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 r128083 = a;
        double r128084 = acos(r128083);
        double r128085 = -r128084;
        double r128086 = r128083 / r128085;
        return r128086;
}
↓
double f(double a) {
        double r128087 = a;
        double r128088 = acos(r128087);
        double r128089 = -r128088;
        double r128090 = r128087 / r128089;
        return r128090;
}

Error

Bits error versus a

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.2

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

  2. Final simplification0.2

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

Reproduce

herbie shell --seed 2020021 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))