Skip to content

Commit

Permalink
ClarifyDiscrete
Browse files Browse the repository at this point in the history
  • Loading branch information
HansOlsson committed Aug 26, 2021
1 parent a9345c0 commit 5919e3c
Showing 1 changed file with 1 addition and 2 deletions.
3 changes: 1 addition & 2 deletions chapters/equations.tex
Expand Up @@ -822,9 +822,8 @@ \section{Initialization, initial equation, and initial algorithm}\label{initiali

Based on these non-normative considerations we have the following rules:
A tool may add or remove initial equations automatically according to the rules below such that the resulting system is structurally nonsingular.
In these cases diagnostics are appropriate since the result is not unique and not necessarily what the user expects.
\begin{itemize}
\item A missing initial value of a discrete-time variable which does not influence the simulation result, may be automatically set to the start value or its default without informing the user.
\item A missing initial value of a discrete-time variable (see \cref{component-variability-prefixes-discrete-parameter-constant} - this does not include parameter and constant variables), which does not influence the simulation result, may be automatically set to the start value or its default without informing the user.
For example, variables assigned in a \lstinline!when!-clause which are not accessed outside of the \lstinline!when!-clause and where \lstinline!pre! is not explicitly used on these variables, do not have an effect on the simulation.
\item A \lstinline!start!-attribute that is not fixed may be treated as fixed with a diagnostic.
\item A consistent start value or initial equation may be removed with a diagnostic.
Expand Down

0 comments on commit 5919e3c

Please sign in to comment.