Average Error: 0.3 → 0.3
Time: 3.1s
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 r102277 = a;
        double r102278 = acos(r102277);
        double r102279 = -r102278;
        double r102280 = r102277 / r102279;
        return r102280;
}
↓
double f(double a) {
        double r102281 = a;
        double r102282 = acos(r102281);
        double r102283 = -r102282;
        double r102284 = r102281 / r102283;
        return r102284;
}

Error

Bits error versus a

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.3

    \[\frac{a}{-\cos^{-1} a}\]

  2. Final simplification0.3

    \[\leadsto \frac{a}{-\cos^{-1} a}\]

Reproduce

herbie shell --seed 2020081 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))