Average Error: 0.2 → 0.2
Time: 2.9s
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 r121327 = a;
        double r121328 = acos(r121327);
        double r121329 = -r121328;
        double r121330 = r121327 / r121329;
        return r121330;
}
↓
double f(double a) {
        double r121331 = a;
        double r121332 = acos(r121331);
        double r121333 = -r121332;
        double r121334 = r121331 / r121333;
        return r121334;
}

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 2020027 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))