From 5919e3cc33b7339772b9ce05fe7b1accf1e82c53 Mon Sep 17 00:00:00 2001 From: OLSSON Hans Date: Thu, 26 Aug 2021 17:03:58 +0200 Subject: [PATCH] ClarifyDiscrete --- chapters/equations.tex | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/chapters/equations.tex b/chapters/equations.tex index e625e6cc5..61b239a52 100644 --- a/chapters/equations.tex +++ b/chapters/equations.tex @@ -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.