Average Error: 10.3 → 0.2
Time: 3.2s
Precision: 64
\[\frac{x}{y \cdot y}\]
↓
\[\frac{\frac{x}{y}}{y}\]
\frac{x}{y \cdot y}
↓
\frac{\frac{x}{y}}{y}
double f(double x, double y) {
        double r376489 = x;
        double r376490 = y;
        double r376491 = r376490 * r376490;
        double r376492 = r376489 / r376491;
        return r376492;
}
↓
double f(double x, double y) {
        double r376493 = x;
        double r376494 = y;
        double r376495 = r376493 / r376494;
        double r376496 = r376495 / r376494;
        return r376496;
}

Error

Bits error versus x

Bits error versus y

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Results

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Target

Original10.3
Target0.2
Herbie0.2
\[\frac{\frac{x}{y}}{y}\]

Derivation

  1. Initial program 10.3

    \[\frac{x}{y \cdot y}\]
  2. Using strategy rm

  3. Applied associate-/r*0.2

    \[\leadsto \color{blue}{\frac{\frac{x}{y}}{y}}\]

  4. Final simplification0.2

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

Reproduce

herbie shell --seed 2020065 
(FPCore (x y)
  :name "Physics.ForceLayout:coulombForce from force-layout-0.4.0.2"
  :precision binary64

  :herbie-target
  (/ (/ x y) y)

  (/ x (* y y)))