Average Error: 0.3 → 0.3
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 r98440 = a;
        double r98441 = acos(r98440);
        double r98442 = -r98441;
        double r98443 = r98440 / r98442;
        return r98443;
}
↓
double f(double a) {
        double r98444 = a;
        double r98445 = acos(r98444);
        double r98446 = -r98445;
        double r98447 = r98444 / r98446;
        return r98447;
}

Error

Bits error versus a

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.3

    \[\frac{a}{-\cos^{-1} a}\]

  2. Final simplification0.3

    \[\leadsto \frac{a}{-\cos^{-1} a}\]

Reproduce

herbie shell --seed 2020056 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))