Average Error: 0.3 → 0.3
Time: 13.8s
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 r5571122 = a;
        double r5571123 = acos(r5571122);
        double r5571124 = -r5571123;
        double r5571125 = r5571122 / r5571124;
        return r5571125;
}
↓
double f(double a) {
        double r5571126 = a;
        double r5571127 = acos(r5571126);
        double r5571128 = -r5571127;
        double r5571129 = r5571126 / r5571128;
        return r5571129;
}

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 2019172 
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))