Average Error: 0.2 → 0.2
Time: 20.4s
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 r12974 = a;
        double r12975 = acos(r12974);
        double r12976 = -r12975;
        double r12977 = r12974 / r12976;
        return r12977;
}
↓
double f(double a) {
        double r12978 = a;
        double r12979 = acos(r12978);
        double r12980 = -r12979;
        double r12981 = r12978 / r12980;
        return r12981;
}

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 2019310 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))