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) (1.0 * ((double) (((double) (1.0 - 0.5)) - ((double) log(((double) exp(((double) (0.5 / ((double) hypot(1.0, x)))))))))))) / ((double) (1.0 + ((double) sqrt(((double) (1.0 * ((double) (0.5 + ((double) (0.5 / ((double) hypot(1.0, x))))))))))))));
}



Bits error versus x
Results
Initial program 15.2
rmApplied flip--15.2
Simplified14.7
Simplified14.7
rmApplied add-log-exp14.7
Final simplification14.7
herbie shell --seed 2020192
(FPCore (x)
:name "Given's Rotation SVD example, simplified"
:precision binary64
(- 1.0 (sqrt (* 0.5 (+ 1.0 (/ 1.0 (hypot 1.0 x)))))))