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% in this file.
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% \fi
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% \iffalse   % this is a METACOMMENT !
%
% File `latexsym.dtx'.
% Copyright (C) 1994-2019 by Frank Mittelbach. All rights reserved.
%
%<package>\NeedsTeXFormat{LaTeX2e}
%<package>\ProvidesPackage{latexsym}
%<fd>\ProvidesFile{ulasy.fd}
%<-driver>             [1998/08/17 v2.2e
%<package>                 Standard LaTeX package (lasy symbols)]
%<fd>              LaTeX symbol font definitions]
%
%<*driver>
\documentclass{ltxdoc}
\usepackage{latexsym}
\GetFileInfo{latexsym.sty}
\providecommand\dst{\expandafter{\normalfont\scshape docstrip}}
\title{The \LaTeX{} symbol fonts for use with
         \LaTeXe.\thanks{This file has version
           number \fileversion, dated \filedate.}}
\date{\filedate}
\author{Frank Mittelbach}
\begin{document}
\MaintainedByLaTeXTeam{latex}
\maketitle
 \DocInput{latexsym.dtx}
\end{document}
%</driver>
% \fi
%
% \changes{v2.2e}{1998/08/17}{Documentation fixes.}
%
% \section{Introduction}
%
%    This file defines the package |latexsym| which makes the few
%    additional characters available that come from the |lasy| fonts
%    (\LaTeX's symbol fonts). These fonts are not automatically
%    included in the NFSS2/\LaTeXe{} since they take up important
%    space and aren't necessary if one makes use of the packages
%    \texttt{amsfonts} or \texttt{amssymb}.
%
%    The commands defined by the \texttt{latexsym} package are:
%    \begin{quote}\raggedright
%    |\mho|~$\mho$ \quad
%    |\Join|~$\Join$ \quad
%    |\Box|~$\Box$ \quad
%    |\Diamond|~$\Diamond$ \quad
%    |\leadsto|~$\leadsto$ \quad
%    |\sqsubset|~$\sqsubset$ \quad
%    |\sqsupset|~$\sqsupset$ \quad
%    |\lhd|~$\lhd$ \quad
%    |\unlhd|~$\unlhd$ \quad
%    |\rhd|~$\rhd$ \quad
%    |\unrhd|~$\unrhd$
%    \end{quote}
%
% \StopEventually{}
%
% \section{The \dst{} modules}
%
% The following modules are used in the implementation to direct
% \dst{} in generating the external files:
% \begin{center}
% \begin{tabular}{ll}
%   driver & produce a documentation driver file \\
%   package  & produce a package file \\
%   fd     & produce a font definition file
% \end{tabular}
% \end{center}
%
%
% \section{The Implementation}
%
% The individual files generated from this code are identified at the
% very top of this file by a couple of lines looking like this:
% \begin{verbatim}
% %<fd>\ProvidesFile{Ulasy.fd}
% %<-driver>             [????/??/?? v2.2?
% %<package>                 Standard LaTeX package (lasy symbols)]
% %<fd>              LaTeX symbol font definitions]
%\end{verbatim}
%
%    \begin{macrocode}
%<*package>
%    \end{macrocode}
%
% \begin{macro}{\symlasy}
%
%    It is possible to detect whether or not the \LaTeX{} symbols are
%    already defined by checking for the math group number with the
%    name |\symlasy|.
%
%    In that case we exit but write a message to the transcript file.
%    \begin{macrocode}
\ifx\symlasy\undefined \else
  \wlog{Package latexsym: nothing to set up^^J}%
  \endinput \fi
%    \end{macrocode}
%    Otherwise we define the new symbol font.
%    \begin{macrocode}
  \DeclareSymbolFont{lasy}{U}{lasy}{m}{n}
  \SetSymbolFont{lasy}{bold}{U}{lasy}{b}{n}
%    \end{macrocode}
% \end{macro}
%
%
%    Because the lasy symbols are made an error in the format we have
%    to undefine them before we can set them anew with
%    |\DeclareMathSymbol|.
%    \begin{macrocode}
  \let\mho\undefined            \let\sqsupset\undefined
  \let\Join\undefined           \let\lhd\undefined
  \let\Box\undefined            \let\unlhd\undefined
  \let\Diamond\undefined        \let\rhd\undefined
  \let\leadsto\undefined        \let\unrhd\undefined
  \let\sqsubset\undefined
%    \end{macrocode}
% \changes{v2.2a}{1995/03/18}{\cs{lhd} and friends should be bin ops.}
%    \begin{macrocode}
  \DeclareMathSymbol\mho     {\mathord}{lasy}{"30}
  \DeclareMathSymbol\Join    {\mathrel}{lasy}{"31}
  \DeclareMathSymbol\Box     {\mathord}{lasy}{"32}
  \DeclareMathSymbol\Diamond {\mathord}{lasy}{"33}
  \DeclareMathSymbol\leadsto {\mathrel}{lasy}{"3B}
  \DeclareMathSymbol\sqsubset{\mathrel}{lasy}{"3C}
  \DeclareMathSymbol\sqsupset{\mathrel}{lasy}{"3D}
  \DeclareMathSymbol\lhd     {\mathbin}{lasy}{"01}
  \DeclareMathSymbol\unlhd   {\mathbin}{lasy}{"02}
  \DeclareMathSymbol\rhd     {\mathbin}{lasy}{"03}
  \DeclareMathSymbol\unrhd   {\mathbin}{lasy}{"04}
%    \end{macrocode}
%    To save some space we can remove the definition of |\not@base|
%    since it isn't any longer needed. (We use |\@undefined| so that
%    gives an error and not a recursive definition
%    if it is still used somewhere.)
% \changes{v2.2b}{1995/07/03}{Free space for \cs{not@base}}
%    \begin{macrocode}
  \let\not@base\@undefined
%</package>
%    \end{macrocode}
%
%  \subsection{\LaTeX{} symbols fonts}
%
% \changes{v2.2d}{1996/11/20}{lowercase ulasy.fd /1044}
%    The rest of this file defines the font shape declarations
%    that have to go into the corresponding |.fd| file.
%
%    \begin{macrocode}
%<*fd>
\DeclareFontFamily{U}{lasy}{}
\DeclareFontShape{U}{lasy}{m}{n}{ <5> <6> <7> <8> <9> gen * lasy
      <10> <10.95> <12> <14.4> <17.28> <20.74> <24.88>lasy10  }{}
%    \end{macrocode}
%    Since there are no bold lasy symbols below 10pt we silently
%    substitute them by the medium ones to avoid terminal warnings if
%    |\boldmath| is selected.
%    \begin{macrocode}
\DeclareFontShape{U}{lasy}{b}{n}{ <-10> ssub * lasy/m/n
     <10> <10.95> <12> <14.4> <17.28> <20.74> <24.88>lasyb10  }{}
%</fd>
%    \end{macrocode}
%
%    The next line goes into all files and in addition prevents \dst{}
%    from adding any further code from the main source file (such as a
%    character table).
%    \begin{macrocode}
\endinput
%    \end{macrocode}
%
% \DeleteShortVerb{\|}
% \Finale
%
%
