Average Error: 0.2 → 0.2
Time: 3.0s
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 r113116 = a;
        double r113117 = acos(r113116);
        double r113118 = -r113117;
        double r113119 = r113116 / r113118;
        return r113119;
}
↓
double f(double a) {
        double r113120 = a;
        double r113121 = acos(r113120);
        double r113122 = -r113121;
        double r113123 = r113120 / r113122;
        return r113123;
}

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 2020020 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))