Average Error: 0.3 → 0.3
Time: 2.2s
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 r152790 = a;
        double r152791 = acos(r152790);
        double r152792 = -r152791;
        double r152793 = r152790 / r152792;
        return r152793;
}
↓
double f(double a) {
        double r152794 = a;
        double r152795 = acos(r152794);
        double r152796 = -r152795;
        double r152797 = r152794 / r152796;
        return r152797;
}

Error

Bits error versus a

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.3

    \[\frac{a}{-\cos^{-1} a}\]

  2. Final simplification0.3

    \[\leadsto \frac{a}{-\cos^{-1} a}\]

Reproduce

herbie shell --seed 2019362 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))