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TeX 1995 July
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TeX CD-ROM July 1995 (Disc 1)(Walnut Creek)(1995).ISO
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macros
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tip
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weekofyr.tip
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1993-09-15
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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: 1.1
% Date: Sep 9, 1993
%
%
% This source code is documented in 26.22, p. III-392.
% Original source in file "macros6.TEX", starting line 1641.
\wlog{L: "weekofyr.tip" ["macros6.TEX," l. 1641, p. III-392]}%
% This file DOES belong to format "texip."
\InputD{doloop.tip}
\InputD{dateofw.tip}
\InputD{arbday.tip}
\InputD{prevday.tip}
\InputD{mondofda.tip}
\InputD{norpweek.tip}
\catcode`\@ = 11
\newcount\@WeekOfYearCounter
\newcount\@WeekOfYearYear
\newcount\@WeekOfYearMonth
\newcount\@WeekOfYearDay
\newcount\@WeekOfYearCopy
\def\WeekOfYear #1#2#3#4{%
\@WeekOfYearCopy = #1\relax
\ComputeMondayOfDate{#1}{#2}{#3}%
{\@WeekOfYearYear}{\@WeekOfYearMonth}{\@WeekOfYearDay}%
\def\@WeekOfYearCounter{#4}%
\@WeekOfYearCounter = 1
\@WeekOfYear
}
\newif\if@YearStop
\def\@WeekOfYear{%
\@YearStopfalse
\ifnum\@WeekOfYearCopy > \@WeekOfYearYear
\@YearStoptrue
\else
\ifnum\@WeekOfYearMonth = 1
\ifnum\@WeekOfYearDay = 1
\@YearStoptrue
\fi
\fi
\fi
\if@YearStop
\def\@WeekOfYearNext{\relax}%
\else
\def\@WeekOfYearNext{\@WeekOfYear}%
\expandafter\advance\@WeekOfYearCounter by 1
\PrevWeekSameDay{\@WeekOfYearYear}{\@WeekOfYearMonth}%
{\@WeekOfYearDay}%
{\@WeekOfYearYear}{\@WeekOfYearMonth}%
{\@WeekOfYearDay}%
\fi
\@WeekOfYearNext
}
\catcode`\@ = 12