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\NeedsTeXFormat{LaTeX2e}[1995/12/01]
\ProvidesPackage{correctmathalign}
[2017/04/04 v1.1 style file ``correctmathalign.sty''^^J
by Yuwsuke Kieda]
\newif\if@fleqn \@fleqnfalse
\DeclareOption{latexorg}{\endinput}
\DeclareOption{fleqn}{\@fleqntrue}
\ProcessOptions
\if@fleqn
\renewenvironment{eqnarray}{% fleqn.clo
\stepcounter{equation}%
\def\@currentlabel{\p@equation\theequation}%
\global\@eqnswtrue\m@th
\global\@eqcnt\z@
\tabskip\mathindent
\let\\=\@eqncr
\setlength\abovedisplayskip{\topsep}%
\ifvmode
\addtolength\abovedisplayskip{\partopsep}%
\fi
\addtolength\abovedisplayskip{\parskip}%
\setlength\belowdisplayskip{\abovedisplayskip}%
\setlength\belowdisplayshortskip{\abovedisplayskip}%
\setlength\abovedisplayshortskip{\abovedisplayskip}%
$$\everycr{}\halign to\linewidth% $$
\bgroup
\hskip\@centering
$\displaystyle\tabskip\z@skip{##}$\@eqnsel&%
\global\@eqcnt\@ne\hfil$\displaystyle{{}##{}}$\hfil&%
\global\@eqcnt\tw@$\displaystyle{##}$\hfil\tabskip\@centering&%
\global\@eqcnt\thr@@\hb@xt@\z@\bgroup\hss##\egroup\tabskip\z@skip\cr}%
{\@@eqncr
\egroup
\global\advance\c@equation\m@ne$$% $$
\@ignoretrue
}
\else
\def\eqnarray{% latex.ltx
\stepcounter{equation}%
\def\@currentlabel{\p@equation\theequation}%
\global\@eqnswtrue
\m@th
\global\@eqcnt\z@
\tabskip\@centering
\let\\\@eqncr
$$\everycr{}\halign to\displaywidth\bgroup
\hskip\@centering$\displaystyle\tabskip\z@skip{##}$\@eqnsel
&\global\@eqcnt\@ne\hfil$\displaystyle{{}##{}}$\hfil
&\global\@eqcnt\tw@$\displaystyle{##}$\hfil\tabskip\@centering
&\global\@eqcnt\thr@@\hb@xt@\z@\bgroup\hss##\egroup
\tabskip\z@skip
\cr
}
\fi
\@ifpackageloaded{amsmath}{%
\@ifpackagelater{amsmath}{2016/11/05}{\relax}{%
\renewcommand{\start@aligned}[2]{%
\RIfM@\else
\nonmatherr@{\begin{\@currenvir}}%
\fi
\savecolumn@ % Assumption: called inside a group
\null%
\if #1t\vtop \else \if#1b \vbox \else \vcenter \fi \fi \bgroup
\maxfields@#2\relax
\ifnum\maxfields@>\m@ne
\multiply\maxfields@\tw@
\let\math@cr@@@\math@cr@@@alignedat
\alignsep@\z@skip
\else
\let\math@cr@@@\math@cr@@@aligned
\alignsep@\minalignsep
\fi
\Let@ \chardef\dspbrk@context\@ne
\default@tag
\spread@equation % no-op if already called
\global\column@\z@
\ialign\bgroup
&\column@plus
\hfil
\strut@
$\m@th\displaystyle{##}$%
\tabskip\z@skip
&\column@plus
$\m@th\displaystyle{{}##}$%
\hfil
\tabskip\alignsep@
\crcr
}
\renewenvironment{gathered}[1][c]{%
\RIfM@\else
\nonmatherr@{\begin{gathered}}%
\fi
\null%
\if #1t\vtop \else \if#1b\vbox \else \vcenter \fi\fi \bgroup
\Let@ \chardef\dspbrk@context\@ne \restore@math@cr
\spread@equation
\ialign\bgroup
\hfil\strut@$\m@th\displaystyle##$\hfil
\crcr
}{%
\endaligned
}%
}
}{\relax}
\endinput
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