Average Error: 0.2 → 0.2
Time: 12.0s
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 r119776 = a;
        double r119777 = acos(r119776);
        double r119778 = -r119777;
        double r119779 = r119776 / r119778;
        return r119779;
}
↓
double f(double a) {
        double r119780 = a;
        double r119781 = acos(r119780);
        double r119782 = -r119781;
        double r119783 = r119780 / r119782;
        return r119783;
}

Error

Bits error versus a

Try it out

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