Average Error: 0.0 → 0.0
Time: 4.1s
Precision: 64
\[\frac{x - y}{1 - y}\]
↓
\[\frac{x}{1 - y} - \frac{y}{1 - y}\]
\frac{x - y}{1 - y}
↓
\frac{x}{1 - y} - \frac{y}{1 - y}
double f(double x, double y) {
        double r139738 = x;
        double r139739 = y;
        double r139740 = r139738 - r139739;
        double r139741 = 1.0;
        double r139742 = r139741 - r139739;
        double r139743 = r139740 / r139742;
        return r139743;
}
↓
double f(double x, double y) {
        double r139744 = x;
        double r139745 = 1.0;
        double r139746 = y;
        double r139747 = r139745 - r139746;
        double r139748 = r139744 / r139747;
        double r139749 = r139746 / r139747;
        double r139750 = r139748 - r139749;
        return r139750;
}

Error

Bits error versus x

Bits error versus y

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.0

    \[\frac{x - y}{1 - y}\]
  2. Using strategy rm

  3. Applied div-sub0.0

    \[\leadsto \color{blue}{\frac{x}{1 - y} - \frac{y}{1 - y}}\]

  4. Final simplification0.0

    \[\leadsto \frac{x}{1 - y} - \frac{y}{1 - y}\]

Reproduce

herbie shell --seed 2019322 
(FPCore (x y)
  :name "Diagrams.Trail:splitAtParam  from diagrams-lib-1.3.0.3, C"
  :precision binary64
  (/ (- x y) (- 1 y)))