Average Error: 0.2 → 0.2
Time: 4.6s
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 r179452 = a;
        double r179453 = acos(r179452);
        double r179454 = -r179453;
        double r179455 = r179452 / r179454;
        return r179455;
}
↓
double f(double a) {
        double r179456 = a;
        double r179457 = acos(r179456);
        double r179458 = -r179457;
        double r179459 = r179456 / r179458;
        return r179459;
}

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 2019318 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))