Average Error: 0.2 → 0.2
Time: 2.5s
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 r157346 = a;
        double r157347 = acos(r157346);
        double r157348 = -r157347;
        double r157349 = r157346 / r157348;
        return r157349;
}
↓
double f(double a) {
        double r157350 = a;
        double r157351 = acos(r157350);
        double r157352 = -r157351;
        double r157353 = r157350 / r157352;
        return r157353;
}

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 2019344 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))