Average Error: 0.2 → 0.2
Time: 20.1s
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 r70418 = a;
        double r70419 = acos(r70418);
        double r70420 = -r70419;
        double r70421 = r70418 / r70420;
        return r70421;
}
↓
double f(double a) {
        double r70422 = a;
        double r70423 = acos(r70422);
        double r70424 = -r70423;
        double r70425 = r70422 / r70424;
        return r70425;
}

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 2019323 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))