\cos^{-1} \left({\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}^{\left(\mathsf{log1p}\left(a\right)\right)}\right)\cos^{-1} \left({\left(\log \left(\sqrt{e^{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}\right) + \left(\log \left(\sqrt{\sqrt[3]{e^{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}}\right) + \log \left(\left|\sqrt[3]{e^{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}\right|\right)\right)\right)}^{\left(\mathsf{log1p}\left(a\right)\right)}\right)double f(double a) {
double r1039479 = a;
double r1039480 = cosh(r1039479);
double r1039481 = r1039479 * r1039479;
double r1039482 = fmod(r1039480, r1039481);
double r1039483 = log1p(r1039479);
double r1039484 = pow(r1039482, r1039483);
double r1039485 = acos(r1039484);
return r1039485;
}
double f(double a) {
double r1039486 = a;
double r1039487 = cosh(r1039486);
double r1039488 = r1039486 * r1039486;
double r1039489 = fmod(r1039487, r1039488);
double r1039490 = exp(r1039489);
double r1039491 = sqrt(r1039490);
double r1039492 = log(r1039491);
double r1039493 = cbrt(r1039490);
double r1039494 = sqrt(r1039493);
double r1039495 = log(r1039494);
double r1039496 = fabs(r1039493);
double r1039497 = log(r1039496);
double r1039498 = r1039495 + r1039497;
double r1039499 = r1039492 + r1039498;
double r1039500 = log1p(r1039486);
double r1039501 = pow(r1039499, r1039500);
double r1039502 = acos(r1039501);
return r1039502;
}



Bits error versus a
Initial program 60.5
rmApplied add-log-exp59.6
rmApplied add-sqr-sqrt59.6
Applied log-prod59.6
rmApplied add-cube-cbrt59.6
Applied sqrt-prod59.6
Applied log-prod59.6
Simplified59.6
Final simplification59.6
herbie shell --seed 2019134
(FPCore (a)
:name "Random Jason Timeout Test 012"
(acos (pow (fmod (cosh a) (* a a)) (log1p a))))