Average Error: 14.7 → 0.8
Time: 28.2s
Precision: 64
\[x \cdot \frac{\frac{y}{z} \cdot t}{t}\]
↓
\[\begin{array}{l} \mathbf{if}\;\frac{y}{z} = -\infty:\\ \;\;\;\;y \cdot \frac{x}{z}\\ \mathbf{elif}\;\frac{y}{z} \le -1.777824700739059504027072604237357294271 \cdot 10^{-189}:\\ \;\;\;\;\frac{y}{z} \cdot x\\ \mathbf{elif}\;\frac{y}{z} \le 6.194701076531514820787324531303599279908 \cdot 10^{-141}:\\ \;\;\;\;\frac{x \cdot y}{z}\\ \mathbf{elif}\;\frac{y}{z} \le 4.487328446405641062208224523193589026226 \cdot 10^{149}:\\ \;\;\;\;\frac{y}{z} \cdot x\\ \mathbf{else}:\\ \;\;\;\;y \cdot \frac{x}{z}\\ \end{array}\]
x \cdot \frac{\frac{y}{z} \cdot t}{t}
↓
\begin{array}{l}
\mathbf{if}\;\frac{y}{z} = -\infty:\\
\;\;\;\;y \cdot \frac{x}{z}\\

\mathbf{elif}\;\frac{y}{z} \le -1.777824700739059504027072604237357294271 \cdot 10^{-189}:\\
\;\;\;\;\frac{y}{z} \cdot x\\

\mathbf{elif}\;\frac{y}{z} \le 6.194701076531514820787324531303599279908 \cdot 10^{-141}:\\
\;\;\;\;\frac{x \cdot y}{z}\\

\mathbf{elif}\;\frac{y}{z} \le 4.487328446405641062208224523193589026226 \cdot 10^{149}:\\
\;\;\;\;\frac{y}{z} \cdot x\\

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

\end{array}
double f(double x, double y, double z, double t) {
        double r77204 = x;
        double r77205 = y;
        double r77206 = z;
        double r77207 = r77205 / r77206;
        double r77208 = t;
        double r77209 = r77207 * r77208;
        double r77210 = r77209 / r77208;
        double r77211 = r77204 * r77210;
        return r77211;
}
↓
double f(double x, double y, double z, double __attribute__((unused)) t) {
        double r77212 = y;
        double r77213 = z;
        double r77214 = r77212 / r77213;
        double r77215 = -inf.0;
        bool r77216 = r77214 <= r77215;
        double r77217 = x;
        double r77218 = r77217 / r77213;
        double r77219 = r77212 * r77218;
        double r77220 = -1.7778247007390595e-189;
        bool r77221 = r77214 <= r77220;
        double r77222 = r77214 * r77217;
        double r77223 = 6.194701076531515e-141;
        bool r77224 = r77214 <= r77223;
        double r77225 = r77217 * r77212;
        double r77226 = r77225 / r77213;
        double r77227 = 4.487328446405641e+149;
        bool r77228 = r77214 <= r77227;
        double r77229 = r77228 ? r77222 : r77219;
        double r77230 = r77224 ? r77226 : r77229;
        double r77231 = r77221 ? r77222 : r77230;
        double r77232 = r77216 ? r77219 : r77231;
        return r77232;
}

Error

Bits error versus x

Bits error versus y

Bits error versus z

Bits error versus t

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Split input into 3 regimes

  2. if (/ y z) < -inf.0 or 4.487328446405641e+149 < (/ y z)

    1. Initial program 41.5

      \[x \cdot \frac{\frac{y}{z} \cdot t}{t}\]

    2. Simplified29.8

      \[\leadsto \color{blue}{\frac{y}{z} \cdot x}\]
    3. Using strategy rm

    4. Applied div-inv29.9

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

    5. Applied associate-*l*1.9

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

    6. Simplified1.8

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

    if -inf.0 < (/ y z) < -1.7778247007390595e-189 or 6.194701076531515e-141 < (/ y z) < 4.487328446405641e+149

    1. Initial program 7.9

      \[x \cdot \frac{\frac{y}{z} \cdot t}{t}\]

    2. Simplified0.2

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

    if -1.7778247007390595e-189 < (/ y z) < 6.194701076531515e-141

    1. Initial program 17.3

      \[x \cdot \frac{\frac{y}{z} \cdot t}{t}\]

    2. Simplified9.0

      \[\leadsto \color{blue}{\frac{y}{z} \cdot x}\]
    3. Using strategy rm

    4. Applied add-cube-cbrt9.5

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

    5. Applied associate-*l*9.5

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

    7. Applied div-inv9.4

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

    8. Applied cbrt-prod9.4

      \[\leadsto \left(\sqrt[3]{\frac{y}{z}} \cdot \sqrt[3]{\frac{y}{z}}\right) \cdot \left(\color{blue}{\left(\sqrt[3]{y} \cdot \sqrt[3]{\frac{1}{z}}\right)} \cdot x\right)\]
    9. Using strategy rm

    10. Applied cbrt-div9.4

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

    11. Applied associate-*r/9.4

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

    12. Applied associate-*l/9.6

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

    13. Applied cbrt-div9.6

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

    14. Applied cbrt-div1.8

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

    15. Applied frac-times1.8

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

    16. Applied frac-times2.1

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

    17. Simplified1.8

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

    18. Simplified1.3

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

  4. Final simplification0.8

    \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{y}{z} = -\infty:\\ \;\;\;\;y \cdot \frac{x}{z}\\ \mathbf{elif}\;\frac{y}{z} \le -1.777824700739059504027072604237357294271 \cdot 10^{-189}:\\ \;\;\;\;\frac{y}{z} \cdot x\\ \mathbf{elif}\;\frac{y}{z} \le 6.194701076531514820787324531303599279908 \cdot 10^{-141}:\\ \;\;\;\;\frac{x \cdot y}{z}\\ \mathbf{elif}\;\frac{y}{z} \le 4.487328446405641062208224523193589026226 \cdot 10^{149}:\\ \;\;\;\;\frac{y}{z} \cdot x\\ \mathbf{else}:\\ \;\;\;\;y \cdot \frac{x}{z}\\ \end{array}\]

Reproduce

herbie shell --seed 2019325 +o rules:numerics
(FPCore (x y z t)
  :name "Graphics.Rendering.Chart.Backend.Diagrams:calcFontMetrics from Chart-diagrams-1.5.1"
  :precision binary64
  (* x (/ (* (/ y z) t) t)))