\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3}\begin{array}{l}
\mathbf{if}\;z \cdot t \le -7.67127596277169436 \cdot 10^{304} \lor \neg \left(z \cdot t \le 1.3317928530781586 \cdot 10^{290}\right):\\
\;\;\;\;\left(2 \cdot \sqrt{x}\right) \cdot \left(1 - \frac{1}{2} \cdot {y}^{2}\right) - \frac{a}{b \cdot 3}\\
\mathbf{else}:\\
\;\;\;\;\left(2 \cdot \sqrt{x}\right) \cdot \left(\cos y \cdot \mathsf{log1p}\left(\mathsf{expm1}\left(\cos \left(\frac{z \cdot t}{3}\right)\right)\right) - \left(\sqrt[3]{\sin y \cdot \sin \left(-0.333333333333333315 \cdot \left(t \cdot z\right)\right)} \cdot \sqrt[3]{\sin y \cdot \sin \left(-0.333333333333333315 \cdot \left(t \cdot z\right)\right)}\right) \cdot \sqrt[3]{\sin y \cdot \sin \left(-0.333333333333333315 \cdot \left(t \cdot z\right)\right)}\right) - \frac{a}{b \cdot 3}\\
\end{array}double code(double x, double y, double z, double t, double a, double b) {
return (((2.0 * sqrt(x)) * cos((y - ((z * t) / 3.0)))) - (a / (b * 3.0)));
}
double code(double x, double y, double z, double t, double a, double b) {
double temp;
if ((((z * t) <= -7.671275962771694e+304) || !((z * t) <= 1.3317928530781586e+290))) {
temp = (((2.0 * sqrt(x)) * (1.0 - (0.5 * pow(y, 2.0)))) - (a / (b * 3.0)));
} else {
temp = (((2.0 * sqrt(x)) * ((cos(y) * log1p(expm1(cos(((z * t) / 3.0))))) - ((cbrt((sin(y) * sin(-(0.3333333333333333 * (t * z))))) * cbrt((sin(y) * sin(-(0.3333333333333333 * (t * z)))))) * cbrt((sin(y) * sin(-(0.3333333333333333 * (t * z)))))))) - (a / (b * 3.0)));
}
return temp;
}




Bits error versus x




Bits error versus y




Bits error versus z




Bits error versus t




Bits error versus a




Bits error versus b
Results
| Original | 20.8 |
|---|---|
| Target | 18.5 |
| Herbie | 17.8 |
if (* z t) < -7.671275962771694e+304 or 1.3317928530781586e+290 < (* z t) Initial program 62.2
Taylor expanded around 0 43.3
if -7.671275962771694e+304 < (* z t) < 1.3317928530781586e+290Initial program 14.2
rmApplied sub-neg14.2
Applied cos-sum13.7
Simplified13.7
Taylor expanded around inf 13.7
rmApplied log1p-expm1-u13.7
rmApplied add-cube-cbrt13.7
Final simplification17.8
herbie shell --seed 2020057 +o rules:numerics
(FPCore (x y z t a b)
:name "Diagrams.Solve.Polynomial:cubForm from diagrams-solve-0.1, K"
:precision binary64
:herbie-target
(if (< z -1.379333748723514e+129) (- (* (* 2 (sqrt x)) (cos (- (/ 1 y) (/ (/ 0.3333333333333333 z) t)))) (/ (/ a 3) b)) (if (< z 3.516290613555987e+106) (- (* (* (sqrt x) 2) (cos (- y (* (/ t 3) z)))) (/ (/ a 3) b)) (- (* (cos (- y (/ (/ 0.3333333333333333 z) t))) (* 2 (sqrt x))) (/ (/ a b) 3))))
(- (* (* 2 (sqrt x)) (cos (- y (/ (* z t) 3)))) (/ a (* b 3))))