Average Error: 0.3 → 0.3
Time: 21.2s
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 r4689193 = a;
        double r4689194 = acos(r4689193);
        double r4689195 = -r4689194;
        double r4689196 = r4689193 / r4689195;
        return r4689196;
}
↓
double f(double a) {
        double r4689197 = a;
        double r4689198 = acos(r4689197);
        double r4689199 = -r4689198;
        double r4689200 = r4689197 / r4689199;
        return r4689200;
}

Error

Bits error versus a

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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 2019200 
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))