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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 27.1.4.3, p. III-406.
% Original source in file "macros7.TEX", starting line 466.
\wlog{L: "oct.tip" ["macros7.TEX," l. 466, p. III-406]}%
% This file DOES belong to format "texip."
\def\Oct #1{%
    {%
        \count4 = #1%
        \count0 = \count4
        \divide\count0 by 8
        \ifnum \count0 > 0
            \Oct{\count0}% 
        \fi
        \count2 = \count0
        \multiply \count2 by -8
        \advance \count4 by \count2
        \the\count4
    }% 
}