Data.Metrics.Snapshot:quantile from metrics-0.3.0.2

Percentage Accurate: 100.0% → 100.0%

Time: 3.6s

Alternatives: 12

Speedup: 1.1×

• 34.6% of points produce a very large (infinite) output. You may want to add a precondition.

Specification

Math

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

FPCore

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

C

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

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

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

real(8) function code(x, y, z, t)
use fmin_fmax_functions
    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 - x))
end function

Java

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

Python

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

Julia

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

MATLAB

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

Wolfram

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

Initial Program: 100.0% accurate, 1.0× speedup

Math

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

FPCore

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

C

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

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

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

real(8) function code(x, y, z, t)
use fmin_fmax_functions
    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 - x))
end function

Java

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

Python

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

Julia

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

MATLAB

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

Wolfram

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

Alternative 1: 100.0% accurate, 1.1× speedup

Math

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

FPCore

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

C

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

Julia

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

Wolfram

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

Derivation

1. Initial program 100.0%

   \[x + \left(y - z\right) \cdot \left(t - x\right) \]
2. Step-by-step derivation

   1. lift-+.f64 N/A

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

   2. lift-*.f64 N/A

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

   3. lift--.f64 N/A

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

   4. lift--.f64 N/A

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

   5. +-commutative N/A

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

   6. lower-fma.f64 N/A

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

   7. lift--.f64 N/A

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

   8. lift--.f64 100.0

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

3. Applied rewrites 100.0%

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

Alternative 2: 83.7% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -165000:\\ \;\;\;\;\left(x - t\right) \cdot z\\ \mathbf{elif}\;z \leq 5 \cdot 10^{-14}:\\ \;\;\;\;\mathsf{fma}\left(t - x, y, x\right)\\ \mathbf{else}:\\ \;\;\;\;x - \left(t - x\right) \cdot z\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (if (<= z -165000.0)
   (* (- x t) z)
   (if (<= z 5e-14) (fma (- t x) y x) (- x (* (- t x) z)))))

C

double code(double x, double y, double z, double t) {
	double tmp;
	if (z <= -165000.0) {
		tmp = (x - t) * z;
	} else if (z <= 5e-14) {
		tmp = fma((t - x), y, x);
	} else {
		tmp = x - ((t - x) * z);
	}
	return tmp;
}

Julia

function code(x, y, z, t)
	tmp = 0.0
	if (z <= -165000.0)
		tmp = Float64(Float64(x - t) * z);
	elseif (z <= 5e-14)
		tmp = fma(Float64(t - x), y, x);
	else
		tmp = Float64(x - Float64(Float64(t - x) * z));
	end
	return tmp
end

Wolfram

code[x_, y_, z_, t_] := If[LessEqual[z, -165000.0], N[(N[(x - t), $MachinePrecision] * z), $MachinePrecision], If[LessEqual[z, 5e-14], N[(N[(t - x), $MachinePrecision] * y + x), $MachinePrecision], N[(x - N[(N[(t - x), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]]]

Derivation

1. Split input into 3 regimes

2. if z < -165000

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around 0

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

      1. associate-+r+ N/A

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

      2. *-commutative N/A

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

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

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

      4. mul-1-neg N/A

         \[\leadsto \left(x + -1 \cdot \left(z \cdot \left(t - x\right)\right)\right) - \left(-1 \cdot \left(t - x\right)\right) \cdot y \]

      5. lower--.f64 N/A

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

      6. mul-1-neg N/A

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

      7. sub-flip-reverse N/A

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

      8. lower--.f64 N/A

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

      9. *-commutative N/A

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

      10. lower-*.f64 N/A

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

      11. lift--.f64 N/A

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

      12. lower-*.f64 N/A

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

      13. mul-1-neg N/A

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

      14. sub-negate-rev N/A

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

      15. lower--.f64 96.4

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

   4. Applied rewrites 96.4%

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

   5. Taylor expanded in z around inf

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

      1. sub-negate-rev N/A

         \[\leadsto z \cdot \left(\mathsf{neg}\left(\left(t - x\right)\right)\right) \]

      2. mul-1-neg N/A

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

      3. *-commutative N/A

         \[\leadsto \left(-1 \cdot \left(t - x\right)\right) \cdot z \]

      4. lower-*.f64 N/A

         \[\leadsto \left(-1 \cdot \left(t - x\right)\right) \cdot z \]

      5. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(\left(t - x\right)\right)\right) \cdot z \]

      6. sub-negate-rev N/A

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

      7. lift--.f64 45.0

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

   7. Applied rewrites 45.0%

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

   if -165000 < z < 5.0000000000000002e-14

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in z around 0

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

      1. +-commutative N/A

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

      2. *-commutative N/A

         \[\leadsto \left(t - x\right) \cdot y + x \]

      3. lower-fma.f64 N/A

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

      4. lift--.f64 60.2

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

   4. Applied rewrites 60.2%

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

   if 5.0000000000000002e-14 < z

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around 0

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

      1. mul-1-neg N/A

         \[\leadsto x + \left(\mathsf{neg}\left(z \cdot \left(t - x\right)\right)\right) \]

      2. sub-flip-reverse N/A

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

      3. lower--.f64 N/A

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

      4. *-commutative N/A

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

      5. lower-*.f64 N/A

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

      6. lift--.f64 60.5

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

   4. Applied rewrites 60.5%

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

Alternative 3: 83.3% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(x - t\right) \cdot z\\ \mathbf{if}\;z \leq -165000:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 5.2 \cdot 10^{-14}:\\ \;\;\;\;\mathsf{fma}\left(t - x, y, x\right)\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (- x t) z)))
   (if (<= z -165000.0) t_1 (if (<= z 5.2e-14) (fma (- t x) y x) t_1))))

