Average Error: 0.0 → 0.0
Time: 2.9s
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 r1079111 = x;
        double r1079112 = y;
        double r1079113 = r1079111 - r1079112;
        double r1079114 = r1079111 + r1079112;
        double r1079115 = r1079113 / r1079114;
        return r1079115;
}
↓
double f(double x, double y) {
        double r1079116 = x;
        double r1079117 = y;
        double r1079118 = r1079116 + r1079117;
        double r1079119 = r1079116 / r1079118;
        double r1079120 = r1079117 / r1079118;
        double r1079121 = r1079119 - r1079120;
        return r1079121;
}

Error

Bits error versus x

Bits error versus y

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Results

Enter valid numbers for all inputs

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 2019353 
(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)))