Average Error: 0.2 → 0.2
Time: 20.5s
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 r6280721 = a;
        double r6280722 = acos(r6280721);
        double r6280723 = -r6280722;
        double r6280724 = r6280721 / r6280723;
        return r6280724;
}
↓
double f(double a) {
        double r6280725 = a;
        double r6280726 = acos(r6280725);
        double r6280727 = -r6280726;
        double r6280728 = r6280725 / r6280727;
        return r6280728;
}

Error

Bits error versus a

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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 2019170 
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))