C

double code(double x, double y, double z, double t) {
	double t_1 = (x - t) * z;
	double tmp;
	if (z <= -165000.0) {
		tmp = t_1;
	} else if (z <= 5.2e-14) {
		tmp = fma((t - x), y, x);
	} else {
		tmp = t_1;
	}
	return tmp;
}

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(x - t) * z)
	tmp = 0.0
	if (z <= -165000.0)
		tmp = t_1;
	elseif (z <= 5.2e-14)
		tmp = fma(Float64(t - x), y, x);
	else
		tmp = t_1;
	end
	return tmp
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(x - t), $MachinePrecision] * z), $MachinePrecision]}, If[LessEqual[z, -165000.0], t$95$1, If[LessEqual[z, 5.2e-14], N[(N[(t - x), $MachinePrecision] * y + x), $MachinePrecision], t$95$1]]]

Derivation

1. Split input into 2 regimes

2. if z < -165000 or 5.19999999999999993e-14 < z

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around 0

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

      1. associate-+r+ N/A

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

      2. *-commutative N/A

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

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

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

      4. mul-1-neg N/A

         \[\leadsto \left(x + -1 \cdot \left(z \cdot \left(t - x\right)\right)\right) - \left(-1 \cdot \left(t - x\right)\right) \cdot y \]

      5. lower--.f64 N/A

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

      6. mul-1-neg N/A

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

      7. sub-flip-reverse N/A

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

      8. lower--.f64 N/A

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

      9. *-commutative N/A

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

      10. lower-*.f64 N/A

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

      11. lift--.f64 N/A

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

      12. lower-*.f64 N/A

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

      13. mul-1-neg N/A

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

      14. sub-negate-rev N/A

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

      15. lower--.f64 96.4

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

   4. Applied rewrites 96.4%

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

   5. Taylor expanded in z around inf

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

      1. sub-negate-rev N/A

         \[\leadsto z \cdot \left(\mathsf{neg}\left(\left(t - x\right)\right)\right) \]

      2. mul-1-neg N/A

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

      3. *-commutative N/A

         \[\leadsto \left(-1 \cdot \left(t - x\right)\right) \cdot z \]

      4. lower-*.f64 N/A

         \[\leadsto \left(-1 \cdot \left(t - x\right)\right) \cdot z \]

      5. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(\left(t - x\right)\right)\right) \cdot z \]

      6. sub-negate-rev N/A

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

      7. lift--.f64 45.0

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

   7. Applied rewrites 45.0%

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

   if -165000 < z < 5.19999999999999993e-14

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in z around 0

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

      1. +-commutative N/A

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

      2. *-commutative N/A

         \[\leadsto \left(t - x\right) \cdot y + x \]

      3. lower-fma.f64 N/A

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

      4. lift--.f64 60.2

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

   4. Applied rewrites 60.2%

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

Alternative 4: 71.7% accurate, 0.5× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(x - t\right) \cdot z\\ \mathbf{if}\;z \leq -102000:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq -1.75 \cdot 10^{-164}:\\ \;\;\;\;\mathsf{fma}\left(t, y, x\right)\\ \mathbf{elif}\;z \leq 5.7 \cdot 10^{-229}:\\ \;\;\;\;x - x \cdot y\\ \mathbf{elif}\;z \leq 5 \cdot 10^{-14}:\\ \;\;\;\;\left(t - x\right) \cdot y\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (- x t) z)))
   (if (<= z -102000.0)
     t_1
     (if (<= z -1.75e-164)
       (fma t y x)
       (if (<= z 5.7e-229)
         (- x (* x y))
         (if (<= z 5e-14) (* (- t x) y) t_1))))))

C

double code(double x, double y, double z, double t) {
	double t_1 = (x - t) * z;
	double tmp;
	if (z <= -102000.0) {
		tmp = t_1;
	} else if (z <= -1.75e-164) {
		tmp = fma(t, y, x);
	} else if (z <= 5.7e-229) {
		tmp = x - (x * y);
	} else if (z <= 5e-14) {
		tmp = (t - x) * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(x - t) * z)
	tmp = 0.0
	if (z <= -102000.0)
		tmp = t_1;
	elseif (z <= -1.75e-164)
		tmp = fma(t, y, x);
	elseif (z <= 5.7e-229)
		tmp = Float64(x - Float64(x * y));
	elseif (z <= 5e-14)
		tmp = Float64(Float64(t - x) * y);
	else
		tmp = t_1;
	end
	return tmp
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(x - t), $MachinePrecision] * z), $MachinePrecision]}, If[LessEqual[z, -102000.0], t$95$1, If[LessEqual[z, -1.75e-164], N[(t * y + x), $MachinePrecision], If[LessEqual[z, 5.7e-229], N[(x - N[(x * y), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 5e-14], N[(N[(t - x), $MachinePrecision] * y), $MachinePrecision], t$95$1]]]]]

Derivation

1. Split input into 4 regimes

2. if z < -102000 or 5.0000000000000002e-14 < z

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around 0

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

      1. associate-+r+ N/A

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

      2. *-commutative N/A

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

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

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

      4. mul-1-neg N/A

         \[\leadsto \left(x + -1 \cdot \left(z \cdot \left(t - x\right)\right)\right) - \left(-1 \cdot \left(t - x\right)\right) \cdot y \]

