info/examples/tip/absdimen.tip


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% This macro source file is from the four volume series
% "TeX in Practice" by Stephan von Bechtolsheim, published
% 1993 by Springer-Verlag, New York.
% Copyright 1993 Stephan von Bechtolsheim.
% No warranty or liability is assumed.
% This macro may be copied freely if no fees other than
% media cost or shipping charges are charged and as long
% as this copyright and the following source code itself
% is not changed. Please see the series for further information.
%
% Version: 1.0
% Date: May 1, 1993
%
%
% This source code is documented in 4.1.11, p. I-91.
% Original source in file "reg2.TEX", starting line 601.
\wlog{L: "absdimen.tip" ["reg2.TEX," l. 601, p. I-91]}%
% This file DOES belong to format "texip."
\def\AbsoluteDimension #1#2{% 
    \ifdim #1 < 0pt
        #2 = -#1\relax
    \else
        #2 = #1\relax
    \fi
}