Average Error: 0.2 → 0.2
Time: 13.8s
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 r113201 = a;
        double r113202 = acos(r113201);
        double r113203 = -r113202;
        double r113204 = r113201 / r113203;
        return r113204;
}
↓
double f(double a) {
        double r113205 = a;
        double r113206 = acos(r113205);
        double r113207 = -r113206;
        double r113208 = r113205 / r113207;
        return r113208;
}

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 2020042 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))