1 - \sqrt{0.5 \cdot \left(1 + \frac{1}{\mathsf{hypot}\left(1, x\right)}\right)}\frac{\frac{{\left(1 \cdot \left(1 - 0.5\right)\right)}^{3} - {\left({\left(0.5 \cdot \frac{1}{\mathsf{hypot}\left(1, x\right)}\right)}^{\left(\sqrt[3]{3} \cdot \sqrt[3]{3}\right)}\right)}^{\left(\sqrt[3]{3}\right)}}{\left(\sqrt[3]{\left(0.5 \cdot \frac{1}{\mathsf{hypot}\left(1, x\right)}\right) \cdot \left(0.5 \cdot \frac{1}{\mathsf{hypot}\left(1, x\right)} + 1 \cdot \left(1 - 0.5\right)\right)} \cdot \sqrt[3]{\left(0.5 \cdot \frac{1}{\mathsf{hypot}\left(1, x\right)}\right) \cdot \left(0.5 \cdot \frac{1}{\mathsf{hypot}\left(1, x\right)} + 1 \cdot \left(1 - 0.5\right)\right)}\right) \cdot \sqrt[3]{\left(0.5 \cdot \frac{1}{\mathsf{hypot}\left(1, x\right)}\right) \cdot \left(0.5 \cdot \frac{1}{\mathsf{hypot}\left(1, x\right)} + 1 \cdot \left(1 - 0.5\right)\right)} + \left(1 \cdot \left(1 - 0.5\right)\right) \cdot \left(1 \cdot \left(1 - 0.5\right)\right)}}{1 + \sqrt{0.5 \cdot \left(1 + \frac{1}{\mathsf{hypot}\left(1, x\right)}\right)}}double code(double x) {
return ((double) (1.0 - ((double) sqrt(((double) (0.5 * ((double) (1.0 + ((double) (1.0 / ((double) hypot(1.0, x))))))))))));
}
double code(double x) {
return ((double) (((double) (((double) (((double) pow(((double) (1.0 * ((double) (1.0 - 0.5)))), 3.0)) - ((double) pow(((double) pow(((double) (0.5 * ((double) (1.0 / ((double) hypot(1.0, x)))))), ((double) (((double) cbrt(3.0)) * ((double) cbrt(3.0)))))), ((double) cbrt(3.0)))))) / ((double) (((double) (((double) (((double) cbrt(((double) (((double) (0.5 * ((double) (1.0 / ((double) hypot(1.0, x)))))) * ((double) (((double) (0.5 * ((double) (1.0 / ((double) hypot(1.0, x)))))) + ((double) (1.0 * ((double) (1.0 - 0.5)))))))))) * ((double) cbrt(((double) (((double) (0.5 * ((double) (1.0 / ((double) hypot(1.0, x)))))) * ((double) (((double) (0.5 * ((double) (1.0 / ((double) hypot(1.0, x)))))) + ((double) (1.0 * ((double) (1.0 - 0.5)))))))))))) * ((double) cbrt(((double) (((double) (0.5 * ((double) (1.0 / ((double) hypot(1.0, x)))))) * ((double) (((double) (0.5 * ((double) (1.0 / ((double) hypot(1.0, x)))))) + ((double) (1.0 * ((double) (1.0 - 0.5)))))))))))) + ((double) (((double) (1.0 * ((double) (1.0 - 0.5)))) * ((double) (1.0 * ((double) (1.0 - 0.5)))))))))) / ((double) (1.0 + ((double) sqrt(((double) (0.5 * ((double) (1.0 + ((double) (1.0 / ((double) hypot(1.0, x))))))))))))));
}



Bits error versus x
Results
Initial program 15.4
rmApplied flip--15.4
Simplified14.9
rmApplied flip3--14.9
Simplified14.9
rmApplied add-cube-cbrt14.9
Applied pow-unpow14.9
rmApplied add-cube-cbrt14.9
Final simplification14.9
herbie shell --seed 2020128
(FPCore (x)
:name "Given's Rotation SVD example, simplified"
:precision binary64
(- 1.0 (sqrt (* 0.5 (+ 1.0 (/ 1.0 (hypot 1.0 x)))))))