Average Error: 0.2 → 0.2
Time: 2.7s
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 r124719 = a;
        double r124720 = acos(r124719);
        double r124721 = -r124720;
        double r124722 = r124719 / r124721;
        return r124722;
}
↓
double f(double a) {
        double r124723 = a;
        double r124724 = acos(r124723);
        double r124725 = -r124724;
        double r124726 = r124723 / r124725;
        return r124726;
}

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 2020064 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))