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Filename : calc.sty
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%%
%% This is file `calc.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% calc.dtx  (with options: `package')
%% 
%% This is a generated file.
%% 
%% Copyright 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
%% 2006 2008 2009
%% The LaTeX3 Project and any individual authors listed elsewhere
%% in this file.
%% 
%% This file was generated from file(s) of the Standard LaTeX `Tools Bundle'.
%% --------------------------------------------------------------------------
%% 
%% It may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%% The latest version of this license is in
%%    http://www.latex-project.org/lppl.txt
%% and version 1.3c or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.
%% 
%% This file may only be distributed together with a copy of the LaTeX
%% `Tools Bundle'. You may however distribute the LaTeX `Tools Bundle'
%% without such generated files.
%% 
%% The list of all files belonging to the LaTeX `Tools Bundle' is
%% given in the file `manifest.txt'.
%% 
%% File `calc.dtx'.
%% Copyright (C) 1992--1995
%%          Kresten Krab Thorup and Frank Jensen.
%% Copyright (C) 1997--2007
%%          Kresten Krab Thorup, Frank Jensen and the LaTeX3 Project.
%%
%% The original authors (fj@hugin.dk and  krab@daimi.aau.dk) have
%% contributed this package to the LaTeX distribution.
%% Problems with this package should now be sent using latexbug.tex to
%% the normal LaTeX bug report address.
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{calc}
          [2007/08/22 v4.3 Infix arithmetic (KKT,FJ)]
\def\calc@assign@generic#1#2#3#4{\let\calc@A#1\let\calc@B#2%
    \calc@open(#4!%
    \global\calc@A\calc@B\endgroup#3\calc@B}
\def\calc@assign@count{\calc@assign@generic\calc@Acount\calc@Bcount}
\def\calc@assign@dimen{\calc@assign@generic\calc@Adimen\calc@Bdimen}
\def\calc@assign@skip{\calc@assign@generic\calc@Askip\calc@Bskip}
\newcount\calc@Acount   \newcount\calc@Bcount
\newdimen\calc@Adimen   \newdimen\calc@Bdimen
\newskip\calc@Askip     \newskip\calc@Bskip
\def\setcounter#1#2{\@ifundefined{c@#1}{\@nocounterr{#1}}%
   {\calc@assign@count{\global\csname c@#1\endcsname}{#2}}}
  \def\addtocounter#1#2{\@ifundefined{c@#1}{\@nocounterr{#1}}%
    {\calc@assign@count{\global\advance\csname c@#1\endcsname}{#2}}}%
  \def\stepcounter#1{\@ifundefined {c@#1}%
    {\@nocounterr {#1}}%
    {\global\advance\csname c@#1\endcsname \@ne
    \begingroup
      \let\@elt\@stpelt \csname cl@#1\endcsname
    \endgroup}}%
\@ifpackageloaded{amstext}{%
 \expandafter\def\expandafter\stepcounter
    \expandafter#\expandafter1\expandafter{%
    \expandafter\iffirstchoice@\stepcounter{#1}\fi
 }
 \expandafter\def\expandafter\addtocounter
    \expandafter#\expandafter1\expandafter#\expandafter2\expandafter{%
    \expandafter\iffirstchoice@\addtocounter{#1}{#2}\fi
 }
}{}
\DeclareRobustCommand\setlength{\calc@assign@skip}
\DeclareRobustCommand\addtolength[1]{\calc@assign@skip{\advance#1}}
\def\calc@pre@scan#1{%
  \expandafter\@calc@pre@scan\romannumeral-`\a#1}
\def\@calc@pre@scan#1{%
  \ifx(#1%
    \expandafter\calc@open
  \else
    \ifx\widthof#1%
      \expandafter\expandafter\expandafter\calc@textsize
    \else
      \ifx\maxof#1%
        \expandafter\expandafter\expandafter\expandafter
        \expandafter\expandafter\expandafter\calc@maxmin@addsub
      \else
        \calc@numeric% no \expandafter needed for this one.
