Average Error: 0.2 → 0.2
Time: 2.8s
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 r137770 = a;
        double r137771 = acos(r137770);
        double r137772 = -r137771;
        double r137773 = r137770 / r137772;
        return r137773;
}
↓
double f(double a) {
        double r137774 = a;
        double r137775 = acos(r137774);
        double r137776 = -r137775;
        double r137777 = r137774 / r137776;
        return r137777;
}

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 2020060 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))