Average Error: 12.2 → 1.9
Time: 11.0s
Precision: 64
\[\frac{x \cdot \left(y - z\right)}{y}\]
↓
\[\begin{array}{l} \mathbf{if}\;\frac{x \cdot \left(y - z\right)}{y} \le 2.842562368772701429645805907300691455493 \cdot 10^{-91}:\\ \;\;\;\;\frac{x}{\frac{y}{y - z}}\\ \mathbf{elif}\;\frac{x \cdot \left(y - z\right)}{y} \le 3.432540453061663231003216489606318759457 \cdot 10^{307}:\\ \;\;\;\;\frac{x \cdot \left(y - z\right)}{y}\\ \mathbf{else}:\\ \;\;\;\;x \cdot \frac{y - z}{y}\\ \end{array}\]
\frac{x \cdot \left(y - z\right)}{y}
↓
\begin{array}{l}
\mathbf{if}\;\frac{x \cdot \left(y - z\right)}{y} \le 2.842562368772701429645805907300691455493 \cdot 10^{-91}:\\
\;\;\;\;\frac{x}{\frac{y}{y - z}}\\

\mathbf{elif}\;\frac{x \cdot \left(y - z\right)}{y} \le 3.432540453061663231003216489606318759457 \cdot 10^{307}:\\
\;\;\;\;\frac{x \cdot \left(y - z\right)}{y}\\

\mathbf{else}:\\
\;\;\;\;x \cdot \frac{y - z}{y}\\

\end{array}
double f(double x, double y, double z) {
        double r475594 = x;
        double r475595 = y;
        double r475596 = z;
        double r475597 = r475595 - r475596;
        double r475598 = r475594 * r475597;
        double r475599 = r475598 / r475595;
        return r475599;
}
↓
double f(double x, double y, double z) {
        double r475600 = x;
        double r475601 = y;
        double r475602 = z;
        double r475603 = r475601 - r475602;
        double r475604 = r475600 * r475603;
        double r475605 = r475604 / r475601;
        double r475606 = 2.8425623687727014e-91;
        bool r475607 = r475605 <= r475606;
        double r475608 = r475601 / r475603;
        double r475609 = r475600 / r475608;
        double r475610 = 3.432540453061663e+307;
        bool r475611 = r475605 <= r475610;
        double r475612 = r475603 / r475601;
        double r475613 = r475600 * r475612;
        double r475614 = r475611 ? r475605 : r475613;
        double r475615 = r475607 ? r475609 : r475614;
        return r475615;
}

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

Original12.2
Target3.3
Herbie1.9
\[\begin{array}{l} \mathbf{if}\;z \lt -2.060202331921739024383612783691266533098 \cdot 10^{104}:\\ \;\;\;\;x - \frac{z \cdot x}{y}\\ \mathbf{elif}\;z \lt 1.693976601382852594702773997610248441465 \cdot 10^{213}:\\ \;\;\;\;\frac{x}{\frac{y}{y - z}}\\ \mathbf{else}:\\ \;\;\;\;\left(y - z\right) \cdot \frac{x}{y}\\ \end{array}\]

Derivation

  1. Split input into 3 regimes

  2. if (/ (* x (- y z)) y) < 2.8425623687727014e-91

    1. Initial program 11.2

      \[\frac{x \cdot \left(y - z\right)}{y}\]
    2. Using strategy rm

    3. Applied associate-/l*2.8

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

    if 2.8425623687727014e-91 < (/ (* x (- y z)) y) < 3.432540453061663e+307

    1. Initial program 0.3

      \[\frac{x \cdot \left(y - z\right)}{y}\]

    if 3.432540453061663e+307 < (/ (* x (- y z)) y)

    1. Initial program 64.0

      \[\frac{x \cdot \left(y - z\right)}{y}\]
    2. Using strategy rm

    3. Applied *-un-lft-identity64.0

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

    4. Applied times-frac0.0

      \[\leadsto \color{blue}{\frac{x}{1} \cdot \frac{y - z}{y}}\]

    5. Simplified0.0

      \[\leadsto \color{blue}{x} \cdot \frac{y - z}{y}\]
  3. Recombined 3 regimes into one program.

  4. Final simplification1.9

    \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{x \cdot \left(y - z\right)}{y} \le 2.842562368772701429645805907300691455493 \cdot 10^{-91}:\\ \;\;\;\;\frac{x}{\frac{y}{y - z}}\\ \mathbf{elif}\;\frac{x \cdot \left(y - z\right)}{y} \le 3.432540453061663231003216489606318759457 \cdot 10^{307}:\\ \;\;\;\;\frac{x \cdot \left(y - z\right)}{y}\\ \mathbf{else}:\\ \;\;\;\;x \cdot \frac{y - z}{y}\\ \end{array}\]

Reproduce

herbie shell --seed 2019323 
(FPCore (x y z)
  :name "Diagrams.Backend.Cairo.Internal:setTexture from diagrams-cairo-1.3.0.3"
  :precision binary64

  :herbie-target
  (if (< z -2.060202331921739e+104) (- x (/ (* z x) y)) (if (< z 1.6939766013828526e+213) (/ x (/ y (- y z))) (* (- y z) (/ x y))))

  (/ (* x (- y z)) y))