Average Error: 0.3 → 0.3
Time: 10.9s
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 r78111 = a;
        double r78112 = acos(r78111);
        double r78113 = -r78112;
        double r78114 = r78111 / r78113;
        return r78114;
}
↓
double f(double a) {
        double r78115 = a;
        double r78116 = acos(r78115);
        double r78117 = -r78116;
        double r78118 = r78115 / r78117;
        return r78118;
}

Error

Bits error versus a

Try it out

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 2019305 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))