Average Error: 0.2 → 0.2
Time: 3.2m
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 r22639143 = a;
        double r22639144 = acos(r22639143);
        double r22639145 = -r22639144;
        double r22639146 = r22639143 / r22639145;
        return r22639146;
}
↓
double f(double a) {
        double r22639147 = a;
        double r22639148 = acos(r22639147);
        double r22639149 = -r22639148;
        double r22639150 = r22639147 / r22639149;
        return r22639150;
}

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 2019112 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))