Average Error: 0.2 → 0.2
Time: 11.0s
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 r147403 = a;
        double r147404 = acos(r147403);
        double r147405 = -r147404;
        double r147406 = r147403 / r147405;
        return r147406;
}
↓
double f(double a) {
        double r147407 = a;
        double r147408 = acos(r147407);
        double r147409 = -r147408;
        double r147410 = r147407 / r147409;
        return r147410;
}

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 2020047 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))