Average Error: 0.2 → 0.2
Time: 3.7s
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 r102279 = a;
        double r102280 = acos(r102279);
        double r102281 = -r102280;
        double r102282 = r102279 / r102281;
        return r102282;
}
↓
double f(double a) {
        double r102283 = a;
        double r102284 = acos(r102283);
        double r102285 = -r102284;
        double r102286 = r102283 / r102285;
        return r102286;
}

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 2020047 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))