Average Error: 0.3 → 0.3
Time: 16.5s
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 r74202 = a;
        double r74203 = acos(r74202);
        double r74204 = -r74203;
        double r74205 = r74202 / r74204;
        return r74205;
}
↓
double f(double a) {
        double r74206 = a;
        double r74207 = acos(r74206);
        double r74208 = -r74207;
        double r74209 = r74206 / r74208;
        return r74209;
}

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 2019305 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))