\ProvidesPackage{variablelm}[2017/02/10 v1.0 to control the scaling for Latin Modern Fonts by Yuwsuke KIEDA]

\RequirePackage{xkeyval}
\@ifpackageloaded{lmodern}{}{\@latexerr{You must be load "lmodern" package}\@ehb}
\@ifpackageloaded{amsmath}{}{%
  \@latex@warning@no@line{\noexpand\usepackage{amsmath} is effective for correct functioning of \noexpand\big, \noexpand\Big, \noexpand\bigg, etc}}

\DeclareOptionX{scale}[1.0]{\def\alphabet@scale{#1}}
\DeclareOptionX{ttscale}[1.0]{\def\alphabet@scale@tt{#1}}
\DeclareOptionX{sfscale}[1.0]{\def\alphabet@scale@sf{#1}}

\@ifundefined{alphabet@scale}{\def\alphabet@scale{1.0}}{}
\@ifundefined{alphabet@scale@tt}{\def\alphabet@scale@tt{\alphabet@scale}}{}
\@ifundefined{alphabet@scale@sf}{\def\alphabet@scale@sf{\alphabet@scale}}{}

\renewcommand{\rmdefault}{vlmr}
\renewcommand{\sfdefault}{vlmss}
\renewcommand{\ttdefault}{vlmtt}

\DeclareOptionX{variablett}{\renewcommand{\ttdefault}{vlmvtt}}
\DeclareOptionX{lighttt}{\let\vlmtt@use@light@as@normal\@empty}

%\ProcessOptions\relax

\ProcessOptionsX

\SetSymbolFont{operators}   {normal}{OT1}{vlmr} {m}{n}
\SetSymbolFont{letters}     {normal}{OML}{vlmm} {m}{it}
\SetSymbolFont{symbols}     {normal}{OMS}{vlmsy}{m}{n}
\SetSymbolFont{largesymbols}{normal}{OMX}{vlmex}{m}{n}
\SetSymbolFont{operators}   {bold}  {OT1}{vlmr} {bx}{n}
\SetSymbolFont{letters}     {bold}  {OML}{vlmm} {b}{it}
\SetSymbolFont{symbols}     {bold}  {OMS}{vlmsy}{b}{n}
\SetSymbolFont{largesymbols}{bold}  {OMX}{vlmex}{m}{n}

\SetMathAlphabet{\mathbf}{normal}{OT1}{vlmr}{bx}{n}
\SetMathAlphabet{\mathsf}{normal}{OT1}{vlmss}{m}{n}
\SetMathAlphabet{\mathit}{normal}{OT1}{vlmr}{m}{it}
\SetMathAlphabet{\mathtt}{normal}{OT1}{vlmtt}{m}{n}
\SetMathAlphabet{\mathbf}{bold}  {OT1}{vlmr}{bx}{n}
\SetMathAlphabet{\mathsf}{bold}  {OT1}{vlmss}{bx}{n}
\SetMathAlphabet{\mathit}{bold}  {OT1}{vlmr}{bx}{it}
\SetMathAlphabet{\mathtt}{bold}  {OT1}{vlmtt}{m}{n}

\endinput