Average Error: 0.2 → 0.2
Time: 24.6s
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 r87652 = a;
        double r87653 = acos(r87652);
        double r87654 = -r87653;
        double r87655 = r87652 / r87654;
        return r87655;
}
↓
double f(double a) {
        double r87656 = a;
        double r87657 = acos(r87656);
        double r87658 = -r87657;
        double r87659 = r87656 / r87658;
        return r87659;
}

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))))