Average Error: 0.0 → 0.0
Time: 1.9s
Precision: 64
\[\frac{x - y}{x + y}\]
↓
\[\frac{x}{x + y} - \frac{y}{x + y}\]
\frac{x - y}{x + y}
↓
\frac{x}{x + y} - \frac{y}{x + y}
double f(double x, double y) {
        double r974745 = x;
        double r974746 = y;
        double r974747 = r974745 - r974746;
        double r974748 = r974745 + r974746;
        double r974749 = r974747 / r974748;
        return r974749;
}
↓
double f(double x, double y) {
        double r974750 = x;
        double r974751 = y;
        double r974752 = r974750 + r974751;
        double r974753 = r974750 / r974752;
        double r974754 = r974751 / r974752;
        double r974755 = r974753 - r974754;
        return r974755;
}

Error

Bits error versus x

Bits error versus y

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Results

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Target

Original0.0
Target0.0
Herbie0.0
\[\frac{x}{x + y} - \frac{y}{x + y}\]

Derivation

  1. Initial program 0.0

    \[\frac{x - y}{x + y}\]
  2. Using strategy rm

  3. Applied div-sub0.0

    \[\leadsto \color{blue}{\frac{x}{x + y} - \frac{y}{x + y}}\]

  4. Final simplification0.0

    \[\leadsto \frac{x}{x + y} - \frac{y}{x + y}\]

Reproduce

herbie shell --seed 2020025 
(FPCore (x y)
  :name "Data.Colour.RGB:hslsv from colour-2.3.3, D"
  :precision binary64

  :herbie-target
  (- (/ x (+ x y)) (/ y (+ x y)))

  (/ (- x y) (+ x y)))