Optimisation.CirclePacking:place from circle-packing-0.1.0.4, F

Average Error: 6.2 → 1.0

Time: 13.2s

Precision: binary64

Cost: 1608

Math

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

↓

\[\begin{array}{l} t_1 := \frac{y \cdot \left(z - t\right)}{a}\\ t_2 := x + \frac{y}{a} \cdot \left(t - z\right)\\ \mathbf{if}\;t_1 \leq -1 \cdot 10^{+294}:\\ \;\;\;\;t_2\\ \mathbf{elif}\;t_1 \leq 4 \cdot 10^{+73}:\\ \;\;\;\;x - t_1\\ \mathbf{else}:\\ \;\;\;\;t_2\\ \end{array} \]

FPCore

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

↓

(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (/ (* y (- z t)) a)) (t_2 (+ x (* (/ y a) (- t z)))))
   (if (<= t_1 -1e+294) t_2 (if (<= t_1 4e+73) (- x t_1) t_2))))

C

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

↓

double code(double x, double y, double z, double t, double a) {
	double t_1 = (y * (z - t)) / a;
	double t_2 = x + ((y / a) * (t - z));
	double tmp;
	if (t_1 <= -1e+294) {
		tmp = t_2;
	} else if (t_1 <= 4e+73) {
		tmp = x - t_1;
	} else {
		tmp = t_2;
	}
	return tmp;
}

Fortran

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

↓

real(8) function code(x, y, z, t, a)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = (y * (z - t)) / a
    t_2 = x + ((y / a) * (t - z))
    if (t_1 <= (-1d+294)) then
        tmp = t_2
    else if (t_1 <= 4d+73) then
        tmp = x - t_1
    else
        tmp = t_2
    end if
    code = tmp
end function

Java

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

↓

public static double code(double x, double y, double z, double t, double a) {
	double t_1 = (y * (z - t)) / a;
	double t_2 = x + ((y / a) * (t - z));
	double tmp;
	if (t_1 <= -1e+294) {
		tmp = t_2;
	} else if (t_1 <= 4e+73) {
		tmp = x - t_1;
	} else {
		tmp = t_2;
	}
	return tmp;
}

Python

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

↓

def code(x, y, z, t, a):
	t_1 = (y * (z - t)) / a
	t_2 = x + ((y / a) * (t - z))
	tmp = 0
	if t_1 <= -1e+294:
		tmp = t_2
	elif t_1 <= 4e+73:
		tmp = x - t_1
	else:
		tmp = t_2
	return tmp

Julia

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

↓

function code(x, y, z, t, a)
	t_1 = Float64(Float64(y * Float64(z - t)) / a)
	t_2 = Float64(x + Float64(Float64(y / a) * Float64(t - z)))
	tmp = 0.0
	if (t_1 <= -1e+294)
		tmp = t_2;
	elseif (t_1 <= 4e+73)
		tmp = Float64(x - t_1);
	else
		tmp = t_2;
	end
	return tmp
end

MATLAB

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

↓

function tmp_2 = code(x, y, z, t, a)
	t_1 = (y * (z - t)) / a;
	t_2 = x + ((y / a) * (t - z));
	tmp = 0.0;
	if (t_1 <= -1e+294)
		tmp = t_2;
	elseif (t_1 <= 4e+73)
		tmp = x - t_1;
	else
		tmp = t_2;
	end
	tmp_2 = tmp;
end

Wolfram

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

↓

code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(y * N[(z - t), $MachinePrecision]), $MachinePrecision] / a), $MachinePrecision]}, Block[{t$95$2 = N[(x + N[(N[(y / a), $MachinePrecision] * N[(t - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$1, -1e+294], t$95$2, If[LessEqual[t$95$1, 4e+73], N[(x - t$95$1), $MachinePrecision], t$95$2]]]]

Target

Original	6.2
Target	0.7
Herbie	1.0

\[\begin{array}{l} \mathbf{if}\;y < -1.0761266216389975 \cdot 10^{-10}:\\ \;\;\;\;x - \frac{1}{\frac{\frac{a}{z - t}}{y}}\\ \mathbf{elif}\;y < 2.894426862792089 \cdot 10^{-49}:\\ \;\;\;\;x - \frac{y \cdot \left(z - t\right)}{a}\\ \mathbf{else}:\\ \;\;\;\;x - \frac{y}{\frac{a}{z - t}}\\ \end{array} \]

Derivation

1. Split input into 2 regimes

2. if (/.f64 (*.f64 y (-.f64 z t)) a) < -1.00000000000000007e294 or 3.99999999999999993e73 < (/.f64 (*.f64 y (-.f64 z t)) a)

   1. Initial program 23.9

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

   2. Applied egg-rr 3.0

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

   if -1.00000000000000007e294 < (/.f64 (*.f64 y (-.f64 z t)) a) < 3.99999999999999993e73

   1. Initial program 0.4

      \[x - \frac{y \cdot \left(z - t\right)}{a} \]
3. Recombined 2 regimes into one program.

