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 r171634 = a;
        double r171635 = acos(r171634);
        double r171636 = -r171635;
        double r171637 = r171634 / r171636;
        return r171637;
}
↓
double f(double a) {
        double r171638 = a;
        double r171639 = acos(r171638);
        double r171640 = -r171639;
        double r171641 = r171638 / r171640;
        return r171641;
}

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 2019354 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))