Average Error: 0.3 → 0.3
Time: 2.9s
Precision: 64
\[\frac{a}{-\cos^{-1} a}\]
↓
\[\frac{a}{-\cos^{-1} a}\]
\frac{a}{-\cos^{-1} a}
↓
\frac{a}{-\cos^{-1} a}
double f(double a) {
        double r110095 = a;
        double r110096 = acos(r110095);
        double r110097 = -r110096;
        double r110098 = r110095 / r110097;
        return r110098;
}
↓
double f(double a) {
        double r110099 = a;
        double r110100 = acos(r110099);
        double r110101 = -r110100;
        double r110102 = r110099 / r110101;
        return r110102;
}

Error

Bits error versus a

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.3

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

  2. Final simplification0.3

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

Reproduce

herbie shell --seed 2020081 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))