      5. lower--.f64 N/A

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

      6. mul-1-neg N/A

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

      7. sub-flip-reverse N/A

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

      8. lower--.f64 N/A

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

      9. *-commutative N/A

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

      10. lower-*.f64 N/A

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

      11. lift--.f64 N/A

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

      12. lower-*.f64 N/A

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

      13. mul-1-neg N/A

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

      14. sub-negate-rev N/A

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

      15. lower--.f64 96.4

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

   4. Applied rewrites 96.4%

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

   5. Taylor expanded in z around inf

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

      1. sub-negate-rev N/A

         \[\leadsto z \cdot \left(\mathsf{neg}\left(\left(t - x\right)\right)\right) \]

      2. mul-1-neg N/A

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

      3. *-commutative N/A

         \[\leadsto \left(-1 \cdot \left(t - x\right)\right) \cdot z \]

      4. lower-*.f64 N/A

         \[\leadsto \left(-1 \cdot \left(t - x\right)\right) \cdot z \]

      5. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(\left(t - x\right)\right)\right) \cdot z \]

      6. sub-negate-rev N/A

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

      7. lift--.f64 45.0

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

   7. Applied rewrites 45.0%

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

   if -102000 < z < -1.75e-164

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in z around 0

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

      1. +-commutative N/A

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

      2. *-commutative N/A

         \[\leadsto \left(t - x\right) \cdot y + x \]

      3. lower-fma.f64 N/A

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

      4. lift--.f64 60.2

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

   4. Applied rewrites 60.2%

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

   5. Taylor expanded in x around 0

      \[\leadsto \mathsf{fma}\left(t, y, x\right) \]
   6. Step-by-step derivation

   7. Applied rewrites 41.3%

      \[\leadsto \mathsf{fma}\left(t, y, x\right) \]

   if -1.75e-164 < z < 5.70000000000000023e-229

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in t around 0

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

      1. mul-1-neg N/A

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

      2. sub-flip-reverse N/A

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

      3. lower--.f64 N/A

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

      4. *-commutative N/A

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

      5. lower-*.f64 N/A

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

      6. lift--.f64 56.3

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

   4. Applied rewrites 56.3%

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

   5. Taylor expanded in y around inf

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

      1. lower-*.f64 38.3

         \[\leadsto x - x \cdot y \]

   7. Applied rewrites 38.3%

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

   if 5.70000000000000023e-229 < z < 5.0000000000000002e-14

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around inf

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 44.6

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

   4. Applied rewrites 44.6%

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

Alternative 5: 71.3% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(x - t\right) \cdot z\\ \mathbf{if}\;z \leq -102000:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 1.6 \cdot 10^{-181}:\\ \;\;\;\;\mathsf{fma}\left(t, y, x\right)\\ \mathbf{elif}\;z \leq 5 \cdot 10^{-14}:\\ \;\;\;\;\left(t - x\right) \cdot y\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (- x t) z)))
   (if (<= z -102000.0)
     t_1
     (if (<= z 1.6e-181) (fma t y x) (if (<= z 5e-14) (* (- t x) y) t_1)))))

C

double code(double x, double y, double z, double t) {
	double t_1 = (x - t) * z;
	double tmp;
	if (z <= -102000.0) {
		tmp = t_1;
	} else if (z <= 1.6e-181) {
		tmp = fma(t, y, x);
	} else if (z <= 5e-14) {
		tmp = (t - x) * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(x - t) * z)
	tmp = 0.0
	if (z <= -102000.0)
		tmp = t_1;
	elseif (z <= 1.6e-181)
		tmp = fma(t, y, x);
	elseif (z <= 5e-14)
		tmp = Float64(Float64(t - x) * y);
	else
		tmp = t_1;
	end
	return tmp
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(x - t), $MachinePrecision] * z), $MachinePrecision]}, If[LessEqual[z, -102000.0], t$95$1, If[LessEqual[z, 1.6e-181], N[(t * y + x), $MachinePrecision], If[LessEqual[z, 5e-14], N[(N[(t - x), $MachinePrecision] * y), $MachinePrecision], t$95$1]]]]

Derivation

1. Split input into 3 regimes

2. if z < -102000 or 5.0000000000000002e-14 < z

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around 0

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

      1. associate-+r+ N/A

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

      2. *-commutative N/A

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

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

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

      4. mul-1-neg N/A

         \[\leadsto \left(x + -1 \cdot \left(z \cdot \left(t - x\right)\right)\right) - \left(-1 \cdot \left(t - x\right)\right) \cdot y \]

      5. lower--.f64 N/A

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

      6. mul-1-neg N/A

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

      7. sub-flip-reverse N/A

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

      8. lower--.f64 N/A

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

      9. *-commutative N/A

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

      10. lower-*.f64 N/A

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

      11. lift--.f64 N/A

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

      12. lower-*.f64 N/A

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

      13. mul-1-neg N/A

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

      14. sub-negate-rev N/A

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

      15. lower--.f64 96.4

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

   4. Applied rewrites 96.4%

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

   5. Taylor expanded in z around inf

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

      1. sub-negate-rev N/A

         \[\leadsto z \cdot \left(\mathsf{neg}\left(\left(t - x\right)\right)\right) \]

