python

def code(x, y, z, t):
	return x / ((t - z) / (y - z))

Julia

function code(x, y, z, t)
	return Float64(x / Float64(Float64(t - z) / Float64(y - z)))
end

MATLAB

function tmp = code(x, y, z, t)
	tmp = x / ((t - z) / (y - z));
end

Wolfram

code[x_, y_, z_, t_] := N[(x / N[(N[(t - z), $MachinePrecision] / N[(y - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Reproduce

herbie shell --seed 2024235 
(FPCore (x y z t)
  :name "Graphics.Rendering.Chart.Plot.AreaSpots:renderAreaSpots4D from Chart-1.5.3"
  :precision binary64

  :alt
  (! :herbie-platform default (/ x (/ (- t z) (- y z))))

  (/ (* x (- y z)) (- t z)))