Average Error: 0.2 → 0.2
Time: 11.8s
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 r88490 = a;
        double r88491 = acos(r88490);
        double r88492 = -r88491;
        double r88493 = r88490 / r88492;
        return r88493;
}
↓
double f(double a) {
        double r88494 = a;
        double r88495 = acos(r88494);
        double r88496 = -r88495;
        double r88497 = r88494 / r88496;
        return r88497;
}

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 2019235 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))