Average Error: 0.3 → 0.3
Time: 15.4s
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 r4869042 = a;
        double r4869043 = acos(r4869042);
        double r4869044 = -r4869043;
        double r4869045 = r4869042 / r4869044;
        return r4869045;
}
↓
double f(double a) {
        double r4869046 = a;
        double r4869047 = acos(r4869046);
        double r4869048 = -r4869047;
        double r4869049 = r4869046 / r4869048;
        return r4869049;
}

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 2019172 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))