Average Error: 0.0 → 0.0
Time: 4.8s
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 r160478 = x;
        double r160479 = y;
        double r160480 = r160478 - r160479;
        double r160481 = 1.0;
        double r160482 = r160481 - r160479;
        double r160483 = r160480 / r160482;
        return r160483;
}
↓
double f(double x, double y) {
        double r160484 = x;
        double r160485 = 1.0;
        double r160486 = y;
        double r160487 = r160485 - r160486;
        double r160488 = r160484 / r160487;
        double r160489 = r160486 / r160487;
        double r160490 = r160488 - r160489;
        return r160490;
}

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 2019174 
(FPCore (x y)
  :name "Diagrams.Trail:splitAtParam  from diagrams-lib-1.3.0.3, C"
  (/ (- x y) (- 1.0 y)))