Average Error: 0.2 → 0.2
Time: 26.1s
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 r95772 = a;
        double r95773 = acos(r95772);
        double r95774 = -r95773;
        double r95775 = r95772 / r95774;
        return r95775;
}
↓
double f(double a) {
        double r95776 = a;
        double r95777 = acos(r95776);
        double r95778 = -r95777;
        double r95779 = r95776 / r95778;
        return r95779;
}

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 2019325 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))