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Be clearer in definition of Inf and avoid relying on Modelica.Constants. #3612

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Be clearer in definition of Inf and avoid relying on Modelica.Constants. #3612

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9b1e1d9
Be clearer in definition of Inf and avoid relying on Modelica.Constants.
HansOlsson Nov 12, 2024
f805e6d
Avoid introducing another constant.
HansOlsson Nov 12, 2024
7f5c8f3
HaveSomeDefault
HansOlsson Nov 13, 2024
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4 changes: 3 additions & 1 deletion chapters/arrays.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -596,7 +596,7 @@ \subsubsection{Reduction Expressions}\label{reduction-expressions}
For deduction of ranges, see \cref{implicit-iteration-ranges}; and for using types as ranges see \cref{types-as-iteration-ranges}.

\begin{table}[H]
\caption{Reduction expressions with iterators. (The least and greatest values of \lstinline!Real! are available as \lstinline!-Modelica.Constants.inf! and \lstinline!Modelica.Constants.inf!, respectively.)}
\caption{Reduction expressions with iterators.}
\begin{center}
\begin{tabular}{l l l}
\hline
Expand All @@ -612,6 +612,8 @@ \subsubsection{Reduction Expressions}\label{reduction-expressions}
\end{center}
\end{table}

The least and greatest values of \lstinline!Real! are the minimum and maximum representable finite floating point numbers of the underlying type, see also \cref{real-type}.

\begin{example}
% No frame since the math would break it.
\begin{lstlisting}[language=modelica, frame=none]
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8 changes: 7 additions & 1 deletion chapters/classes.tex
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Expand Up @@ -1478,7 +1478,7 @@ \subsection{Real Type}\label{real-type}
parameter StringType quantity = "";
parameter StringType unit = "" "Unit used in equations";
parameter StringType displayUnit = "" "Default display unit";
parameter RealType min = -Inf, max = +Inf; // Inf denotes a large value
parameter RealType min = ..., max = ...; // See below
parameter RealType start; // Initial value
parameter BooleanType fixed = true, // default for parameter/constant;
= false; // default for other variables
Expand All @@ -1500,6 +1500,12 @@ \subsection{Real Type}\label{real-type}
\index{unbounded@\robustinline{unbounded}!attribute of \robustinline{Real}}%
\index{stateSelect@\robustinline{stateSelect}!attribute of \robustinline{Real}}

The default \lstinline!max! and \lstinline!max!-attributes are the minimum and maximum representable finite floating point number of the underlying type.
Therefore they do not constrain the value.
\begin{nonnormative}
The minimum representable floating point number is usually minus the maximum representable floating point number, and should not be confused with the minimum positive one.
\end{nonnormative}

The following attributes shall be evaluable: \lstinline!quantity!, \lstinline!unit!, \lstinline!displayUnit!, \lstinline!fixed!, and \lstinline!stateSelect!.

The \lstinline!unit!- and \lstinline!displayUnit!-attributes may be either the empty string or a string matching \lstinline[language=grammar]!unit-expression! in \cref{unit-expressions}.
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