Average Error: 0.3 → 0.3
Time: 16.3s
Precision: 64
\[\frac{x}{y \cdot 3}\]
↓
\[\frac{\frac{x}{y}}{3}\]
\frac{x}{y \cdot 3}
↓
\frac{\frac{x}{y}}{3}
double f(double x, double y) {
        double r27085958 = x;
        double r27085959 = y;
        double r27085960 = 3.0;
        double r27085961 = r27085959 * r27085960;
        double r27085962 = r27085958 / r27085961;
        return r27085962;
}
↓
double f(double x, double y) {
        double r27085963 = x;
        double r27085964 = y;
        double r27085965 = r27085963 / r27085964;
        double r27085966 = 3.0;
        double r27085967 = r27085965 / r27085966;
        return r27085967;
}

Error

Bits error versus x

Bits error versus y

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Results

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Target

Original0.3
Target0.3
Herbie0.3
\[\frac{\frac{x}{y}}{3}\]

Derivation

  1. Initial program 0.3

    \[\frac{x}{y \cdot 3}\]
  2. Using strategy rm

  3. Applied associate-/r*0.3

    \[\leadsto \color{blue}{\frac{\frac{x}{y}}{3}}\]

  4. Final simplification0.3

    \[\leadsto \frac{\frac{x}{y}}{3}\]

Reproduce

herbie shell --seed 2019170 +o rules:numerics
(FPCore (x y)
  :name "Diagrams.Solve.Polynomial:cubForm  from diagrams-solve-0.1, C"

  :herbie-target
  (/ (/ x y) 3.0)

  (/ x (* y 3.0)))