Average Error: 0.2 → 0.2
Time: 3.2s
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 r121581 = a;
        double r121582 = acos(r121581);
        double r121583 = -r121582;
        double r121584 = r121581 / r121583;
        return r121584;
}
↓
double f(double a) {
        double r121585 = a;
        double r121586 = acos(r121585);
        double r121587 = -r121586;
        double r121588 = r121585 / r121587;
        return r121588;
}

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 2020047 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))