Average Error: 0.2 → 0.2
Time: 2.7m
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 r28922595 = a;
        double r28922596 = acos(r28922595);
        double r28922597 = -r28922596;
        double r28922598 = r28922595 / r28922597;
        return r28922598;
}
↓
double f(double a) {
        double r28922599 = a;
        double r28922600 = acos(r28922599);
        double r28922601 = -r28922600;
        double r28922602 = r28922599 / r28922601;
        return r28922602;
}

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 2019121 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))