Average Error: 0.2 → 0.2
Time: 2.8s
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 r148770 = a;
        double r148771 = acos(r148770);
        double r148772 = -r148771;
        double r148773 = r148770 / r148772;
        return r148773;
}
↓
double f(double a) {
        double r148774 = a;
        double r148775 = acos(r148774);
        double r148776 = -r148775;
        double r148777 = r148774 / r148776;
        return r148777;
}

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 2020060 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))