Average Error: 0.2 → 0.2
Time: 15.8s
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 r3270585 = a;
        double r3270586 = acos(r3270585);
        double r3270587 = -r3270586;
        double r3270588 = r3270585 / r3270587;
        return r3270588;
}
↓
double f(double a) {
        double r3270589 = a;
        double r3270590 = acos(r3270589);
        double r3270591 = -r3270590;
        double r3270592 = r3270589 / r3270591;
        return r3270592;
}

Error

Bits error versus a

Try it out

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 2019162 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))