| Alternative 1 | |
|---|---|
| Error | 7.1 |
| Cost | 7368 |
(FPCore (x y z t a) :precision binary64 (- (+ x y) (/ (* (- z t) y) (- a t))))
(FPCore (x y z t a)
:precision binary64
(let* ((t_1 (+ x (- y (/ y (/ (- a t) (- z t))))))
(t_2 (+ (+ y x) (/ (* y (- t z)) (- a t)))))
(if (<= t_2 (- INFINITY))
t_1
(if (<= t_2 -2e-255)
t_2
(if (<= t_2 0.0)
(+ (* (/ y t) (- z a)) x)
(if (<= t_2 2e+242) t_2 t_1))))))double code(double x, double y, double z, double t, double a) {
return (x + y) - (((z - t) * y) / (a - t));
}
double code(double x, double y, double z, double t, double a) {
double t_1 = x + (y - (y / ((a - t) / (z - t))));
double t_2 = (y + x) + ((y * (t - z)) / (a - t));
double tmp;
if (t_2 <= -((double) INFINITY)) {
tmp = t_1;
} else if (t_2 <= -2e-255) {
tmp = t_2;
} else if (t_2 <= 0.0) {
tmp = ((y / t) * (z - a)) + x;
} else if (t_2 <= 2e+242) {
tmp = t_2;
} else {
tmp = t_1;
}
return tmp;
}
public static double code(double x, double y, double z, double t, double a) {
return (x + y) - (((z - t) * y) / (a - t));
}
public static double code(double x, double y, double z, double t, double a) {
double t_1 = x + (y - (y / ((a - t) / (z - t))));
double t_2 = (y + x) + ((y * (t - z)) / (a - t));
double tmp;
if (t_2 <= -Double.POSITIVE_INFINITY) {
tmp = t_1;
} else if (t_2 <= -2e-255) {
tmp = t_2;
} else if (t_2 <= 0.0) {
tmp = ((y / t) * (z - a)) + x;
} else if (t_2 <= 2e+242) {
tmp = t_2;
} else {
tmp = t_1;
}
return tmp;
}
def code(x, y, z, t, a): return (x + y) - (((z - t) * y) / (a - t))
def code(x, y, z, t, a): t_1 = x + (y - (y / ((a - t) / (z - t)))) t_2 = (y + x) + ((y * (t - z)) / (a - t)) tmp = 0 if t_2 <= -math.inf: tmp = t_1 elif t_2 <= -2e-255: tmp = t_2 elif t_2 <= 0.0: tmp = ((y / t) * (z - a)) + x elif t_2 <= 2e+242: tmp = t_2 else: tmp = t_1 return tmp
function code(x, y, z, t, a) return Float64(Float64(x + y) - Float64(Float64(Float64(z - t) * y) / Float64(a - t))) end
function code(x, y, z, t, a) t_1 = Float64(x + Float64(y - Float64(y / Float64(Float64(a - t) / Float64(z - t))))) t_2 = Float64(Float64(y + x) + Float64(Float64(y * Float64(t - z)) / Float64(a - t))) tmp = 0.0 if (t_2 <= Float64(-Inf)) tmp = t_1; elseif (t_2 <= -2e-255) tmp = t_2; elseif (t_2 <= 0.0) tmp = Float64(Float64(Float64(y / t) * Float64(z - a)) + x); elseif (t_2 <= 2e+242) tmp = t_2; else tmp = t_1; end return tmp end
function tmp = code(x, y, z, t, a) tmp = (x + y) - (((z - t) * y) / (a - t)); end
function tmp_2 = code(x, y, z, t, a) t_1 = x + (y - (y / ((a - t) / (z - t)))); t_2 = (y + x) + ((y * (t - z)) / (a - t)); tmp = 0.0; if (t_2 <= -Inf) tmp = t_1; elseif (t_2 <= -2e-255) tmp = t_2; elseif (t_2 <= 0.0) tmp = ((y / t) * (z - a)) + x; elseif (t_2 <= 2e+242) tmp = t_2; else tmp = t_1; end tmp_2 = tmp; end
code[x_, y_, z_, t_, a_] := N[(N[(x + y), $MachinePrecision] - N[(N[(N[(z - t), $MachinePrecision] * y), $MachinePrecision] / N[(a - t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(x + N[(y - N[(y / N[(N[(a - t), $MachinePrecision] / N[(z - t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(N[(y + x), $MachinePrecision] + N[(N[(y * N[(t - z), $MachinePrecision]), $MachinePrecision] / N[(a - t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$2, (-Infinity)], t$95$1, If[LessEqual[t$95$2, -2e-255], t$95$2, If[LessEqual[t$95$2, 0.0], N[(N[(N[(y / t), $MachinePrecision] * N[(z - a), $MachinePrecision]), $MachinePrecision] + x), $MachinePrecision], If[LessEqual[t$95$2, 2e+242], t$95$2, t$95$1]]]]]]
