% Purpose : Provide some extensible arrows in math mode. % Author : Ky-Anh Huynh % License : LGPL \NeedsTeXFormat{LaTeX2e} \ProvidesPackage{extarrows}[2020/03/12 v1.2.0 Some extensible arrows] \RequirePackage{amsmath} \def\x@arrow{\DOTSB\Relbar} \def\xlongequalsignfill@{\arrowfill@\x@arrow\Relbar\x@arrow} \providecommand{\xlongequal}[2][]{% \ext@arrow 0099\xlongequalsignfill@{#1}{#2}} \def\xLongleftrightarrowfill@{% \arrowfill@\Longleftarrow\Relbar\Longrightarrow} \providecommand{\xLongleftrightarrow}[2][]{% \ext@arrow 0099\xLongleftrightarrowfill@{#1}{#2}} \def\xlongleftrightarrowfill@{% \arrowfill@\longleftarrow\relbar\longrightarrow} \providecommand{\xlongleftrightarrow}[2][]{% \ext@arrow 0099\xlongleftrightarrowfill@{#1}{#2}} \def\xLeftrightarrowfill@{\arrowfill@\Leftarrow\Relbar\Rightarrow} \providecommand{\xLeftrightarrow}[2][]{% \ext@arrow 0099\xLeftrightarrowfill@{#1}{#2}} \def\xleftrightarrowfill@{\arrowfill@\leftarrow\relbar\rightarrow} \providecommand{\xleftrightarrow}[2][]{% \ext@arrow 0099\xleftrightarrowfill@{#1}{#2}} \def\xLongleftarrowfill@{\arrowfill@\Longleftarrow\Relbar\Relbar} \providecommand{\xLongleftarrow}[2][]{% \ext@arrow 0099\xLongleftarrowfill@{#1}{#2}} \def\xLongrightarrowfill@{\arrowfill@\Relbar\Relbar\Longrightarrow} \providecommand{\xLongrightarrow}[2][]{% \ext@arrow 0099\xLongrightarrowfill@{#1}{#2}} \def\xlongleftarrowfill@{\arrowfill@\longleftarrow\relbar\relbar} \providecommand{\xlongleftarrow}[2][]{% \ext@arrow 0099\xlongleftarrowfill@{#1}{#2}} \def\xlongrightarrowfill@{\arrowfill@\relbar\relbar\longrightarrow} \providecommand{\xlongrightarrow}[2][]{% \ext@arrow 0099\xlongrightarrowfill@{#1}{#2}} \endinput