Average Error: 0.3 → 0.3
Time: 14.0s
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 r4171221 = a;
        double r4171222 = acos(r4171221);
        double r4171223 = -r4171222;
        double r4171224 = r4171221 / r4171223;
        return r4171224;
}
↓
double f(double a) {
        double r4171225 = a;
        double r4171226 = acos(r4171225);
        double r4171227 = -r4171226;
        double r4171228 = r4171225 / r4171227;
        return r4171228;
}

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 2019164 
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))