      2. mul-1-neg N/A

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

      3. *-commutative N/A

         \[\leadsto \left(-1 \cdot \left(t - x\right)\right) \cdot z \]

      4. lower-*.f64 N/A

         \[\leadsto \left(-1 \cdot \left(t - x\right)\right) \cdot z \]

      5. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(\left(t - x\right)\right)\right) \cdot z \]

      6. sub-negate-rev N/A

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

      7. lift--.f64 45.0

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

   7. Applied rewrites 45.0%

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

   if -102000 < z < 1.6000000000000001e-181

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in z around 0

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

      1. +-commutative N/A

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

      2. *-commutative N/A

         \[\leadsto \left(t - x\right) \cdot y + x \]

      3. lower-fma.f64 N/A

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

      4. lift--.f64 60.2

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

   4. Applied rewrites 60.2%

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

   5. Taylor expanded in x around 0

      \[\leadsto \mathsf{fma}\left(t, y, x\right) \]
   6. Step-by-step derivation

   7. Applied rewrites 41.3%

      \[\leadsto \mathsf{fma}\left(t, y, x\right) \]

   if 1.6000000000000001e-181 < z < 5.0000000000000002e-14

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around inf

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 44.6

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

   4. Applied rewrites 44.6%

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

Alternative 6: 68.8% accurate, 0.8× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(x - t\right) \cdot z\\ \mathbf{if}\;z \leq -102000:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 4.9 \cdot 10^{-14}:\\ \;\;\;\;\mathsf{fma}\left(t, y, x\right)\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (- x t) z)))
   (if (<= z -102000.0) t_1 (if (<= z 4.9e-14) (fma t y x) t_1))))

C

double code(double x, double y, double z, double t) {
	double t_1 = (x - t) * z;
	double tmp;
	if (z <= -102000.0) {
		tmp = t_1;
	} else if (z <= 4.9e-14) {
		tmp = fma(t, y, x);
	} else {
		tmp = t_1;
	}
	return tmp;
}

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(x - t) * z)
	tmp = 0.0
	if (z <= -102000.0)
		tmp = t_1;
	elseif (z <= 4.9e-14)
		tmp = fma(t, y, x);
	else
		tmp = t_1;
	end
	return tmp
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(x - t), $MachinePrecision] * z), $MachinePrecision]}, If[LessEqual[z, -102000.0], t$95$1, If[LessEqual[z, 4.9e-14], N[(t * y + x), $MachinePrecision], t$95$1]]]

Derivation

1. Split input into 2 regimes

2. if z < -102000 or 4.89999999999999995e-14 < z

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around 0

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

      1. associate-+r+ N/A

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

      2. *-commutative N/A

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

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

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

      4. mul-1-neg N/A

         \[\leadsto \left(x + -1 \cdot \left(z \cdot \left(t - x\right)\right)\right) - \left(-1 \cdot \left(t - x\right)\right) \cdot y \]

      5. lower--.f64 N/A

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

      6. mul-1-neg N/A

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

      7. sub-flip-reverse N/A

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

      8. lower--.f64 N/A

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

      9. *-commutative N/A

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

      10. lower-*.f64 N/A

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

      11. lift--.f64 N/A

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

      12. lower-*.f64 N/A

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

      13. mul-1-neg N/A

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

      14. sub-negate-rev N/A

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

      15. lower--.f64 96.4

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

   4. Applied rewrites 96.4%

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

   5. Taylor expanded in z around inf

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

      1. sub-negate-rev N/A

         \[\leadsto z \cdot \left(\mathsf{neg}\left(\left(t - x\right)\right)\right) \]

      2. mul-1-neg N/A

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

      3. *-commutative N/A

         \[\leadsto \left(-1 \cdot \left(t - x\right)\right) \cdot z \]

      4. lower-*.f64 N/A

         \[\leadsto \left(-1 \cdot \left(t - x\right)\right) \cdot z \]

      5. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(\left(t - x\right)\right)\right) \cdot z \]

      6. sub-negate-rev N/A

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

      7. lift--.f64 45.0

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

   7. Applied rewrites 45.0%

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

   if -102000 < z < 4.89999999999999995e-14

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in z around 0

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

      1. +-commutative N/A

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

      2. *-commutative N/A

         \[\leadsto \left(t - x\right) \cdot y + x \]

      3. lower-fma.f64 N/A

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

      4. lift--.f64 60.2

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

   4. Applied rewrites 60.2%

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

   5. Taylor expanded in x around 0

      \[\leadsto \mathsf{fma}\left(t, y, x\right) \]
   6. Step-by-step derivation

   7. Applied rewrites 41.3%

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

Alternative 7: 53.7% accurate, 0.5× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(-z\right) \cdot t\\ \mathbf{if}\;z \leq -7 \cdot 10^{+140}:\\ \;\;\;\;x \cdot z\\ \mathbf{elif}\;z \leq -140000:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 6.3 \cdot 10^{+28}:\\ \;\;\;\;\mathsf{fma}\left(t, y, x\right)\\ \mathbf{elif}\;z \leq 3.8 \cdot 10^{+142}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 1.25 \cdot 10^{+182}:\\ \;\;\;\;x \cdot z\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (- z) t)))
   (if (<= z -7e+140)
     (* x z)
     (if (<= z -140000.0)
       t_1
       (if (<= z 6.3e+28)
         (fma t y x)
         (if (<= z 3.8e+142) t_1 (if (<= z 1.25e+182) (* x z) t_1)))))))

