Average Error: 0.2 → 0.2
Time: 3.0s
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 r95846 = a;
        double r95847 = acos(r95846);
        double r95848 = -r95847;
        double r95849 = r95846 / r95848;
        return r95849;
}
↓
double f(double a) {
        double r95850 = a;
        double r95851 = acos(r95850);
        double r95852 = -r95851;
        double r95853 = r95850 / r95852;
        return r95853;
}

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 2020020 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))