Average Error: 0.2 → 0.2
Time: 3.3s
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 r95371 = a;
        double r95372 = acos(r95371);
        double r95373 = -r95372;
        double r95374 = r95371 / r95373;
        return r95374;
}
↓
double f(double a) {
        double r95375 = a;
        double r95376 = acos(r95375);
        double r95377 = -r95376;
        double r95378 = r95375 / r95377;
        return r95378;
}

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 2019356 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))