Average Error: 0.3 → 0.3
Time: 3.7s
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 r93471 = a;
        double r93472 = acos(r93471);
        double r93473 = -r93472;
        double r93474 = r93471 / r93473;
        return r93474;
}
↓
double f(double a) {
        double r93475 = a;
        double r93476 = acos(r93475);
        double r93477 = -r93476;
        double r93478 = r93475 / r93477;
        return r93478;
}

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 2019346 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))