Average Error: 0.0 → 0.0
Time: 19.5s
Precision: 64
\[\frac{-\left(f + n\right)}{f - n}\]
↓
\[\frac{-\left(f + n\right)}{f - n}\]
\frac{-\left(f + n\right)}{f - n}
↓
\frac{-\left(f + n\right)}{f - n}
double f(double f, double n) {
        double r1962183 = f;
        double r1962184 = n;
        double r1962185 = r1962183 + r1962184;
        double r1962186 = -r1962185;
        double r1962187 = r1962183 - r1962184;
        double r1962188 = r1962186 / r1962187;
        return r1962188;
}
↓
double f(double f, double n) {
        double r1962189 = f;
        double r1962190 = n;
        double r1962191 = r1962189 + r1962190;
        double r1962192 = -r1962191;
        double r1962193 = r1962189 - r1962190;
        double r1962194 = r1962192 / r1962193;
        return r1962194;
}

Error

Bits error versus f

Bits error versus n

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Results

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Derivation

  1. Initial program 0.0

    \[\frac{-\left(f + n\right)}{f - n}\]

  2. Final simplification0.0

    \[\leadsto \frac{-\left(f + n\right)}{f - n}\]

Reproduce

herbie shell --seed 2019173 
(FPCore (f n)
  :name "subtraction fraction"
  (/ (- (+ f n)) (- f n)))