Average Error: 0.3 → 0.3
Time: 2.4s
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 r118198 = a;
        double r118199 = acos(r118198);
        double r118200 = -r118199;
        double r118201 = r118198 / r118200;
        return r118201;
}
↓
double f(double a) {
        double r118202 = a;
        double r118203 = acos(r118202);
        double r118204 = -r118203;
        double r118205 = r118202 / r118204;
        return r118205;
}

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 2020001 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))