info/examples/tip/absval.tip


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

% 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 3.3.12, p. I-57.
% Original source in file "reg1.TEX", starting line 1523.
\wlog{L: "absval.tip" ["reg1.TEX," l. 1523, p. I-57]}%
% This file DOES belong to format "texip."
\def\AbsoluteValue #1#2{% 
    \ifnum #1<0
        #2 = -#1\relax
    \else
        #2 = #1\relax
    \fi
}