      \fi
    \fi
  \fi
  #1}
\def\calc@open({\begingroup\aftergroup\calc@initB
   \begingroup\aftergroup\calc@initB
   \calc@pre@scan}
\def\calc@initB{\calc@B\calc@A}
\def\calc@numeric{\afterassignment\calc@post@scan \global\calc@A}
\@for\reserved@a:=widthof,heightof,depthof,totalheightof,maxof,minof\do
{\@ifundefined{\reserved@a}{}{%
  \PackageError{calc}{%
  The\space calc\space package\space reserves\space the\space
  command\space name\space `\@backslashchar\reserved@a'\MessageBreak
  but\space it\space has\space already\space been\space defined\space
  with\space the\space meaning\MessageBreak
  `\expandafter\meaning\csname\reserved@a\endcsname'.\MessageBreak
  This\space original\space definition\space will\space be\space lost}%
  {If\space you\space need\space a\space command\space with\space
  this\space definition,\space you\space must\space use\space a\space
  different\space name.}}%
}
\let\widthof\ignorespaces
\let\heightof\ignorespaces
\let\depthof\ignorespaces
\let\totalheightof\ignorespaces
\def\calc@textsize #1#2{%
  \begingroup
    \let\widthof\wd
    \let\heightof\ht
    \let\depthof\dp
    \def\totalheightof{\ht\dp}%
    \expandafter\@settodim\expandafter{#1}%
      {\global\calc@A}%
      {%
       \let\widthof\ignorespaces
       \let\heightof\ignorespaces
       \let\depthof\ignorespaces
       \let\totalheightof\ignorespaces
       #2}%
  \endgroup
  \calc@post@scan}
\def\calc@post@scan#1{%
 \expandafter\@calc@post@scan\romannumeral-`\a#1}
\def\@calc@post@scan#1{%
  \ifx#1!\let\calc@next\endgroup \else
    \ifx#1+\let\calc@next\calc@add \else
      \ifx#1-\let\calc@next\calc@subtract \else
        \ifx#1*\let\calc@next\calc@multiplyx \else
          \ifx#1/\let\calc@next\calc@dividex \else
            \ifx#1)\let\calc@next\calc@close \else
              \ifx#1\relax\let\calc@next\calc@post@scan \else
                \def\calc@next{\calc@error#1}%
              \fi
            \fi
          \fi
        \fi
      \fi
    \fi
  \fi
  \calc@next}
\def\calc@add{\calc@generic@add\calc@addAtoB}
\def\calc@subtract{\calc@generic@add\calc@subtractAfromB}
\def\calc@generic@add#1{\endgroup\global\calc@A\calc@B\endgroup
   \begingroup\aftergroup#1\begingroup\aftergroup\calc@initB
   \calc@pre@scan}
\def\calc@addAtoB{\advance\calc@B\calc@A}
\def\calc@subtractAfromB{\advance\calc@B-\calc@A}
\ifx\real\@undefined\let\real\relax\fi
\ifx\ratio\@undefined\let\ratio\relax\fi
\def\calc@ratio@x{\ratio}
\def\calc@real@x{\real}
\def\calc@multiplyx#1{\def\calc@tmp{#1}%
  \ifx\calc@tmp\calc@ratio@x \let\calc@next\calc@ratio@multiply \else
    \ifx\calc@tmp\calc@real@x \let\calc@next\calc@real@multiply \else
      \ifx\maxof#1\let\calc@next\calc@maxmin@multiply \else
        \let\calc@next\calc@multiply
      \fi
    \fi
  \fi
  \calc@next#1}
\def\calc@dividex#1{\def\calc@tmp{#1}%
  \ifx\calc@tmp\calc@ratio@x \let\calc@next\calc@ratio@divide \else
    \ifx\calc@tmp\calc@real@x \let\calc@next\calc@real@divide \else
      \ifx\maxof#1\let\calc@next\calc@maxmin@divide \else
        \let\calc@next\calc@divide
      \fi
    \fi
  \fi
  \calc@next#1}
\def\calc@multiply{\calc@generic@multiply\calc@multiplyBbyA}
\def\calc@divide{\calc@generic@multiply\calc@divideBbyA}
\def\calc@generic@multiply#1{\endgroup\begingroup
