Average Error: 0.2 → 0.2
Time: 22.7s
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 r3787731 = a;
        double r3787732 = acos(r3787731);
        double r3787733 = -r3787732;
        double r3787734 = r3787731 / r3787733;
        return r3787734;
}
↓
double f(double a) {
        double r3787735 = a;
        double r3787736 = acos(r3787735);
        double r3787737 = -r3787736;
        double r3787738 = r3787735 / r3787737;
        return r3787738;
}

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 2019152 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))