Average Error: 0.2 → 0.2
Time: 13.0s
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 r3164347 = a;
        double r3164348 = acos(r3164347);
        double r3164349 = -r3164348;
        double r3164350 = r3164347 / r3164349;
        return r3164350;
}
↓
double f(double a) {
        double r3164351 = a;
        double r3164352 = acos(r3164351);
        double r3164353 = -r3164352;
        double r3164354 = r3164351 / r3164353;
        return r3164354;
}

Error

Bits error versus a

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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 2019130 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))