Average Error: 0.2 → 0.2
Time: 8.2s
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 r77447 = a;
        double r77448 = acos(r77447);
        double r77449 = -r77448;
        double r77450 = r77447 / r77449;
        return r77450;
}
↓
double f(double a) {
        double r77451 = a;
        double r77452 = acos(r77451);
        double r77453 = -r77452;
        double r77454 = r77451 / r77453;
        return r77454;
}

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 2019303 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))