Average Error: 0.2 → 0.2
Time: 3.1s
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 r151664 = a;
        double r151665 = acos(r151664);
        double r151666 = -r151665;
        double r151667 = r151664 / r151666;
        return r151667;
}
↓
double f(double a) {
        double r151668 = a;
        double r151669 = acos(r151668);
        double r151670 = -r151669;
        double r151671 = r151668 / r151670;
        return r151671;
}

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 2020062 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))