Average Error: 0.2 → 0.2
Time: 17.6s
Precision: 64
\[x + \left(\left(y - x\right) \cdot 6\right) \cdot z\]
↓
\[x + 6 \cdot \left(z \cdot \left(y - x\right)\right)\]
x + \left(\left(y - x\right) \cdot 6\right) \cdot z
↓
x + 6 \cdot \left(z \cdot \left(y - x\right)\right)
double f(double x, double y, double z) {
        double r911630 = x;
        double r911631 = y;
        double r911632 = r911631 - r911630;
        double r911633 = 6.0;
        double r911634 = r911632 * r911633;
        double r911635 = z;
        double r911636 = r911634 * r911635;
        double r911637 = r911630 + r911636;
        return r911637;
}
↓
double f(double x, double y, double z) {
        double r911638 = x;
        double r911639 = 6.0;
        double r911640 = z;
        double r911641 = y;
        double r911642 = r911641 - r911638;
        double r911643 = r911640 * r911642;
        double r911644 = r911639 * r911643;
        double r911645 = r911638 + r911644;
        return r911645;
}

Error

Bits error versus x

Bits error versus y

Bits error versus z

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.2
Target0.2
Herbie0.2
\[x - \left(6 \cdot z\right) \cdot \left(x - y\right)\]

Derivation

  1. Initial program 0.2

    \[x + \left(\left(y - x\right) \cdot 6\right) \cdot z\]
  2. Using strategy rm

  3. Applied flip--24.9

    \[\leadsto x + \left(\color{blue}{\frac{y \cdot y - x \cdot x}{y + x}} \cdot 6\right) \cdot z\]

  4. Applied associate-*l/25.0

    \[\leadsto x + \color{blue}{\frac{\left(y \cdot y - x \cdot x\right) \cdot 6}{y + x}} \cdot z\]

  5. Applied associate-*l/28.4

    \[\leadsto x + \color{blue}{\frac{\left(\left(y \cdot y - x \cdot x\right) \cdot 6\right) \cdot z}{y + x}}\]

  6. Taylor expanded around 0 0.2

    \[\leadsto x + \color{blue}{\left(6 \cdot \left(z \cdot y\right) - 6 \cdot \left(x \cdot z\right)\right)}\]

  7. Simplified0.2

    \[\leadsto x + \color{blue}{6 \cdot \left(z \cdot \left(y - x\right)\right)}\]

  8. Final simplification0.2

    \[\leadsto x + 6 \cdot \left(z \cdot \left(y - x\right)\right)\]

Reproduce

herbie shell --seed 2020045 +o rules:numerics
(FPCore (x y z)
  :name "Data.Colour.RGBSpace.HSL:hsl from colour-2.3.3, E"
  :precision binary64

  :herbie-target
  (- x (* (* 6 z) (- x y)))

  (+ x (* (* (- y x) 6) z)))