Average Error: 0.3 → 0.3
Time: 5.5s
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 r383 = a;
        double r384 = acos(r383);
        double r385 = -r384;
        double r386 = r383 / r385;
        return r386;
}
↓
double f(double a) {
        double r387 = a;
        double r388 = acos(r387);
        double r389 = -r388;
        double r390 = r387 / r389;
        return r390;
}

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 2020025 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))