C

double code(double x, double y, double z, double t) {
	double t_1 = -z * t;
	double tmp;
	if (z <= -7e+140) {
		tmp = x * z;
	} else if (z <= -140000.0) {
		tmp = t_1;
	} else if (z <= 6.3e+28) {
		tmp = fma(t, y, x);
	} else if (z <= 3.8e+142) {
		tmp = t_1;
	} else if (z <= 1.25e+182) {
		tmp = x * z;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(-z) * t)
	tmp = 0.0
	if (z <= -7e+140)
		tmp = Float64(x * z);
	elseif (z <= -140000.0)
		tmp = t_1;
	elseif (z <= 6.3e+28)
		tmp = fma(t, y, x);
	elseif (z <= 3.8e+142)
		tmp = t_1;
	elseif (z <= 1.25e+182)
		tmp = Float64(x * z);
	else
		tmp = t_1;
	end
	return tmp
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[((-z) * t), $MachinePrecision]}, If[LessEqual[z, -7e+140], N[(x * z), $MachinePrecision], If[LessEqual[z, -140000.0], t$95$1, If[LessEqual[z, 6.3e+28], N[(t * y + x), $MachinePrecision], If[LessEqual[z, 3.8e+142], t$95$1, If[LessEqual[z, 1.25e+182], N[(x * z), $MachinePrecision], t$95$1]]]]]]

Derivation

1. Split input into 3 regimes

2. if z < -6.99999999999999978e140 or 3.7999999999999999e142 < z < 1.24999999999999993e182

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in t around 0

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

      1. mul-1-neg N/A

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

      2. sub-flip-reverse N/A

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

      3. lower--.f64 N/A

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

      4. *-commutative N/A

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

      5. lower-*.f64 N/A

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

      6. lift--.f64 56.3

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

   4. Applied rewrites 56.3%

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

   5. Taylor expanded in z around inf

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

      1. lower-*.f64 22.3

         \[\leadsto x \cdot z \]

   7. Applied rewrites 22.3%

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

   if -6.99999999999999978e140 < z < -1.4e5 or 6.3000000000000001e28 < z < 3.7999999999999999e142 or 1.24999999999999993e182 < z

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in x around 0

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 48.7

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

   4. Applied rewrites 48.7%

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

   5. Taylor expanded in y around 0

      \[\leadsto \left(-1 \cdot z\right) \cdot t \]
   6. Step-by-step derivation

      1. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(z\right)\right) \cdot t \]

      2. lower-neg.f64 26.8

         \[\leadsto \left(-z\right) \cdot t \]

   7. Applied rewrites 26.8%

      \[\leadsto \left(-z\right) \cdot t \]

   if -1.4e5 < z < 6.3000000000000001e28

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in z around 0

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

      1. +-commutative N/A

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

      2. *-commutative N/A

         \[\leadsto \left(t - x\right) \cdot y + x \]

      3. lower-fma.f64 N/A

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

      4. lift--.f64 60.2

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

   4. Applied rewrites 60.2%

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

   5. Taylor expanded in x around 0

      \[\leadsto \mathsf{fma}\left(t, y, x\right) \]
   6. Step-by-step derivation

   7. Applied rewrites 41.3%

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

Alternative 8: 49.1% accurate, 0.5× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(-x\right) \cdot y\\ \mathbf{if}\;y \leq -3700000000:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;y \leq 6.2 \cdot 10^{-150}:\\ \;\;\;\;\mathsf{fma}\left(x, z, x\right)\\ \mathbf{elif}\;y \leq 2.05 \cdot 10^{-98}:\\ \;\;\;\;\left(-z\right) \cdot t\\ \mathbf{elif}\;y \leq 470000000000:\\ \;\;\;\;\mathsf{fma}\left(x, z, x\right)\\ \mathbf{elif}\;y \leq 5.2 \cdot 10^{+245}:\\ \;\;\;\;t \cdot y\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (- x) y)))
   (if (<= y -3700000000.0)
     t_1
     (if (<= y 6.2e-150)
       (fma x z x)
       (if (<= y 2.05e-98)
         (* (- z) t)
         (if (<= y 470000000000.0)
           (fma x z x)
           (if (<= y 5.2e+245) (* t y) t_1)))))))

C

double code(double x, double y, double z, double t) {
	double t_1 = -x * y;
	double tmp;
	if (y <= -3700000000.0) {
		tmp = t_1;
	} else if (y <= 6.2e-150) {
		tmp = fma(x, z, x);
	} else if (y <= 2.05e-98) {
		tmp = -z * t;
	} else if (y <= 470000000000.0) {
		tmp = fma(x, z, x);
	} else if (y <= 5.2e+245) {
		tmp = t * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(-x) * y)
	tmp = 0.0
	if (y <= -3700000000.0)
		tmp = t_1;
	elseif (y <= 6.2e-150)
		tmp = fma(x, z, x);
	elseif (y <= 2.05e-98)
		tmp = Float64(Float64(-z) * t);
	elseif (y <= 470000000000.0)
		tmp = fma(x, z, x);
	elseif (y <= 5.2e+245)
		tmp = Float64(t * y);
	else
		tmp = t_1;
	end
	return tmp
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[((-x) * y), $MachinePrecision]}, If[LessEqual[y, -3700000000.0], t$95$1, If[LessEqual[y, 6.2e-150], N[(x * z + x), $MachinePrecision], If[LessEqual[y, 2.05e-98], N[((-z) * t), $MachinePrecision], If[LessEqual[y, 470000000000.0], N[(x * z + x), $MachinePrecision], If[LessEqual[y, 5.2e+245], N[(t * y), $MachinePrecision], t$95$1]]]]]]

