Average Error: 0.2 → 0.2
Time: 15.3s
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 r4478875 = a;
        double r4478876 = acos(r4478875);
        double r4478877 = -r4478876;
        double r4478878 = r4478875 / r4478877;
        return r4478878;
}
↓
double f(double a) {
        double r4478879 = a;
        double r4478880 = acos(r4478879);
        double r4478881 = -r4478880;
        double r4478882 = r4478879 / r4478881;
        return r4478882;
}

Error

Bits error versus a

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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 2019139 
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))