Average Error: 0.3 → 0.3
Time: 3.7m
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 r23685988 = a;
        double r23685989 = acos(r23685988);
        double r23685990 = -r23685989;
        double r23685991 = r23685988 / r23685990;
        return r23685991;
}
↓
double f(double a) {
        double r23685992 = a;
        double r23685993 = acos(r23685992);
        double r23685994 = -r23685993;
        double r23685995 = r23685992 / r23685994;
        return r23685995;
}

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 2019125 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))