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Diffstat (limited to 'info/examples/tex-in-practice/imodn.tip')
-rw-r--r-- | info/examples/tex-in-practice/imodn.tip | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/info/examples/tex-in-practice/imodn.tip b/info/examples/tex-in-practice/imodn.tip new file mode 100644 index 0000000000..d8168abd52 --- /dev/null +++ b/info/examples/tex-in-practice/imodn.tip @@ -0,0 +1,38 @@ +% 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 3.3.13, p. I-58. +% Original source in file "reg1.TEX", starting line 1566. +\wlog{L: "imodn.tip" ["reg1.TEX," l. 1566, p. I-58]}% +% This file DOES belong to format "texip." +\catcode`\@ = 11 +\newcount\@IModNCount +\newcount\@IModNCountCopy +\def\IModN #1#2#3{% + \@IModNCount = #1\relax + \@IModNCountCopy = #1\relax + \ifnum \@IModNCount < 0 + \errmessage{\string\IModN: \string#1 + (value \the\@IModNCount) is negative.}% + \fi + \ifnum #2< 1 + \errmessage{\string\IModN: \string#2 + (value #2) is negative or zero.}% + \fi + \divide\@IModNCount by #2\relax + \multiply\@IModNCount by #2\relax + #3 = \@IModNCountCopy + \advance #3by -\@IModNCount +} +\catcode`\@ = 12 |