Average Error: 0.2 → 0.2
Time: 14.1s
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 r3387329 = a;
        double r3387330 = acos(r3387329);
        double r3387331 = -r3387330;
        double r3387332 = r3387329 / r3387331;
        return r3387332;
}
↓
double f(double a) {
        double r3387333 = a;
        double r3387334 = acos(r3387333);
        double r3387335 = -r3387334;
        double r3387336 = r3387333 / r3387335;
        return r3387336;
}

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 2019165 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))