Average Error: 0.0 → 0.0
Time: 7.9s
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 r124168 = x;
        double r124169 = y;
        double r124170 = r124168 - r124169;
        double r124171 = 1.0;
        double r124172 = r124171 - r124169;
        double r124173 = r124170 / r124172;
        return r124173;
}
↓
double f(double x, double y) {
        double r124174 = x;
        double r124175 = 1.0;
        double r124176 = y;
        double r124177 = r124175 - r124176;
        double r124178 = r124174 / r124177;
        double r124179 = r124176 / r124177;
        double r124180 = r124178 - r124179;
        return r124180;
}

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 2019325 
(FPCore (x y)
  :name "Diagrams.Trail:splitAtParam  from diagrams-lib-1.3.0.3, C"
  :precision binary64
  (/ (- x y) (- 1 y)))