Average Error: 0.2 → 0.2
Time: 1.9m
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 r4078338 = a;
        double r4078339 = acos(r4078338);
        double r4078340 = -r4078339;
        double r4078341 = r4078338 / r4078340;
        return r4078341;
}
↓
double f(double a) {
        double r4078342 = a;
        double r4078343 = acos(r4078342);
        double r4078344 = -r4078343;
        double r4078345 = r4078342 / r4078344;
        return r4078345;
}

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 2019135 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))