Derivation

1. Split input into 4 regimes

2. if y < -3.7e9 or 5.20000000000000008e245 < y

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around inf

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 44.6

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

   4. Applied rewrites 44.6%

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

   5. Taylor expanded in x around inf

      \[\leadsto \left(-1 \cdot x\right) \cdot y \]
   6. Step-by-step derivation

      1. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(x\right)\right) \cdot y \]

      2. lower-neg.f64 22.8

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

   7. Applied rewrites 22.8%

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

   if -3.7e9 < y < 6.19999999999999996e-150 or 2.0499999999999999e-98 < y < 4.7e11

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in t around 0

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

      1. mul-1-neg N/A

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

      2. sub-flip-reverse N/A

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

      3. lower--.f64 N/A

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

      4. *-commutative N/A

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

      5. lower-*.f64 N/A

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

      6. lift--.f64 56.3

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

   4. Applied rewrites 56.3%

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

   5. Taylor expanded in y around 0

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

      1. mul-1-neg N/A

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

      2. add-flip N/A

         \[\leadsto x + x \cdot \color{blue}{z} \]

      3. +-commutative N/A

         \[\leadsto x \cdot z + x \]

      4. lower-fma.f64 37.7

         \[\leadsto \mathsf{fma}\left(x, z, x\right) \]

   7. Applied rewrites 37.7%

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

   if 6.19999999999999996e-150 < y < 2.0499999999999999e-98

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in x around 0

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 48.7

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

   4. Applied rewrites 48.7%

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

   5. Taylor expanded in y around 0

      \[\leadsto \left(-1 \cdot z\right) \cdot t \]
   6. Step-by-step derivation

      1. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(z\right)\right) \cdot t \]

      2. lower-neg.f64 26.8

         \[\leadsto \left(-z\right) \cdot t \]

   7. Applied rewrites 26.8%

      \[\leadsto \left(-z\right) \cdot t \]

   if 4.7e11 < y < 5.20000000000000008e245

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around inf

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 44.6

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

   4. Applied rewrites 44.6%

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

   5. Taylor expanded in x around 0

      \[\leadsto t \cdot y \]
   6. Step-by-step derivation

   7. Applied rewrites 26.0%

      \[\leadsto t \cdot y \]
3. Recombined 4 regimes into one program.
4. Add Preprocessing

Alternative 9: 39.5% accurate, 0.6× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(-x\right) \cdot y\\ \mathbf{if}\;y \leq -3700000000:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;y \leq -2.7 \cdot 10^{-44}:\\ \;\;\;\;x \cdot z\\ \mathbf{elif}\;y \leq 8.2 \cdot 10^{-38}:\\ \;\;\;\;\left(-z\right) \cdot t\\ \mathbf{elif}\;y \leq 5.2 \cdot 10^{+245}:\\ \;\;\;\;t \cdot y\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (- x) y)))
   (if (<= y -3700000000.0)
     t_1
     (if (<= y -2.7e-44)
       (* x z)
       (if (<= y 8.2e-38) (* (- z) t) (if (<= y 5.2e+245) (* t y) t_1))))))

C

double code(double x, double y, double z, double t) {
	double t_1 = -x * y;
	double tmp;
	if (y <= -3700000000.0) {
		tmp = t_1;
	} else if (y <= -2.7e-44) {
		tmp = x * z;
	} else if (y <= 8.2e-38) {
		tmp = -z * t;
	} else if (y <= 5.2e+245) {
		tmp = t * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

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

real(8) function code(x, y, z, t)
use fmin_fmax_functions
    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 = -x * y
    if (y <= (-3700000000.0d0)) then
        tmp = t_1
    else if (y <= (-2.7d-44)) then
        tmp = x * z
    else if (y <= 8.2d-38) then
        tmp = -z * t
    else if (y <= 5.2d+245) then
        tmp = t * 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 = -x * y;
	double tmp;
	if (y <= -3700000000.0) {
		tmp = t_1;
	} else if (y <= -2.7e-44) {
		tmp = x * z;
	} else if (y <= 8.2e-38) {
		tmp = -z * t;
	} else if (y <= 5.2e+245) {
		tmp = t * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	t_1 = -x * y
	tmp = 0
	if y <= -3700000000.0:
		tmp = t_1
	elif y <= -2.7e-44:
		tmp = x * z
	elif y <= 8.2e-38:
		tmp = -z * t
	elif y <= 5.2e+245:
		tmp = t * y
	else:
		tmp = t_1
	return tmp

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(-x) * y)
	tmp = 0.0
	if (y <= -3700000000.0)
		tmp = t_1;
	elseif (y <= -2.7e-44)
		tmp = Float64(x * z);
	elseif (y <= 8.2e-38)
		tmp = Float64(Float64(-z) * t);
	elseif (y <= 5.2e+245)
		tmp = Float64(t * y);
	else
		tmp = t_1;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	t_1 = -x * y;
	tmp = 0.0;
	if (y <= -3700000000.0)
		tmp = t_1;
	elseif (y <= -2.7e-44)
		tmp = x * z;
	elseif (y <= 8.2e-38)
		tmp = -z * t;
	elseif (y <= 5.2e+245)
		tmp = t * y;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[((-x) * y), $MachinePrecision]}, If[LessEqual[y, -3700000000.0], t$95$1, If[LessEqual[y, -2.7e-44], N[(x * z), $MachinePrecision], If[LessEqual[y, 8.2e-38], N[((-z) * t), $MachinePrecision], If[LessEqual[y, 5.2e+245], N[(t * y), $MachinePrecision], t$95$1]]]]]

