Average Error: 0.0 → 0.0
Time: 12.8s
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 r8978316 = x;
        double r8978317 = y;
        double r8978318 = r8978316 - r8978317;
        double r8978319 = 1.0;
        double r8978320 = r8978319 - r8978317;
        double r8978321 = r8978318 / r8978320;
        return r8978321;
}
↓
double f(double x, double y) {
        double r8978322 = x;
        double r8978323 = 1.0;
        double r8978324 = y;
        double r8978325 = r8978323 - r8978324;
        double r8978326 = r8978322 / r8978325;
        double r8978327 = r8978324 / r8978325;
        double r8978328 = r8978326 - r8978327;
        return r8978328;
}

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 2019169 
(FPCore (x y)
  :name "Diagrams.Trail:splitAtParam  from diagrams-lib-1.3.0.3, C"
  (/ (- x y) (- 1.0 y)))