Average Error: 0.2 → 0.2
Time: 2.5s
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 r91456 = a;
        double r91457 = acos(r91456);
        double r91458 = -r91457;
        double r91459 = r91456 / r91458;
        return r91459;
}
↓
double f(double a) {
        double r91460 = a;
        double r91461 = acos(r91460);
        double r91462 = -r91461;
        double r91463 = r91460 / r91462;
        return r91463;
}

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 2020049 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))