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% double-page float package
%
% Copyright University of Washington
%
% Jim Fox
% fox@u.washington.edu
% http://weber.u.washington.edu/~fox/
%
\ProvidesPackage{dpfloat}[1997/09/21]
\NeedsTeXFormat{LaTeX2e}
% This package allows you to format a double-page figure or table
%
% It provides two environments:
%
% {fullpage} makes a full page figure or table
% {leftfullpage} like fullpage, but guarantees a left side page
%
% Example use:
%
% -------------------------------------------------------
% \begin{figure}[p]% will be the left-side figure
% \begin{leftfullpage}
% ...
% \end{leftfullpage}
% \end{figure}
% \begin{figure}[p]% will be the right-side figure
% \begin{fullpage}
% ...
% \end{fullpage}
% \end{figure}
% -------------------------------------------------------
%
%
% LaTeX's output routine is modified to reject left-page floats
% if they appear on odd pages (right page). These will then
% be moved to the next page (a left page).
%
% This is obviously dependent upon specific details of the
% output routine which are probably subject to change without notice.
%
\newif\if@LP \@LPfalse
% For each float we define a macro indicating whether or not
% it is 'left-page' only
\newbox\@@wholepage
\def\fullpage{\setbox\@@wholepage=\vbox\bgroup}
\def\endfullpage{\egroup\dp\@@wholepage\z@
\vbox to\textheight{\vss\unvbox\@@wholepage\vss}}
\def\leftfullpage{\setbox\@@wholepage=\vbox\bgroup}
\def\endleftfullpage{\egroup\dp\@@wholepage\z@
\vbox to\textheight{\vss\unvbox\@@wholepage\vss}\global\@LPtrue}
\let\oldend@float\end@float
\def\end@float{%
\if@LP\global\@namedef{LP:\expandafter\string\@currbox}{L}%
\else \global\@namedef{LP:\expandafter\string\@currbox}{X}%
\fi
\global\@LPfalse
\oldend@float
}
% Reject a left-page float that appears on an even page
\if@twoside
% reject a left-side float that appears on an odd page
\let\old@xtryfc\@xtryfc
\def\@xtryfc #1{%
\expandafter\if\csname LP:\string#1\endcsname L%
\ifodd\count0\global\@colht\z@
\typeout{I moved a leftpage float from page \the\count0.}%
\fi\fi
\old@xtryfc #1}
\else
% if you want to do something special for one-sided printing
% do it here
\fi
% end of dpfloat
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