Average Error: 0.2 → 0.2
Time: 14.4s
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 r121761 = a;
        double r121762 = acos(r121761);
        double r121763 = -r121762;
        double r121764 = r121761 / r121763;
        return r121764;
}
↓
double f(double a) {
        double r121765 = a;
        double r121766 = acos(r121765);
        double r121767 = -r121766;
        double r121768 = r121765 / r121767;
        return r121768;
}

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 2019351 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))