Average Error: 0.0 → 0.0
Time: 6.9s
Precision: 64
\[2 \cdot \left(x \cdot x - x \cdot y\right)\]
↓
\[\left(x \cdot \left(x - y\right)\right) \cdot 2\]
2 \cdot \left(x \cdot x - x \cdot y\right)
↓
\left(x \cdot \left(x - y\right)\right) \cdot 2
double f(double x, double y) {
        double r661254 = 2.0;
        double r661255 = x;
        double r661256 = r661255 * r661255;
        double r661257 = y;
        double r661258 = r661255 * r661257;
        double r661259 = r661256 - r661258;
        double r661260 = r661254 * r661259;
        return r661260;
}
↓
double f(double x, double y) {
        double r661261 = x;
        double r661262 = y;
        double r661263 = r661261 - r661262;
        double r661264 = r661261 * r661263;
        double r661265 = 2.0;
        double r661266 = r661264 * r661265;
        return r661266;
}

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
\[\left(x \cdot 2\right) \cdot \left(x - y\right)\]

Derivation

  1. Initial program 0.0

    \[2 \cdot \left(x \cdot x - x \cdot y\right)\]

  2. Simplified0.0

    \[\leadsto \color{blue}{\left(x \cdot \left(x - y\right)\right) \cdot 2}\]

  3. Final simplification0.0

    \[\leadsto \left(x \cdot \left(x - y\right)\right) \cdot 2\]

Reproduce

herbie shell --seed 2020042 
(FPCore (x y)
  :name "Linear.Matrix:fromQuaternion from linear-1.19.1.3, A"
  :precision binary64

  :herbie-target
  (* (* x 2) (- x y))

  (* 2 (- (* x x) (* x y))))