Average Error: 0.3 → 0.3
Time: 38.5s
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 r220569 = a;
        double r220570 = acos(r220569);
        double r220571 = -r220570;
        double r220572 = r220569 / r220571;
        return r220572;
}
↓
double f(double a) {
        double r220573 = a;
        double r220574 = acos(r220573);
        double r220575 = -r220574;
        double r220576 = r220573 / r220575;
        return r220576;
}

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))))