Average Error: 0.3 → 0.3
Time: 15.2s
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 r2978609 = a;
        double r2978610 = acos(r2978609);
        double r2978611 = -r2978610;
        double r2978612 = r2978609 / r2978611;
        return r2978612;
}
↓
double f(double a) {
        double r2978613 = a;
        double r2978614 = acos(r2978613);
        double r2978615 = -r2978614;
        double r2978616 = r2978613 / r2978615;
        return r2978616;
}

Error

Bits error versus a

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.3

    \[\frac{a}{-\cos^{-1} a}\]

  2. Final simplification0.3

    \[\leadsto \frac{a}{-\cos^{-1} a}\]

Reproduce

herbie shell --seed 2019164 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))