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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