\left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t}
\begin{array}{l}
t_1 := x + \left(y - \frac{y}{\frac{a - t}{z - t}}\right)\\
t_2 := \left(y + x\right) + \frac{y \cdot \left(t - z\right)}{a - t}\\
\mathbf{if}\;t_2 \leq -\infty:\\
\;\;\;\;t_1\\
\mathbf{elif}\;t_2 \leq -2 \cdot 10^{-255}:\\
\;\;\;\;t_2\\
\mathbf{elif}\;t_2 \leq 0:\\
\;\;\;\;\frac{y}{t} \cdot \left(z - a\right) + x\\
\mathbf{elif}\;t_2 \leq 2 \cdot 10^{+242}:\\
\;\;\;\;t_2\\
\mathbf{else}:\\
\;\;\;\;t_1\\
\end{array}
Results
| Original | 16.0 |
|---|---|
| Target | 8.4 |
| Herbie | 4.9 |
if (-.f64 (+.f64 x y) (/.f64 (*.f64 (-.f64 z t) y) (-.f64 a t))) < -inf.0 or 2.0000000000000001e242 < (-.f64 (+.f64 x y) (/.f64 (*.f64 (-.f64 z t) y) (-.f64 a t))) Initial program 45.8
Simplified15.2
[Start]45.8 | \[ \left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t}
\] |
|---|---|
+-rgt-identity [<=]45.8 | \[ \color{blue}{\left(\left(x + y\right) + 0\right)} - \frac{\left(z - t\right) \cdot y}{a - t}
\] |
associate-+l+ [=>]45.8 | \[ \color{blue}{\left(x + \left(y + 0\right)\right)} - \frac{\left(z - t\right) \cdot y}{a - t}
\] |
associate-+r- [<=]45.8 | \[ \color{blue}{x + \left(\left(y + 0\right) - \frac{\left(z - t\right) \cdot y}{a - t}\right)}
\] |
+-rgt-identity [=>]45.8 | \[ x + \left(\color{blue}{y} - \frac{\left(z - t\right) \cdot y}{a - t}\right)
\] |
*-commutative [=>]45.8 | \[ x + \left(y - \frac{\color{blue}{y \cdot \left(z - t\right)}}{a - t}\right)
\] |
associate-/l* [=>]15.2 | \[ x + \left(y - \color{blue}{\frac{y}{\frac{a - t}{z - t}}}\right)
\] |
if -inf.0 < (-.f64 (+.f64 x y) (/.f64 (*.f64 (-.f64 z t) y) (-.f64 a t))) < -2e-255 or 0.0 < (-.f64 (+.f64 x y) (/.f64 (*.f64 (-.f64 z t) y) (-.f64 a t))) < 2.0000000000000001e242Initial program 1.5
if -2e-255 < (-.f64 (+.f64 x y) (/.f64 (*.f64 (-.f64 z t) y) (-.f64 a t))) < 0.0Initial program 60.0
Simplified35.0
[Start]60.0 | \[ \left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t}
\] |
|---|---|
associate--l+ [=>]35.1 | \[ \color{blue}{x + \left(y - \frac{\left(z - t\right) \cdot y}{a - t}\right)}
\] |
sub-neg [=>]35.1 | \[ x + \color{blue}{\left(y + \left(-\frac{\left(z - t\right) \cdot y}{a - t}\right)\right)}
\] |
+-commutative [=>]35.1 | \[ x + \color{blue}{\left(\left(-\frac{\left(z - t\right) \cdot y}{a - t}\right) + y\right)}
\] |
neg-mul-1 [=>]35.1 | \[ x + \left(\color{blue}{-1 \cdot \frac{\left(z - t\right) \cdot y}{a - t}} + y\right)
\] |
associate-*l/ [<=]35.0 | \[ x + \left(-1 \cdot \color{blue}{\left(\frac{z - t}{a - t} \cdot y\right)} + y\right)
\] |
associate-*r* [=>]35.0 | \[ x + \left(\color{blue}{\left(-1 \cdot \frac{z - t}{a - t}\right) \cdot y} + y\right)
\] |
fma-def [=>]35.0 | \[ x + \color{blue}{\mathsf{fma}\left(-1 \cdot \frac{z - t}{a - t}, y, y\right)}
\] |
mul-1-neg [=>]35.0 | \[ x + \mathsf{fma}\left(\color{blue}{-\frac{z - t}{a - t}}, y, y\right)
\] |
neg-sub0 [=>]35.0 | \[ x + \mathsf{fma}\left(\color{blue}{0 - \frac{z - t}{a - t}}, y, y\right)
\] |
div-sub [=>]35.0 | \[ x + \mathsf{fma}\left(0 - \color{blue}{\left(\frac{z}{a - t} - \frac{t}{a - t}\right)}, y, y\right)
\] |
associate--r- [=>]35.0 | \[ x + \mathsf{fma}\left(\color{blue}{\left(0 - \frac{z}{a - t}\right) + \frac{t}{a - t}}, y, y\right)
\] |
