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Restore init for clocked discretized. #3577

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Restore init for clocked discretized. #3577

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6 changes: 3 additions & 3 deletions chapters/synchronous.tex
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Expand Up @@ -1400,13 +1400,13 @@ \subsection{Inferencing of solverMethod}\label{inferencing-of-solvermethod}

\section{Initialization of Clocked Partitions}\label{initialization-of-clocked-partitions}

The standard scheme for initialization of Modelica models does not apply for clocked base-partitions.
The standard scheme for initialization of Modelica models does not apply for discrete-time sub-partitions.
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Didn't we drop the sub here? I can't find a single example of discrete-time sub-partition in the current text?

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The standard scheme for initialization of Modelica models does not apply for discrete-time sub-partitions.
The standard scheme for initialization of Modelica models does not apply for discrete-time partitions.

Instead, initialization is performed in the following way:
\begin{itemize}
\item
Variables in clocked partitions cannot be used in initial equation or initial algorithm sections.
Variables in discrete-time sub-partitions cannot be used in initial equation or initial algorithm sections.
\item
Attribute \lstinline!fixed! cannot be applied to variables in clocked partitions.
Attribute \lstinline!fixed! cannot be applied to variables in discrete-time sub-partitions.
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Should we really allow fixed to be applied to clocked states in clocked discretized continuous-time partitions? Wouldn't that conflict with fixed already being defined for these variables?

The attribute \lstinline!fixed! is true for variables to which \lstinline!previous! is applied, otherwise false.
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While we are at it, shouldn't we avoid the problem when previous is applied to a parameter or constant?

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The attribute \lstinline!fixed! is true for variables to which \lstinline!previous! is applied, otherwise false.
The attribute \lstinline!fixed! is true for clocked states, otherwise false.

\end{itemize}

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