Average Error: 0.2 → 0.2
Time: 2.2m
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 r30584720 = a;
        double r30584721 = acos(r30584720);
        double r30584722 = -r30584721;
        double r30584723 = r30584720 / r30584722;
        return r30584723;
}
↓
double f(double a) {
        double r30584724 = a;
        double r30584725 = acos(r30584724);
        double r30584726 = -r30584725;
        double r30584727 = r30584724 / r30584726;
        return r30584727;
}

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 2019128 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))