Average Error: 0.3 → 0.2
Time: 22.3s
Precision: 64
\[\left(\left(x \cdot 3\right) \cdot y\right) \cdot y\]
↓
\[\left(3 \cdot \left(x \cdot y\right)\right) \cdot y\]
\left(\left(x \cdot 3\right) \cdot y\right) \cdot y
↓
\left(3 \cdot \left(x \cdot y\right)\right) \cdot y
double f(double x, double y) {
        double r484242 = x;
        double r484243 = 3.0;
        double r484244 = r484242 * r484243;
        double r484245 = y;
        double r484246 = r484244 * r484245;
        double r484247 = r484246 * r484245;
        return r484247;
}
↓
double f(double x, double y) {
        double r484248 = 3.0;
        double r484249 = x;
        double r484250 = y;
        double r484251 = r484249 * r484250;
        double r484252 = r484248 * r484251;
        double r484253 = r484252 * r484250;
        return r484253;
}

Error

Bits error versus x

Bits error versus y

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.3
Target0.2
Herbie0.2
\[\left(x \cdot \left(3 \cdot y\right)\right) \cdot y\]

Derivation

  1. Initial program 0.3

    \[\left(\left(x \cdot 3\right) \cdot y\right) \cdot y\]
  2. Using strategy rm

  3. Applied associate-*l*0.2

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

  4. Simplified0.2

    \[\leadsto \left(x \cdot \color{blue}{\left(y \cdot 3\right)}\right) \cdot y\]
  5. Using strategy rm

  6. Applied *-un-lft-identity0.2

    \[\leadsto \left(\color{blue}{\left(1 \cdot x\right)} \cdot \left(y \cdot 3\right)\right) \cdot y\]

  7. Applied associate-*l*0.2

    \[\leadsto \color{blue}{\left(1 \cdot \left(x \cdot \left(y \cdot 3\right)\right)\right)} \cdot y\]

  8. Simplified0.2

    \[\leadsto \left(1 \cdot \color{blue}{\left(3 \cdot \left(x \cdot y\right)\right)}\right) \cdot y\]

  9. Final simplification0.2

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

Reproduce

herbie shell --seed 2019326 
(FPCore (x y)
  :name "Diagrams.Segment:$catParam from diagrams-lib-1.3.0.3, B"
  :precision binary64

  :herbie-target
  (* (* x (* 3 y)) y)

  (* (* (* x 3) y) y))