Average Error: 0.2 → 0.2
Time: 1.2m
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 r13919780 = a;
        double r13919781 = acos(r13919780);
        double r13919782 = -r13919781;
        double r13919783 = r13919780 / r13919782;
        return r13919783;
}
↓
double f(double a) {
        double r13919784 = a;
        double r13919785 = acos(r13919784);
        double r13919786 = -r13919785;
        double r13919787 = r13919784 / r13919786;
        return r13919787;
}

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 2019107 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))