4. Final simplification 1.0

   \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{y \cdot \left(z - t\right)}{a} \leq -1 \cdot 10^{+294}:\\ \;\;\;\;x + \frac{y}{a} \cdot \left(t - z\right)\\ \mathbf{elif}\;\frac{y \cdot \left(z - t\right)}{a} \leq 4 \cdot 10^{+73}:\\ \;\;\;\;x - \frac{y \cdot \left(z - t\right)}{a}\\ \mathbf{else}:\\ \;\;\;\;x + \frac{y}{a} \cdot \left(t - z\right)\\ \end{array} \]

Alternatives

Alternative 1
Error	29.1
Cost	1044

\[\begin{array}{l} t_1 := \frac{-z}{\frac{a}{y}}\\ \mathbf{if}\;x \leq -508010109484.6945:\\ \;\;\;\;x\\ \mathbf{elif}\;x \leq -6.751413709937726 \cdot 10^{-122}:\\ \;\;\;\;\frac{t}{\frac{a}{y}}\\ \mathbf{elif}\;x \leq -1.3413225124752972 \cdot 10^{-139}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;x \leq 2.211678346549125 \cdot 10^{-262}:\\ \;\;\;\;\frac{y \cdot t}{a}\\ \mathbf{elif}\;x \leq 1.4572365962305446 \cdot 10^{-213}:\\ \;\;\;\;t_1\\ \mathbf{else}:\\ \;\;\;\;x\\ \end{array} \]

Alternative 2
Error	29.2
Cost	1044

\[\begin{array}{l} \mathbf{if}\;x \leq -508010109484.6945:\\ \;\;\;\;x\\ \mathbf{elif}\;x \leq -6.751413709937726 \cdot 10^{-122}:\\ \;\;\;\;\frac{t}{\frac{a}{y}}\\ \mathbf{elif}\;x \leq -1.3413225124752972 \cdot 10^{-139}:\\ \;\;\;\;\frac{y \cdot z}{-a}\\ \mathbf{elif}\;x \leq 2.211678346549125 \cdot 10^{-262}:\\ \;\;\;\;\frac{y \cdot t}{a}\\ \mathbf{elif}\;x \leq 1.4572365962305446 \cdot 10^{-213}:\\ \;\;\;\;\frac{-z}{\frac{a}{y}}\\ \mathbf{else}:\\ \;\;\;\;x\\ \end{array} \]

Alternative 3
Error	10.6
Cost	976

\[\begin{array}{l} t_1 := x + t \cdot \frac{y}{a}\\ t_2 := x - z \cdot \frac{y}{a}\\ \mathbf{if}\;z \leq -11599.56610957906:\\ \;\;\;\;t_2\\ \mathbf{elif}\;z \leq 2.4217562673675415 \cdot 10^{-132}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z \leq 6.581944038841192 \cdot 10^{-8}:\\ \;\;\;\;t_2\\ \mathbf{elif}\;z \leq 3.520300080658325 \cdot 10^{+91}:\\ \;\;\;\;t_1\\ \mathbf{else}:\\ \;\;\;\;t_2\\ \end{array} \]

Alternative 4
Error	10.6
Cost	976

\[\begin{array}{l} t_1 := x - z \cdot \frac{y}{a}\\ \mathbf{if}\;z \leq -11599.56610957906:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z \leq 2.4217562673675415 \cdot 10^{-132}:\\ \;\;\;\;x + t \cdot \frac{y}{a}\\ \mathbf{elif}\;z \leq 6.581944038841192 \cdot 10^{-8}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z \leq 3.520300080658325 \cdot 10^{+91}:\\ \;\;\;\;x + \frac{t}{\frac{a}{y}}\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \]

Alternative 5
Error	18.1
Cost	712

\[\begin{array}{l} t_1 := x + t \cdot \frac{y}{a}\\ \mathbf{if}\;t \leq 1.571978099433653 \cdot 10^{-125}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;t \leq 1.6178664181833628 \cdot 10^{-68}:\\ \;\;\;\;\frac{y \cdot z}{-a}\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \]

Alternative 6
Error	14.7
Cost	712

\[\begin{array}{l} t_1 := x + t \cdot \frac{y}{a}\\ \mathbf{if}\;x \leq -3.223722728542891 \cdot 10^{-102}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;x \leq 1.4572365962305446 \cdot 10^{-213}:\\ \;\;\;\;\frac{y}{\frac{a}{t - z}}\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \]

Alternative 7
Error	29.2
Cost	584

\[\begin{array}{l} \mathbf{if}\;x \leq -0.0008412389572467476:\\ \;\;\;\;x\\ \mathbf{elif}\;x \leq 1.2248498293391643 \cdot 10^{-241}:\\ \;\;\;\;\frac{y \cdot t}{a}\\ \mathbf{else}:\\ \;\;\;\;x\\ \end{array} \]

Alternative 8
Error	2.5
Cost	576

\[x - \frac{z - t}{\frac{a}{y}} \]

Alternative 9
Error	2.5
Cost	576

\[x + \frac{y}{a} \cdot \left(t - z\right) \]

Alternative 10
Error	30.6
Cost	64

\[x \]

Reproduce

herbie shell --seed 2022300 
(FPCore (x y z t a)
  :name "Optimisation.CirclePacking:place from circle-packing-0.1.0.4, F"
  :precision binary64

  :herbie-target
  (if (< y -1.0761266216389975e-10) (- x (/ 1.0 (/ (/ a (- z t)) y))) (if (< y 2.894426862792089e-49) (- x (/ (* y (- z t)) a)) (- x (/ y (/ a (- z t))))))

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