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%%% LaTeX document style option eqname.sty
%%% Gerd Neugebauer 4/92
%%% gene (at) gerd-neugebauer (dot) de
%%%
%%% Copyright 1992, 1994, 2010 Gerd Neugebauer
%%% You may freely use, modify and/or distribute this file.
%%%
%%% This style option allows named equations as follows
%%%
%%% 1 + 1 = 2 (17)
%%% 1 + 2 = 3 (bingo)
%%% 1 + 3 = 4 (18)
%%%
%%% This can be produced by
%%%
%%% \begin{eqnarray}
%%% 1+1=2 \label{e1}\\
%%% 1+2=3 \eqname{bingo}\label{e2}\\
%%% 1+3=4 \label{e3}
%%% \end{eqnarray}
%%%
%%% Note: The \label has to go after the \eqname command.
%%%
%%% Bugs & Problems:
%%% This style option does not work with leqno.sty
%%%
%%%----------------------------------------------------------------------------
\newif\if@eqname
\def\@eqname{}
\def\@eqnnum{{\reset@font\rm
(\if@eqname\@eqname%
\addtocounter{equation}{-1}%
\global\let\@currentlabel=\theequation%
\global\@eqnamefalse%
\else\theequation\fi)}}
\def\eqname#1{\xdef\@eqname{#1}\global\@eqnametrue\gdef\@currentlabel{#1}}
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