Average Error: 0.2 → 0.2
Time: 11.9s
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 r3423065 = a;
        double r3423066 = acos(r3423065);
        double r3423067 = -r3423066;
        double r3423068 = r3423065 / r3423067;
        return r3423068;
}
↓
double f(double a) {
        double r3423069 = a;
        double r3423070 = acos(r3423069);
        double r3423071 = -r3423070;
        double r3423072 = r3423069 / r3423071;
        return r3423072;
}

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 2019130 
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))