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%%
%% This is file `multiply.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% bez123.dtx (with options: `mult')
%%
%% -----------------------------------------------------------------
%% Author: Peter Wilson, Herries Press
%% Maintainer: Will Robertson (will dot robertson at latex-project dot org)
%% Copyright 1998--2004 Peter R. Wilson
%%
%% This work 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: <http://www.latex-project.org/lppl.txt>
%%
%% This work has the LPPL maintenance status "maintained".
%% The Current Maintainer of this work is Will Robertson.
%%
%% This work consists of the files listed in the README file.
%% -----------------------------------------------------------------
%%
\ProvidesPackage{multiply}[1998/10/14 v1.1 Multiplication of lengths without overflow]
\newlength{\n@fl@wa}
\newlength{\n@fl@wb}
\newlength{\n@fl@wc}
\newif\ifch@nge
\newcommand{\multnooverflow}[2]{%
\n@fl@wa = #1\relax%
\n@fl@wb = #2\relax%
\ch@ngefalse%
\ifnum\n@fl@wb = \@ne%
\else%
\ifnum\n@fl@wb = \z@%
\n@fl@wa = \z@%
\else%
\ifnum\n@fl@wb = \m@ne%
\ch@ngetrue%
\else%
\ifnum\n@fl@wa = \z@%
\else%
\ifnum\n@fl@wa = \@ne%
\n@fl@wa = \n@fl@wb%
\else%
\ifnum\n@fl@wa = \m@ne%
\n@fl@wa = -\n@fl@wb%
\else%
\ifnum\n@fl@wa < \z@%
\ch@ngetrue%
\n@fl@wa = -\n@fl@wa%
\fi%
\ifnum\n@fl@wb < \z@%
\n@fl@wb = -\n@fl@wb%
\ifch@nge%
\ch@ngefalse%
\else%
\ch@ngetrue%
\fi%
\fi%
\n@fl@wc = \maxdimen%
\divide\n@fl@wc by \n@fl@wb%
\advance\n@fl@wc by -1sp% \m@ne
\ifnum\n@fl@wa > \n@fl@wc%
\n@fl@wa = \maxdimen%
\PackageWarning{multiply}{Multiplication overflow}%
\else%
\multiply\n@fl@wa by \n@fl@wb%
\fi%
\fi%
\fi%
\fi%
\fi%
\fi%
\fi%
\ifch@nge%
\n@fl@wa = -\n@fl@wa%
\fi%
#1 = \n@fl@wa%
}
\endinput
%%
%% End of file `multiply.sty'.
|
