Average Error: 0.2 → 0.2
Time: 14.6s
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 r4084220 = a;
        double r4084221 = acos(r4084220);
        double r4084222 = -r4084221;
        double r4084223 = r4084220 / r4084222;
        return r4084223;
}
↓
double f(double a) {
        double r4084224 = a;
        double r4084225 = acos(r4084224);
        double r4084226 = -r4084225;
        double r4084227 = r4084224 / r4084226;
        return r4084227;
}

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 2019163 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))