Average Error: 0.2 → 0.2
Time: 2.8m
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 r14085589 = a;
        double r14085590 = acos(r14085589);
        double r14085591 = -r14085590;
        double r14085592 = r14085589 / r14085591;
        return r14085592;
}
↓
double f(double a) {
        double r14085593 = a;
        double r14085594 = acos(r14085593);
        double r14085595 = -r14085594;
        double r14085596 = r14085593 / r14085595;
        return r14085596;
}

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 2019119 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))