Average Error: 0.3 → 0.3
Time: 2.4s
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 r133748 = a;
        double r133749 = acos(r133748);
        double r133750 = -r133749;
        double r133751 = r133748 / r133750;
        return r133751;
}
↓
double f(double a) {
        double r133752 = a;
        double r133753 = acos(r133752);
        double r133754 = -r133753;
        double r133755 = r133752 / r133754;
        return r133755;
}

Error

Bits error versus a

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.3

    \[\frac{a}{-\cos^{-1} a}\]

  2. Final simplification0.3

    \[\leadsto \frac{a}{-\cos^{-1} a}\]

Reproduce

herbie shell --seed 2020056 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))