Average Error: 0.2 → 0.2
Time: 19.1s
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 r90709 = a;
        double r90710 = acos(r90709);
        double r90711 = -r90710;
        double r90712 = r90709 / r90711;
        return r90712;
}
↓
double f(double a) {
        double r90713 = a;
        double r90714 = acos(r90713);
        double r90715 = -r90714;
        double r90716 = r90713 / r90715;
        return r90716;
}

Error

Bits error versus a

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

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 2019303 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))