Average Error: 0.2 → 0.2
Time: 8.3s
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 r129557 = a;
        double r129558 = acos(r129557);
        double r129559 = -r129558;
        double r129560 = r129557 / r129559;
        return r129560;
}
↓
double f(double a) {
        double r129561 = a;
        double r129562 = acos(r129561);
        double r129563 = -r129562;
        double r129564 = r129561 / r129563;
        return r129564;
}

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 2019298 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))