Average Error: 0.2 → 0.2
Time: 24.8s
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 r84873 = a;
        double r84874 = acos(r84873);
        double r84875 = -r84874;
        double r84876 = r84873 / r84875;
        return r84876;
}
↓
double f(double a) {
        double r84877 = a;
        double r84878 = acos(r84877);
        double r84879 = -r84878;
        double r84880 = r84877 / r84879;
        return r84880;
}

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 2019303 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))