neg-sub0 [<=]35.0 | \[ x + \mathsf{fma}\left(\color{blue}{\left(-\frac{z}{a - t}\right)} + \frac{t}{a - t}, y, y\right)
\] |
+-commutative [=>]35.0 | \[ x + \mathsf{fma}\left(\color{blue}{\frac{t}{a - t} + \left(-\frac{z}{a - t}\right)}, y, y\right)
\] |
sub-neg [<=]35.0 | \[ x + \mathsf{fma}\left(\color{blue}{\frac{t}{a - t} - \frac{z}{a - t}}, y, y\right)
\] |
div-sub [<=]35.0 | \[ x + \mathsf{fma}\left(\color{blue}{\frac{t - z}{a - t}}, y, y\right)
\] |
Taylor expanded in t around inf 60.6
Simplified6.0
[Start]60.6 | \[ y + \left(\frac{y \cdot \left(z - a\right)}{t} + \left(-1 \cdot y + x\right)\right)
\] |
|---|---|
+-commutative [=>]60.6 | \[ \color{blue}{\left(\frac{y \cdot \left(z - a\right)}{t} + \left(-1 \cdot y + x\right)\right) + y}
\] |
associate-+l+ [=>]28.1 | \[ \color{blue}{\frac{y \cdot \left(z - a\right)}{t} + \left(\left(-1 \cdot y + x\right) + y\right)}
\] |
associate-/l* [=>]27.8 | \[ \color{blue}{\frac{y}{\frac{t}{z - a}}} + \left(\left(-1 \cdot y + x\right) + y\right)
\] |
associate-/r/ [=>]32.3 | \[ \color{blue}{\frac{y}{t} \cdot \left(z - a\right)} + \left(\left(-1 \cdot y + x\right) + y\right)
\] |
+-commutative [<=]32.3 | \[ \frac{y}{t} \cdot \left(z - a\right) + \color{blue}{\left(y + \left(-1 \cdot y + x\right)\right)}
\] |
associate-+r+ [=>]6.0 | \[ \frac{y}{t} \cdot \left(z - a\right) + \color{blue}{\left(\left(y + -1 \cdot y\right) + x\right)}
\] |
+-commutative [=>]6.0 | \[ \frac{y}{t} \cdot \left(z - a\right) + \color{blue}{\left(x + \left(y + -1 \cdot y\right)\right)}
\] |
distribute-rgt1-in [=>]6.0 | \[ \frac{y}{t} \cdot \left(z - a\right) + \left(x + \color{blue}{\left(-1 + 1\right) \cdot y}\right)
\] |
metadata-eval [=>]6.0 | \[ \frac{y}{t} \cdot \left(z - a\right) + \left(x + \color{blue}{0} \cdot y\right)
\] |
mul0-lft [=>]6.0 | \[ \frac{y}{t} \cdot \left(z - a\right) + \left(x + \color{blue}{0}\right)
\] |
Final simplification4.9
| Alternative 1 | |
|---|---|
| Error | 7.1 |
| Cost | 7368 |
| Alternative 2 | |
|---|---|
| Error | 6.4 |
| Cost | 3532 |
| Alternative 3 | |
|---|---|
| Error | 7.1 |
| Cost | 1476 |
| Alternative 4 | |
|---|---|
| Error | 12.4 |
| Cost | 1368 |
| Alternative 5 | |
|---|---|
| Error | 11.8 |
| Cost | 1104 |
| Alternative 6 | |
|---|---|
| Error | 7.1 |
| Cost | 1097 |
| Alternative 7 | |
|---|---|
| Error | 16.2 |
| Cost | 1040 |
| Alternative 8 | |
|---|---|
| Error | 17.5 |
| Cost | 1040 |
| Alternative 9 | |
|---|---|
| Error | 21.8 |
| Cost | 848 |
| Alternative 10 | |
|---|---|
| Error | 21.9 |
| Cost | 848 |
| Alternative 11 | |
|---|---|
| Error | 8.6 |
| Cost | 841 |
| Alternative 12 | |
|---|---|
| Error | 10.7 |
| Cost | 840 |
| Alternative 13 | |
|---|---|
| Error | 14.8 |
| Cost | 712 |
| Alternative 14 | |
|---|---|
| Error | 20.1 |
| Cost | 456 |
| Alternative 15 | |
|---|---|
| Error | 26.9 |
| Cost | 328 |
| Alternative 16 | |
|---|---|
| Error | 28.5 |
| Cost | 64 |
herbie shell --seed 2023018
(FPCore (x y z t a)
:name "Graphics.Rendering.Plot.Render.Plot.Axis:renderAxisTick from plot-0.2.3.4, B"
:precision binary64
:herbie-target
(if (< (- (+ x y) (/ (* (- z t) y) (- a t))) -1.3664970889390727e-7) (- (+ y x) (* (* (- z t) (/ 1.0 (- a t))) y)) (if (< (- (+ x y) (/ (* (- z t) y) (- a t))) 1.4754293444577233e-239) (/ (- (* y (- a z)) (* x t)) (- a t)) (- (+ y x) (* (* (- z t) (/ 1.0 (- a t))) y))))
(- (+ x y) (/ (* (- z t) y) (- a t))))