Average Error: 0.2 → 0.2
Time: 3.4s
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 r194067 = a;
        double r194068 = acos(r194067);
        double r194069 = -r194068;
        double r194070 = r194067 / r194069;
        return r194070;
}
↓
double f(double a) {
        double r194071 = a;
        double r194072 = acos(r194071);
        double r194073 = -r194072;
        double r194074 = r194071 / r194073;
        return r194074;
}

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 2019353 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))