Average Error: 14.2 → 0.2
Time: 20.3s
Precision: 64
\[\frac{\sin x \cdot \sinh y}{x}\]
↓
\[\sin x \cdot \frac{\sinh y}{x}\]
\frac{\sin x \cdot \sinh y}{x}
↓
\sin x \cdot \frac{\sinh y}{x}
double f(double x, double y) {
        double r22386622 = x;
        double r22386623 = sin(r22386622);
        double r22386624 = y;
        double r22386625 = sinh(r22386624);
        double r22386626 = r22386623 * r22386625;
        double r22386627 = r22386626 / r22386622;
        return r22386627;
}
↓
double f(double x, double y) {
        double r22386628 = x;
        double r22386629 = sin(r22386628);
        double r22386630 = y;
        double r22386631 = sinh(r22386630);
        double r22386632 = r22386631 / r22386628;
        double r22386633 = r22386629 * r22386632;
        return r22386633;
}

Error

Bits error versus x

Bits error versus y

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Results

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Target

Original14.2
Target0.2
Herbie0.2
\[\sin x \cdot \frac{\sinh y}{x}\]

Derivation

  1. Initial program 14.2

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

  3. Applied *-un-lft-identity14.2

    \[\leadsto \frac{\sin x \cdot \sinh y}{\color{blue}{1 \cdot x}}\]

  4. Applied times-frac0.2

    \[\leadsto \color{blue}{\frac{\sin x}{1} \cdot \frac{\sinh y}{x}}\]

  5. Simplified0.2

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

  6. Final simplification0.2

    \[\leadsto \sin x \cdot \frac{\sinh y}{x}\]

Reproduce

herbie shell --seed 2019192 
(FPCore (x y)
  :name "Linear.Quaternion:$ccosh from linear-1.19.1.3"

  :herbie-target
  (* (sin x) (/ (sinh y) x))

  (/ (* (sin x) (sinh y)) x))