Average Error: 0.2 → 0.2
Time: 2.8s
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 r161099 = a;
        double r161100 = acos(r161099);
        double r161101 = -r161100;
        double r161102 = r161099 / r161101;
        return r161102;
}
↓
double f(double a) {
        double r161103 = a;
        double r161104 = acos(r161103);
        double r161105 = -r161104;
        double r161106 = r161103 / r161105;
        return r161106;
}

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 2019322 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))