Average Error: 0.2 → 0.2
Time: 9.7s
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 r108327 = a;
        double r108328 = acos(r108327);
        double r108329 = -r108328;
        double r108330 = r108327 / r108329;
        return r108330;
}
↓
double f(double a) {
        double r108331 = a;
        double r108332 = acos(r108331);
        double r108333 = -r108332;
        double r108334 = r108331 / r108333;
        return r108334;
}

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 2020047 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))