Average Error: 0.2 → 0.2
Time: 31.3s
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 r13634909 = a;
        double r13634910 = acos(r13634909);
        double r13634911 = -r13634910;
        double r13634912 = r13634909 / r13634911;
        return r13634912;
}
↓
double f(double a) {
        double r13634913 = a;
        double r13634914 = acos(r13634913);
        double r13634915 = -r13634914;
        double r13634916 = r13634913 / r13634915;
        return r13634916;
}

Error

Bits error versus a

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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 2019104 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))