\frac{x}{y} \cdot \left(z - t\right) + t\begin{array}{l}
\mathbf{if}\;y \le -7.2999266771936822 \cdot 10^{-146} \lor \neg \left(y \le 1.5849138783300118 \cdot 10^{35}\right):\\
\;\;\;\;\mathsf{fma}\left(1, z, -\sqrt[3]{t} \cdot \left(\sqrt[3]{t} \cdot \sqrt[3]{t}\right)\right) \cdot \frac{x}{y} + \mathsf{fma}\left(\mathsf{fma}\left(-t, 1, t\right), \frac{x}{y}, t\right)\\
\mathbf{else}:\\
\;\;\;\;{\left(\frac{\left(z - t\right) \cdot x}{y}\right)}^{1} + t\\
\end{array}double f(double x, double y, double z, double t) {
double r450289 = x;
double r450290 = y;
double r450291 = r450289 / r450290;
double r450292 = z;
double r450293 = t;
double r450294 = r450292 - r450293;
double r450295 = r450291 * r450294;
double r450296 = r450295 + r450293;
return r450296;
}
double f(double x, double y, double z, double t) {
double r450297 = y;
double r450298 = -7.299926677193682e-146;
bool r450299 = r450297 <= r450298;
double r450300 = 1.5849138783300118e+35;
bool r450301 = r450297 <= r450300;
double r450302 = !r450301;
bool r450303 = r450299 || r450302;
double r450304 = 1.0;
double r450305 = z;
double r450306 = t;
double r450307 = cbrt(r450306);
double r450308 = r450307 * r450307;
double r450309 = r450307 * r450308;
double r450310 = -r450309;
double r450311 = fma(r450304, r450305, r450310);
double r450312 = x;
double r450313 = r450312 / r450297;
double r450314 = r450311 * r450313;
double r450315 = -r450306;
double r450316 = fma(r450315, r450304, r450306);
double r450317 = fma(r450316, r450313, r450306);
double r450318 = r450314 + r450317;
double r450319 = r450305 - r450306;
double r450320 = r450319 * r450312;
double r450321 = r450320 / r450297;
double r450322 = pow(r450321, r450304);
double r450323 = r450322 + r450306;
double r450324 = r450303 ? r450318 : r450323;
return r450324;
}




Bits error versus x




Bits error versus y




Bits error versus z




Bits error versus t
| Original | 2.2 |
|---|---|
| Target | 2.4 |
| Herbie | 1.6 |
if y < -7.299926677193682e-146 or 1.5849138783300118e+35 < y Initial program 1.3
rmApplied add-cube-cbrt1.4
Applied *-un-lft-identity1.4
Applied prod-diff1.4
Applied distribute-rgt-in1.4
Applied associate-+l+1.4
Simplified1.4
if -7.299926677193682e-146 < y < 1.5849138783300118e+35Initial program 4.3
rmApplied pow14.3
Applied pow14.3
Applied pow-prod-down4.3
Simplified2.2
Final simplification1.6
herbie shell --seed 2020036 +o rules:numerics
(FPCore (x y z t)
:name "Numeric.Signal.Multichannel:$cget from hsignal-0.2.7.1"
:precision binary64
:herbie-target
(if (< z 2.759456554562692e-282) (+ (* (/ x y) (- z t)) t) (if (< z 2.326994450874436e-110) (+ (* x (/ (- z t) y)) t) (+ (* (/ x y) (- z t)) t)))
(+ (* (/ x y) (- z t)) t))