Derivation

1. Split input into 4 regimes

2. if y < -3.7e9 or 5.20000000000000008e245 < y

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around inf

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 44.6

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

   4. Applied rewrites 44.6%

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

   5. Taylor expanded in x around inf

      \[\leadsto \left(-1 \cdot x\right) \cdot y \]
   6. Step-by-step derivation

      1. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(x\right)\right) \cdot y \]

      2. lower-neg.f64 22.8

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

   7. Applied rewrites 22.8%

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

   if -3.7e9 < y < -2.6999999999999999e-44

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in t around 0

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

      1. mul-1-neg N/A

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

      2. sub-flip-reverse N/A

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

      3. lower--.f64 N/A

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

      4. *-commutative N/A

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

      5. lower-*.f64 N/A

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

      6. lift--.f64 56.3

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

   4. Applied rewrites 56.3%

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

   5. Taylor expanded in z around inf

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

      1. lower-*.f64 22.3

         \[\leadsto x \cdot z \]

   7. Applied rewrites 22.3%

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

   if -2.6999999999999999e-44 < y < 8.1999999999999996e-38

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in x around 0

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 48.7

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

   4. Applied rewrites 48.7%

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

   5. Taylor expanded in y around 0

      \[\leadsto \left(-1 \cdot z\right) \cdot t \]
   6. Step-by-step derivation

      1. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(z\right)\right) \cdot t \]

      2. lower-neg.f64 26.8

         \[\leadsto \left(-z\right) \cdot t \]

   7. Applied rewrites 26.8%

      \[\leadsto \left(-z\right) \cdot t \]

   if 8.1999999999999996e-38 < y < 5.20000000000000008e245

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around inf

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 44.6

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

   4. Applied rewrites 44.6%

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

   5. Taylor expanded in x around 0

      \[\leadsto t \cdot y \]
   6. Step-by-step derivation

   7. Applied rewrites 26.0%

      \[\leadsto t \cdot y \]
3. Recombined 4 regimes into one program.
4. Add Preprocessing

Alternative 10: 37.3% accurate, 0.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(-x\right) \cdot y\\ \mathbf{if}\;y \leq -3700000000:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;y \leq 550000000000:\\ \;\;\;\;x \cdot z\\ \mathbf{elif}\;y \leq 5.2 \cdot 10^{+245}:\\ \;\;\;\;t \cdot y\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (- x) y)))
   (if (<= y -3700000000.0)
     t_1
     (if (<= y 550000000000.0) (* x z) (if (<= y 5.2e+245) (* t y) t_1)))))

C

double code(double x, double y, double z, double t) {
	double t_1 = -x * y;
	double tmp;
	if (y <= -3700000000.0) {
		tmp = t_1;
	} else if (y <= 550000000000.0) {
		tmp = x * z;
	} else if (y <= 5.2e+245) {
		tmp = t * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

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

real(8) function code(x, y, z, t)
use fmin_fmax_functions
    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 = -x * y
    if (y <= (-3700000000.0d0)) then
        tmp = t_1
    else if (y <= 550000000000.0d0) then
        tmp = x * z
    else if (y <= 5.2d+245) then
        tmp = t * 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 = -x * y;
	double tmp;
	if (y <= -3700000000.0) {
		tmp = t_1;
	} else if (y <= 550000000000.0) {
		tmp = x * z;
	} else if (y <= 5.2e+245) {
		tmp = t * y;
	} else {
		tmp = t_1;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	t_1 = -x * y
	tmp = 0
	if y <= -3700000000.0:
		tmp = t_1
	elif y <= 550000000000.0:
		tmp = x * z
	elif y <= 5.2e+245:
		tmp = t * y
	else:
		tmp = t_1
	return tmp

Julia

function code(x, y, z, t)
	t_1 = Float64(Float64(-x) * y)
	tmp = 0.0
	if (y <= -3700000000.0)
		tmp = t_1;
	elseif (y <= 550000000000.0)
		tmp = Float64(x * z);
	elseif (y <= 5.2e+245)
		tmp = Float64(t * y);
	else
		tmp = t_1;
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	t_1 = -x * y;
	tmp = 0.0;
	if (y <= -3700000000.0)
		tmp = t_1;
	elseif (y <= 550000000000.0)
		tmp = x * z;
	elseif (y <= 5.2e+245)
		tmp = t * y;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := Block[{t$95$1 = N[((-x) * y), $MachinePrecision]}, If[LessEqual[y, -3700000000.0], t$95$1, If[LessEqual[y, 550000000000.0], N[(x * z), $MachinePrecision], If[LessEqual[y, 5.2e+245], N[(t * y), $MachinePrecision], t$95$1]]]]

Derivation

1. Split input into 3 regimes

2. if y < -3.7e9 or 5.20000000000000008e245 < y

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around inf

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 44.6

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

   4. Applied rewrites 44.6%

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

   5. Taylor expanded in x around inf

      \[\leadsto \left(-1 \cdot x\right) \cdot y \]
   6. Step-by-step derivation

      1. mul-1-neg N/A

         \[\leadsto \left(\mathsf{neg}\left(x\right)\right) \cdot y \]

