Average Error: 0.3 → 0.3
Time: 12.9s
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 r70452 = a;
        double r70453 = acos(r70452);
        double r70454 = -r70453;
        double r70455 = r70452 / r70454;
        return r70455;
}
↓
double f(double a) {
        double r70456 = a;
        double r70457 = acos(r70456);
        double r70458 = -r70457;
        double r70459 = r70456 / r70458;
        return r70459;
}

Error

Bits error versus a

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.3

    \[\frac{a}{-\cos^{-1} a}\]

  2. Final simplification0.3

    \[\leadsto \frac{a}{-\cos^{-1} a}\]

Reproduce

herbie shell --seed 2019212 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))