   \let\calc@A\calc@Acount \let\calc@B\calc@Bcount
   \aftergroup#1\calc@pre@scan}
\def\calc@multiplyBbyA{\multiply\calc@B\calc@Acount}
\def\calc@divideBbyA{\divide\calc@B\calc@Acount}
\def\calc@close
   {\endgroup\global\calc@A\calc@B
    \endgroup\global\calc@A\calc@B
    \calc@post@scan}
\def\calc@ratio@multiply\ratio{\calc@ratio@evaluate}
\def\calc@ratio@divide\ratio#1#2{\calc@ratio@evaluate{#2}{#1}}
\newcount\calc@Ccount
\let\calc@numerator=\calc@Bcount
\let\calc@denominator=\calc@Ccount
\def\calc@ratio@evaluate#1#2{%
   \endgroup\begingroup
      \calc@assign@dimen\calc@numerator{#1}%
      \calc@assign@dimen\calc@denominator{#2}%
      \gdef\calc@the@ratio{}%
      \ifnum\calc@numerator<0 \calc@numerator-\calc@numerator
         \gdef\calc@the@ratio{-}%
      \fi
      \ifnum\calc@denominator<0 \calc@denominator-\calc@denominator
         \xdef\calc@the@ratio{\calc@the@ratio-}%
      \fi
      \calc@Acount\calc@numerator
      \divide\calc@Acount\calc@denominator
      \xdef\calc@the@ratio{\calc@the@ratio\number\calc@Acount.}%
      \calc@next@digit \calc@next@digit \calc@next@digit
      \calc@next@digit \calc@next@digit \calc@next@digit
   \endgroup
   \calc@multiply@by@real\calc@the@ratio
   \begingroup
   \calc@post@scan}
\def\calc@next@digit{%
      \multiply\calc@Acount\calc@denominator
      \advance\calc@numerator -\calc@Acount
      \multiply\calc@numerator 10
      \calc@Acount\calc@numerator
      \divide\calc@Acount\calc@denominator
      \xdef\calc@the@ratio{\calc@the@ratio\number\calc@Acount}}
\def\calc@multiply@by@real#1{\calc@Bdimen #1\calc@B \calc@B\calc@Bdimen}
\def\calc@real@multiply\real#1{\endgroup
   \calc@multiply@by@real{#1}\begingroup
   \calc@post@scan}
\def\calc@real@divide\real#1{\calc@ratio@evaluate{1pt}{#1pt}}
\let\maxof\@@italiccorr
\let\minof\@@italiccorr
\newskip\calc@Cskip
\newif\ifcalc@count@
\def\calc@maxmin@addsub#1#2#3{\begingroup
  \ifx\calc@A\calc@Acount%
    \calc@count@true
  \else
    \calc@count@false
  \fi
  \calc@maxmin@generic#1{#2}{#3}%
  \endgroup
  \calc@post@scan
}
\def\calc@maxmin@generic#1#2#3{%
  \begingroup
    \ifcalc@count@
      \calc@assign@count\calc@Ccount{#2}%
      \calc@assign@count\calc@Bcount{#3}%
      \def\minof{<}\def\maxof{>}%
      \global\calc@A\ifnum\calc@Ccount#1\calc@Bcount
        \calc@Ccount\else\calc@Bcount\fi
    \else
      \calc@assign@skip\calc@Cskip{#2}%
      \calc@assign@skip\calc@Bskip{#3}%
      \def\minof{<}\def\maxof{>}%
      \global\calc@A\ifdim\calc@Cskip#1\calc@Bskip
        \calc@Cskip\else\calc@Bskip\fi
    \fi
  \endgroup
}
\def\calc@maxmin@divmul#1#2#3#4{%
  \endgroup\begingroup
  \calc@count@true
  \aftergroup#1%
  \calc@maxmin@generic#2{#3}{#4}%
  \endgroup\begingroup
  \calc@post@scan
}
\def\calc@maxmin@multiply{\calc@maxmin@divmul\calc@multiplyBbyA}
\def\calc@maxmin@divide  {\calc@maxmin@divmul\calc@divideBbyA}
\def\calc@error#1{%
   \PackageError{calc}%
     {`#1' invalid at this point}%
     {I expected to see one of: + - * / )}}
\def\@settodim#1#2#3{%
  \setbox\@tempboxa\hbox{{#3}}%
  \dimen@ii=\z@
  \@tf@r\reserved@a #1\do{%
  \advance\dimen@ii\reserved@a\@tempboxa}%
  #2=\dimen@ii
  \setbox\@tempboxa\box\voidb@x}
\def\settototalheight{\@settodim{\ht\dp}}
\endinput
%%
%% End of file `calc.sty'.