Average Error: 0.0 → 0.0
Time: 2.3s
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 r205100 = x;
        double r205101 = y;
        double r205102 = r205100 - r205101;
        double r205103 = 1.0;
        double r205104 = r205103 - r205101;
        double r205105 = r205102 / r205104;
        return r205105;
}
↓
double f(double x, double y) {
        double r205106 = x;
        double r205107 = 1.0;
        double r205108 = y;
        double r205109 = r205107 - r205108;
        double r205110 = r205106 / r205109;
        double r205111 = r205108 / r205109;
        double r205112 = r205110 - r205111;
        return r205112;
}

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 2020021 
(FPCore (x y)
  :name "Diagrams.Trail:splitAtParam  from diagrams-lib-1.3.0.3, C"
  :precision binary64
  (/ (- x y) (- 1 y)))