Average Error: 0.2 → 0.2
Time: 31.5s
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 r6992927 = a;
        double r6992928 = acos(r6992927);
        double r6992929 = -r6992928;
        double r6992930 = r6992927 / r6992929;
        return r6992930;
}
↓
double f(double a) {
        double r6992931 = a;
        double r6992932 = acos(r6992931);
        double r6992933 = -r6992932;
        double r6992934 = r6992931 / r6992933;
        return r6992934;
}

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 2019149 
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))