      2. lower-neg.f64 22.8

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

   7. Applied rewrites 22.8%

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

   if -3.7e9 < y < 5.5e11

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in t around 0

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

      1. mul-1-neg N/A

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

      2. sub-flip-reverse N/A

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

      3. lower--.f64 N/A

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

      4. *-commutative N/A

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

      5. lower-*.f64 N/A

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

      6. lift--.f64 56.3

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

   4. Applied rewrites 56.3%

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

   5. Taylor expanded in z around inf

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

      1. lower-*.f64 22.3

         \[\leadsto x \cdot z \]

   7. Applied rewrites 22.3%

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

   if 5.5e11 < y < 5.20000000000000008e245

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around inf

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 44.6

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

   4. Applied rewrites 44.6%

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

   5. Taylor expanded in x around 0

      \[\leadsto t \cdot y \]
   6. Step-by-step derivation

   7. Applied rewrites 26.0%

      \[\leadsto t \cdot y \]
3. Recombined 3 regimes into one program.
4. Add Preprocessing

Alternative 11: 34.6% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -2.1 \cdot 10^{+140}:\\ \;\;\;\;x \cdot z\\ \mathbf{elif}\;z \leq 9.5 \cdot 10^{+18}:\\ \;\;\;\;t \cdot y\\ \mathbf{else}:\\ \;\;\;\;x \cdot z\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z t)
 :precision binary64
 (if (<= z -2.1e+140) (* x z) (if (<= z 9.5e+18) (* t y) (* x z))))

C

double code(double x, double y, double z, double t) {
	double tmp;
	if (z <= -2.1e+140) {
		tmp = x * z;
	} else if (z <= 9.5e+18) {
		tmp = t * y;
	} else {
		tmp = x * z;
	}
	return tmp;
}

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

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

real(8) function code(x, y, z, t)
use fmin_fmax_functions
    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 <= (-2.1d+140)) then
        tmp = x * z
    else if (z <= 9.5d+18) then
        tmp = t * y
    else
        tmp = x * z
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z, double t) {
	double tmp;
	if (z <= -2.1e+140) {
		tmp = x * z;
	} else if (z <= 9.5e+18) {
		tmp = t * y;
	} else {
		tmp = x * z;
	}
	return tmp;
}

Python

def code(x, y, z, t):
	tmp = 0
	if z <= -2.1e+140:
		tmp = x * z
	elif z <= 9.5e+18:
		tmp = t * y
	else:
		tmp = x * z
	return tmp

Julia

function code(x, y, z, t)
	tmp = 0.0
	if (z <= -2.1e+140)
		tmp = Float64(x * z);
	elseif (z <= 9.5e+18)
		tmp = Float64(t * y);
	else
		tmp = Float64(x * z);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z, t)
	tmp = 0.0;
	if (z <= -2.1e+140)
		tmp = x * z;
	elseif (z <= 9.5e+18)
		tmp = t * y;
	else
		tmp = x * z;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_, t_] := If[LessEqual[z, -2.1e+140], N[(x * z), $MachinePrecision], If[LessEqual[z, 9.5e+18], N[(t * y), $MachinePrecision], N[(x * z), $MachinePrecision]]]

Derivation

1. Split input into 2 regimes

2. if z < -2.1000000000000002e140 or 9.5e18 < z

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in t around 0

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

      1. mul-1-neg N/A

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

      2. sub-flip-reverse N/A

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

      3. lower--.f64 N/A

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

      4. *-commutative N/A

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

      5. lower-*.f64 N/A

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

      6. lift--.f64 56.3

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

   4. Applied rewrites 56.3%

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

   5. Taylor expanded in z around inf

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

      1. lower-*.f64 22.3

         \[\leadsto x \cdot z \]

   7. Applied rewrites 22.3%

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

   if -2.1000000000000002e140 < z < 9.5e18

   1. Initial program 100.0%

      \[x + \left(y - z\right) \cdot \left(t - x\right) \]

   2. Taylor expanded in y around inf

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

      1. *-commutative N/A

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

      2. lower-*.f64 N/A

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

      3. lift--.f64 44.6

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

   4. Applied rewrites 44.6%

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

   5. Taylor expanded in x around 0

      \[\leadsto t \cdot y \]
   6. Step-by-step derivation

   7. Applied rewrites 26.0%

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

Alternative 12: 22.3% accurate, 3.0× speedup

Math

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

FPCore

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

C

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

Fortran

module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

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

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

Java

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

Python

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

Julia

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

MATLAB

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

Wolfram

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

Derivation

1. Initial program 100.0%

   \[x + \left(y - z\right) \cdot \left(t - x\right) \]

2. Taylor expanded in t around 0

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

   1. mul-1-neg N/A

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

   2. sub-flip-reverse N/A

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

   3. lower--.f64 N/A

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

   4. *-commutative N/A

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

   5. lower-*.f64 N/A

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

   6. lift--.f64 56.3

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

4. Applied rewrites 56.3%

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

5. Taylor expanded in z around inf

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

   1. lower-*.f64 22.3

      \[\leadsto x \cdot z \]

7. Applied rewrites 22.3%

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

Reproduce

herbie shell --seed 2025134 
(FPCore (x y z t)
  :name "Data.Metrics.Snapshot:quantile from metrics-0.3.0.2"
  :precision binary64
  (+ x (* (- y z) (- t x))))