Average Error: 0.0 → 0.0
Time: 3.5s
Precision: 64
\[\frac{x + y}{y + y}\]
↓
\[\frac{1}{2} + \frac{x}{y} \cdot \frac{1}{2}\]
\frac{x + y}{y + y}
↓
\frac{1}{2} + \frac{x}{y} \cdot \frac{1}{2}
double f(double x, double y) {
        double r36340429 = x;
        double r36340430 = y;
        double r36340431 = r36340429 + r36340430;
        double r36340432 = r36340430 + r36340430;
        double r36340433 = r36340431 / r36340432;
        return r36340433;
}
↓
double f(double x, double y) {
        double r36340434 = 0.5;
        double r36340435 = x;
        double r36340436 = y;
        double r36340437 = r36340435 / r36340436;
        double r36340438 = r36340437 * r36340434;
        double r36340439 = r36340434 + r36340438;
        return r36340439;
}

Error

Bits error versus x

Bits error versus y

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.0
Target0.0
Herbie0.0
\[0.5 \cdot \frac{x}{y} + 0.5\]

Derivation

  1. Initial program 0.0

    \[\frac{x + y}{y + y}\]

  2. Taylor expanded around 0 0.0

    \[\leadsto \color{blue}{\frac{1}{2} \cdot \frac{x}{y} + \frac{1}{2}}\]

  3. Final simplification0.0

    \[\leadsto \frac{1}{2} + \frac{x}{y} \cdot \frac{1}{2}\]

Reproduce

herbie shell --seed 2019172 
(FPCore (x y)
  :name "Data.Random.Distribution.T:$ccdf from random-fu-0.2.6.2"

  :herbie-target
  (+ (* 0.5 (/ x y)) 0.5)

  (/ (+ x y) (+ y y)))