Average Error: 0.2 → 0.2
Time: 13.8s
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 r115079 = a;
        double r115080 = acos(r115079);
        double r115081 = -r115080;
        double r115082 = r115079 / r115081;
        return r115082;
}
↓
double f(double a) {
        double r115083 = a;
        double r115084 = acos(r115083);
        double r115085 = -r115084;
        double r115086 = r115083 / r115085;
        return r115086;
}

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 2019350 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))