Average Error: 0.2 → 0.2
Time: 3.5s
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 r143051 = a;
        double r143052 = acos(r143051);
        double r143053 = -r143052;
        double r143054 = r143051 / r143053;
        return r143054;
}
↓
double f(double a) {
        double r143055 = a;
        double r143056 = acos(r143055);
        double r143057 = -r143056;
        double r143058 = r143055 / r143057;
        return r143058;
}

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 2020057 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))