Average Error: 0.2 → 0.2
Time: 2.6s
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 r120745 = a;
        double r120746 = acos(r120745);
        double r120747 = -r120746;
        double r120748 = r120745 / r120747;
        return r120748;
}
↓
double f(double a) {
        double r120749 = a;
        double r120750 = acos(r120749);
        double r120751 = -r120750;
        double r120752 = r120749 / r120751;
        return r120752;
}

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 2020064 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))