Average Error: 0.2 → 0.2
Time: 3.2s
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 r109377 = a;
        double r109378 = acos(r109377);
        double r109379 = -r109378;
        double r109380 = r109377 / r109379;
        return r109380;
}
↓
double f(double a) {
        double r109381 = a;
        double r109382 = acos(r109381);
        double r109383 = -r109382;
        double r109384 = r109381 / r109383;
        return r109384;
}

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 2020039 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))