)
{
case 0:
case 2:
#ifdef _DEBUG
// !!! DEBUG !!!
// Вывод названия переключателя (для отладки)
// printf("\nSwitchName=%s\n",SwitchName);
#endif

// Проверка, есть ли переключатель в списке "gp_Switches"
if(!gp_Switches->IsExist(SwitchName)) break;

// Получаем указатель на "CSwitch" (по "SwitchName")
CSwitch *pSwitch=gp_Switches->GetPointer(SwitchName);

// "pSwitch" - NULL ? (нет, сущ.)
if(!pSwitch) break;

// "Delta" - 0 ? (да, 0)
if(Delta==0) pSwitch->SetState(0);

// "Delta" - 2 ? (да, 2)
else pSwitch->SetState(1);

break;

case 1: // Delta == 1 ? (да, 1)

// Проверка, есть ли переключатель в списке "gp_Switches"
if(!gp_Switches->IsExist(SwitchName)) break;

// Получаем указ

_\tau \approx \frac{1}{2}(\Delta_\tau^+ + \Delta_\tau^-),
\end{equation}
where $\Delta_\tau^+$ and $\Delta_\tau^-$ are the time steps for the forward and backward simulations, respectively.

The time steps in the forward and backward simulations are chosen to satisfy a CFL condition for stability. We use the same CFL number for both simulations, which is set to 0.5 in our calculations. The CFL number is defined as
\begin{equation}
CFL = \frac{\text{max}(|u| + c) \cdot \Delta t}{\Delta x},
\end{equation}
where $u$ is the velocity vector, $c$ is the speed of sound, $\Delta t$ is the time step, and $\Delta x$ is the spatial grid size.


















%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Acknowledgments:
% Funding sources:
% Author contributions:
% Competing interests:
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5%%%









% Appendices appear after the main body of the text. They are prefixed by an A and sequentially numbered: (A1), (A2), etc. Capitalize significant words in titles of appendices, figures, tables, etc.
% Appendix sections can be concluded with a theorem-like environment (e.g., {proof}) or with a discussion of implications/conclusions (e.g., {discussion}).
% Number appendices consecutively within each section or independently across sections (e.g., A1, A2, B1, C1).
% Use \appendix* if there is only one appendix section. % Use * after section number to suppress numbering if desired (e.g., A*).

% Omit “Appendix” before section title if only one appendix appears; use “Appendices” if more than one appendix appears; use “Appendix” before individual appendix titles that are not part of a numbered sequence within appendices; e.g., Appendix A*, Appendix B*. See also Section 4.4 in Manuscript Preparation Guidelines for Nature Research Journals at http://www.nature.com/npg/authors/prep/index.html#appendixes .

% For equations in appendices, number consecutively with equation numbers in main text (i.e., 1A1, 1A2; 2A1, 2A2; etc.). Refer to equations in main text as Eqn 1 or Eqs 1–3 as appropriate; refer to equations in appendices as Eqn A1 or Eqs A1–A3 as appropriate . For figures and tables in appendices, refer to them as Fig A1 or Tables A1–A3 as appropriate . For examples without special numbering schemes refer to them simply as Example A1 . See also Section 4.4 in Manuscript Preparation Guidelines for Nature Research Journals at http://www.nature.com/npg/authors/prep/index

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