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-%%
-%% This is file `phy-doubleprod.sty',
-%% the `doubleprod' module of `physics2' package.
-%%
-%% ******************************************************
-%% * This work may be distributed and/or modified under *
-%% * the conditions of the LaTeX Project Public License *
-%% * *
-%% * http://www.latex-project.org/lppl.txt *
-%% * *
-%% * either version 1.3c of this license or any later *
-%% * version. *
-%% ******************************************************
-%%
-%% This work has the LPPL maintenance status `maintained'.
-%%
-%% The Current Maintainer of this work is Zhang Tingxuan.
-%%
-\ProvidesFile{phy-doubleprod.sty}
- [2023/01/25 `doubleprod' (double binary) module of `physics2.sty']
-% The options, true or false.
-\phy@define@key{doubleprod}{crosssymbol}{\def\@phy@dbl@c{#1}}
-\phy@define@key{doubleprod}{dotsymbol}{\def\@phy@dbl@d{#1}}
-\phy@define@key{doubleprod}{crossscale}{\def\@phy@dbl@sc{#1}}
-\phy@define@key{doubleprod}{dotscale}{\def\@phy@dbl@sd{#1}}
-\phy@define@key{doubleprod}{crossopenup}{\def\@phy@dbl@oc{#1}}
-\phy@define@key{doubleprod}{dotopenup}{\def\@phy@dbl@od{#1}}
-\phy@setkeys{doubleprod}{crosssymbol=\times,dotsymbol=\ldotp,
- crossscale=0.8,dotscale=1,crossopenup=.02,dotopenup=.2}
-\phy@processkeyopt{doubleprod}
-\def\phy@dbl@gen#1#2#3#4{%
- \DeclareRobustCommand#1{\mathbin{\vcenter{\baselineskip\z@skip%
- \lineskip#4\phy@dblcurrf@size%
- \setbox\@tempboxa=\hbox{\fontsize{#2\phy@dblcurrf@size}\z@$#3$}%
- \copy\@tempboxa\box\@tempboxa}}}}
-\def\phy@dblcurrf@size{\dimexpr\f@size pt\relax}
-\phy@dbl@gen\doublecross\@phy@dbl@sc\@phy@dbl@c\@phy@dbl@oc
-\phy@dbl@gen\doubledot\@phy@dbl@sd\@phy@dbl@d\@phy@dbl@od
-\endinput
-%% End of file `phy-doubleprod.sty'.