Average Error: 0.2 → 0.2
Time: 24.0s
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 r77642 = a;
        double r77643 = acos(r77642);
        double r77644 = -r77643;
        double r77645 = r77642 / r77644;
        return r77645;
}
↓
double f(double a) {
        double r77646 = a;
        double r77647 = acos(r77646);
        double r77648 = -r77647;
        double r77649 = r77646 / r77648;
        return r77649;
}

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 2019325 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))