Average Error: 0.3 → 0.3
Time: 11.4s
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 r118147 = a;
        double r118148 = acos(r118147);
        double r118149 = -r118148;
        double r118150 = r118147 / r118149;
        return r118150;
}
↓
double f(double a) {
        double r118151 = a;
        double r118152 = acos(r118151);
        double r118153 = -r118152;
        double r118154 = r118151 / r118153;
        return r118154;
}

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 2020046 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))