Average Error: 0.2 → 0.2
Time: 2.2m
Precision: 64
\[\frac{a}{-\cos^{-1} a}\]
↓
\[\frac{a}{-\cos^{-1} a}\]
double f(double a) {
        double r20993891 = a;
        double r20993892 = acos(r20993891);
        double r20993893 = -r20993892;
        double r20993894 = r20993891 / r20993893;
        return r20993894;
}
↓
double f(double a) {
        double r20993895 = a;
        double r20993896 = acos(r20993895);
        double r20993897 = -r20993896;
        double r20993898 = r20993895 / r20993897;
        return r20993898;
}


\frac{a}{-\cos^{-1} a}
↓
\frac{a}{-\cos^{-1} a}

Error

Bits error versus a

Derivation

  1. Initial program 0.2

    \[\frac{a}{-\cos^{-1} a}\]

  2. Final simplification0.2

    \[\leadsto \frac{a}{-\cos^{-1} a}\]

Reproduce

herbie shell --seed 2019102 
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))