| Current File : //usr/share/texlive/texmf-dist/tex/latex/tools/calc.sty |
%%
%% 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.
%%
%% The source is maintained by the LaTeX Project team and bug
%% reports for it can be opened at https://latex-project.org/bugs/
%% (but please observe conditions on bug reports sent to that address!)
%%
%%
%% Copyright (C) 1993-2020
%% 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
%% https://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}
[2017/05/25 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'.