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%%
%% This is file `eqnarray.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% eqnarray.dtx (with options: `style')
%%
%% IMPORTANT NOTICE:
%%
%% For the copyright see the source file.
%%
%% Any modified versions of this file must be renamed
%% with new filenames distinct from eqnarray.sty.
%%
%% For distribution of the original source see the terms
%% for copying and modification in the file eqnarray.dtx.
%%
%% This generated file may be distributed as long as the
%% original source files, as listed above, are part of the
%% same distribution. (The sources need not necessarily be
%% in the same archive or directory.)
\def\fileversion{1.3}
\def\filedate{December 1, 2010}
\def\docdate{December 1, 2010}
\typeout{equationarray \fileversion\space<\filedate>}
% \typeout{English documentation\space\space<\docdate>}
\NeedsTeXFormat{LaTeX2e} \ProvidesPackage{eqnarray}
\RequirePackage{array}
\def\eqnarr@left{\@centering}
\let\eqnarr@opts\relax
\DeclareOption{fleqn}{
\def\eqnarr@left{\mathindent}
\def\eqnarr@opts{\displaywidth\linewidth
\advance\displaywidth-\mathindent} }
\ProcessOptions
\def\equationarray{%
\col@sep\arraycolsep
\def\d@llarbegin{$\displaystyle}%
\def\d@llarend{$}%
\stepcounter{equation}%
\let\@currentlabel=\theequation
\set@eqnsw \global\@eqcnt\z@ \global\@eqargcnt\z@
\let\@classz\@eqnclassz
\def\multicolumn##1##2##3{\@eqnmulticolumn{##1}{##2}{##3}%
\global\advance\@eqcnt##1
\global\advance\@eqcnt\m@ne}%
\def\eqnnum##1{\global\@eqnswfalse\gdef\@eqnarrnum{##1}}
\def\@halignto{to\displaywidth}%
\@ifnextchar[{\@equationarray}{\@equationarray[.]}}
\let\@eqnmulticolumn=\multicolumn
\def\yesnumber{\global\@eqnswtrue}
\let\set@eqnsw=\yesnumber
\def\@amper{&}
\newcount\@eqargcnt % counts number of columns
\def\@equationarray[#1]#2{%
\eqnarr@opts
\@tempdima \ht \strutbox
\advance \@tempdima by\extrarowheight
\setbox\@arstrutbox=\hbox{\vrule
\@height\arraystretch \@tempdima
\@depth\arraystretch \dp \strutbox
\@width\z@}%
\gdef\advance@eqargcnt{\global\advance\@eqargcnt\@ne}%
\begingroup
\@mkpream{#2}%
\xdef\@preamble{%
\if #1l\tabskip\z@ \else\if #1r\tabskip\@centering
\else\if #1c\tabskip\@centering
\else\tabskip\eqnarr@left \fi\fi\fi
\halign \@halignto
\bgroup \tabskip\z@ \@arstrut \@preamble
\if #1l\tabskip\@centering \else\if #1r\tabskip\z@
\else\tabskip\@centering \fi\fi
\@amper\llap{\@sharp}\tabskip\z@\cr}%
\endgroup
\gdef\advance@eqargcnt{}%
\bgroup
\let\@sharp## \let\protect\relax
\m@th \let\\=\@equationcr
\let\par\@empty
$$ % $$ BRACE MATCHING HACK
\lineskip \z@
\baselineskip \z@
\@preamble}
\def\@eqnclassz{\@classx
\@tempcnta \count@
\advance@eqargcnt
\prepnext@tok
\@addtopreamble{%
\global\advance\@eqcnt\@ne
\ifcase \@chnum
\hfil \d@llarbegin \insert@column \d@llarend\hfil \or
\d@llarbegin \insert@column \d@llarend \hfil \or
\hfil\kern\z@ \d@llarbegin \insert@column \d@llarend \or
$\vcenter
\@startpbox{\@nextchar}\insert@column \@endpbox $\or
\vtop \@startpbox{\@nextchar}\insert@column \@endpbox \or
\vbox \@startpbox{\@nextchar}\insert@column \@endpbox
\fi}\prepnext@tok}
\def\endequationarray{\@zequationcr
\egroup
\global\advance\c@equation\m@ne $$ % $$ BRACE MATCHING HACK
\egroup\global\@ignoretrue
\gdef\@preamble{}}
\def\@equationcr{${\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
\@xequationcr}{\global\@eqpen\interdisplaylinepenalty
\@xequationcr}}
\def\@xequationcr{%
\@ifnextchar[{\@argequationcr}{\ifnum0=`{\fi}${}%
\@zequationcr}}
\def\@argequationcr[#1]{\ifnum0=`{\fi}${}\ifdim #1>\z@
\@xargequationcr{#1}\else
\@yargequationcr{#1}\fi}
\def\@xargequationcr#1{\unskip
\@tempdima #1\advance\@tempdima \dp \@arstrutbox
\vrule \@depth\@tempdima \@width\z@
\@zequationcr\noalign{\penalty\@eqpen}}
\def\@yargequationcr#1{%
\@zequationcr\noalign{\penalty\@eqpen\vskip #1}}
\let\@eqnarrnum\relax
\def\@zequationcr{\@whilenum\@eqcnt <\@eqargcnt
\do{\@amper\omit\global\advance\@eqcnt\@ne}%
\@amper
\if@eqnsw\@eqnnum\stepcounter{equation}\else
\@eqnarrnum\global\let\@eqnarrnum\relax\fi
\set@eqnsw\global\@eqcnt\z@\cr}
\@namedef{equationarray*}{%
\let\set@eqnsw=\nonumber \equationarray}
\@namedef{endequationarray*}{\endequationarray}
\endinput
%%
%% End of file `eqnarray.sty'.
|
