Average Error: 0.3 → 0.3
Time: 18.8s
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 r72307 = a;
        double r72308 = acos(r72307);
        double r72309 = -r72308;
        double r72310 = r72307 / r72309;
        return r72310;
}
↓
double f(double a) {
        double r72311 = a;
        double r72312 = acos(r72311);
        double r72313 = -r72312;
        double r72314 = r72311 / r72313;
        return r72314;
}

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 2019347 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))