Average Error: 0.2 → 0.2
Time: 13.2s
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 r118701 = a;
        double r118702 = acos(r118701);
        double r118703 = -r118702;
        double r118704 = r118701 / r118703;
        return r118704;
}
↓
double f(double a) {
        double r118705 = a;
        double r118706 = acos(r118705);
        double r118707 = -r118706;
        double r118708 = r118705 / r118707;
        return r118708;
}

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 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))