Average Error: 0.1 → 0.1
Time: 4.9s
Precision: 64
\[\left(\left(x \cdot x + y \cdot y\right) + y \cdot y\right) + y \cdot y\]
↓
\[x \cdot x + \left(3 \cdot y\right) \cdot y\]
\left(\left(x \cdot x + y \cdot y\right) + y \cdot y\right) + y \cdot y
↓
x \cdot x + \left(3 \cdot y\right) \cdot y
double f(double x, double y) {
        double r2726 = x;
        double r2727 = r2726 * r2726;
        double r2728 = y;
        double r2729 = r2728 * r2728;
        double r2730 = r2727 + r2729;
        double r2731 = r2730 + r2729;
        double r2732 = r2731 + r2729;
        return r2732;
}
↓
double f(double x, double y) {
        double r2733 = x;
        double r2734 = r2733 * r2733;
        double r2735 = 3.0;
        double r2736 = y;
        double r2737 = r2735 * r2736;
        double r2738 = r2737 * r2736;
        double r2739 = r2734 + r2738;
        return r2739;
}

Error

Bits error versus x

Bits error versus y

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.1
Target0.1
Herbie0.1
\[x \cdot x + y \cdot \left(y + \left(y + y\right)\right)\]

Derivation

  1. Initial program 0.1

    \[\left(\left(x \cdot x + y \cdot y\right) + y \cdot y\right) + y \cdot y\]
  2. Using strategy rm

  3. Applied associate-+l+0.1

    \[\leadsto \color{blue}{\left(x \cdot x + \left(y \cdot y + y \cdot y\right)\right)} + y \cdot y\]

  4. Simplified0.1

    \[\leadsto \left(x \cdot x + \color{blue}{y \cdot \left(y + y\right)}\right) + y \cdot y\]
  5. Using strategy rm

  6. Applied associate-+l+0.1

    \[\leadsto \color{blue}{x \cdot x + \left(y \cdot \left(y + y\right) + y \cdot y\right)}\]

  7. Simplified0.1

    \[\leadsto x \cdot x + \color{blue}{\left(3 \cdot y\right) \cdot y}\]

  8. Final simplification0.1

    \[\leadsto x \cdot x + \left(3 \cdot y\right) \cdot y\]

Reproduce

herbie shell --seed 2020025 
(FPCore (x y)
  :name "Linear.Quaternion:$c/ from linear-1.19.1.3, E"
  :precision binary64

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

  (+ (+ (+ (* x x) (* y y)) (* y y)) (* y y)))