Average Error: 0.3 → 0.3
Time: 10.1s
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 r1666145 = a;
        double r1666146 = acos(r1666145);
        double r1666147 = -r1666146;
        double r1666148 = r1666145 / r1666147;
        return r1666148;
}
↓
double f(double a) {
        double r1666149 = a;
        double r1666150 = acos(r1666149);
        double r1666151 = -r1666150;
        double r1666152 = r1666149 / r1666151;
        return r1666152;
}

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 2019154 
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))