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+%--------------------------------------------------------------------------
+% This is small extension of T. Rokicki's EPSF.TEX (from DVIPS 5.58):
+%  -- allows safe including of EPS files generated by DVIPS
+%  -- can also display bounding boxes.
+%--------------------------------------------------------------------------
+% AUTHORS: Bogus\l{}aw Jackowski and Piotr Pianowski
+%   BOP s.c.
+%   ul. Piastowska 70, 80-363 Gda\'nsk, Poland
+%   email: B.Jackowski@GUST.org.pl
+% USAGE:
+%   \eps{file.eps} % instead of \epsffile{file.eps}
+% The following settings of the parameter \tracingeps are recognized:
+%   \tracingeps=0  % default, no extra information displayed
+%   \tracingeps=1  % displays bounding boxes and file names
+%   \tracingeps>1  % displays graphics, bounding boxes and file names
+% HISTORY:
+% ver. 0.5  19 VIII 1994
+% ver. 0.51 25 VIII 1994 
+%      * \epsnamecolor added
+% ver. 0.52 31 VIII 1994 
+%      * \eps renamed to \epsraw
+%      * \tps renamed to \eps
+% ver. 0.53 9 I 1995
+%      * `\isls false N' added to \eps 
+%      * virtually active slash neutralized
+% ver. 0.54 9 III 1995
+%      * \eps clears bop-hook
+% ver. 0.55 27 III 1995
+%      * a patch neutralizing unnecessary rounding added
+% ver. 0.56  3 X 1995
+%      * \special commands surrounding EPS box are to be nested in the \vbox
+% ver. 0.57  31 VIII 1996
+%      * odd characters in names enabled
+% ver. 0.58  21 III 1997
+%      * setpageparams and setpage neutralized
+% ver. 0.585 25 III 1997
+%      * comments touched
+% ver. 0.59  7 VI 1998
+%      * EPSF.TEX included
+% ver. 0.60  10 I 1999
+%      * safe multiplication of eps dimensions by 10 (expected to be
+%        included in the newest version of Rokicki's package)
+% ver. 0.61  29 III 2000
+%      * \eps expands to \hbox
+% ver. 0.62  13 (Friday) VII 2001
+%      * setpagedevice neutralized (why only now?) along with a bundle of 
+%      	 commands specifying paper size (a0, a1, ... , b0, b1, ... , etc.)
+%--------------------------------------------------------------------------
+\edef\slashcatcode{\the\catcode`\/}
+\catcode`\/12
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%% \input epsf  -- inserted below %%%%%%%%%%%%%%%%%
+%   EPSF.TEX macro file:
+%   Written by Tomas Rokicki of Radical Eye Software, 29 Mar 1989.
+%   Revised by Don Knuth, 3 Jan 1990.
+%   Revised by Tomas Rokicki to accept bounding boxes with no
+%      space after the colon, 18 Jul 1990.
+%
+%   TeX macros to include an Encapsulated PostScript graphic.
+%   Works by finding the bounding box comment,
+%   calculating the correct scale values, and inserting a vbox
+%   of the appropriate size at the current position in the TeX document.
+%
+%   To use with the center environment of LaTeX, preface the \epsffile
+%   call with a \leavevmode.  (LaTeX should probably supply this itself
+%   for the center environment.)
+%
+%   To use, simply say
+%   \input epsf           % somewhere early on in your TeX file
+%   \epsfbox{filename.ps} % where you want to insert a vbox for a figure
+%
+%   Alternatively, you can type
+%
+%   \epsfbox[0 0 30 50]{filename.ps} % to supply your own BB
+%
+%   which will not read in the file, and will instead use the bounding
+%   box you specify.
+%
+%   The effect will be to typeset the figure as a TeX box, at the
+%   point of your \epsfbox command. By default, the graphic will have its
+%   `natural' width (namely the width of its bounding box, as described
+%   in filename.ps). The TeX box will have depth zero.
+%
+%   You can enlarge or reduce the figure by saying
+%     \epsfxsize=<dimen> \epsfbox{filename.ps}
+%   (or
+%     \epsfysize=<dimen> \epsfbox{filename.ps})
+%   instead. Then the width of the TeX box will be \epsfxsize and its
+%   height will be scaled proportionately (or the height will be
+%   \epsfysize and its width will be scaled proportiontally).  The
+%   width (and height) is restored to zero after each use.
+%
+%   A more general facility for sizing is available by defining the
+%   \epsfsize macro.    Normally you can redefine this macro
+%   to do almost anything.  The first parameter is the natural x size of
+%   the PostScript graphic, the second parameter is the natural y size
+%   of the PostScript graphic.  It must return the xsize to use, or 0 if
+%   natural scaling is to be used.  Common uses include:
+%
+%      \epsfxsize  % just leave the old value alone
+%      0pt         % use the natural sizes
+%      #1          % use the natural sizes
+%      \hsize      % scale to full width
+%      0.5#1       % scale to 50% of natural size
+%      \ifnum#1>\hsize\hsize\else#1\fi  % smaller of natural, hsize
+%
+%   If you want TeX to report the size of the figure (as a message
+%   on your terminal when it processes each figure), say `\epsfverbosetrue'.
+%
+\newread\epsffilein    % file to \read
+\newif\ifepsffileok    % continue looking for the bounding box?
+\newif\ifepsfbbfound   % success?
+\newif\ifepsfverbose   % report what you're making?
+\newif\ifepsfdraft     % use draft mode?
+\newdimen\epsfxsize    % horizontal size after scaling
+\newdimen\epsfysize    % vertical size after scaling
+\newdimen\epsftsize    % horizontal size before scaling
+\newdimen\epsfrsize    % vertical size before scaling
+\newdimen\epsftmp      % register for arithmetic manipulation
+\newdimen\pspoints     % conversion factor
+%
+\pspoints=1bp          % Adobe points are `big'
+\epsfxsize=0pt         % Default value, means `use natural size'
+\epsfysize=0pt         % ditto
+%
+\def\epsfbox#1{\global\def\epsfllx{72}\global\def\epsflly{72}%
+   \global\def\epsfurx{540}\global\def\epsfury{720}%
+   \def\lbracket{[}\def\testit{#1}\ifx\testit\lbracket
+   \let\next=\epsfgetlitbb\else\let\next=\epsfnormal\fi\next{#1}}%
+%
+\def\epsfgetlitbb#1#2 #3 #4 #5]#6{\epsfgrab #2 #3 #4 #5 .\\%
+   \epsfsetgraph{#6}}%
+%
+\def\epsfnormal#1{\epsfgetbb{#1}\epsfsetgraph{#1}}%
+%
+\def\epsfgetbb#1{%
+%
+%   The first thing we need to do is to open the
+%   PostScript file, if possible.
+%
+\openin\epsffilein=#1
+\ifeof\epsffilein\errmessage{I couldn't open #1, will ignore it}\else
+%
+%   Okay, we got it. Now we'll scan lines until we find one that doesn't
+%   start with %. We're looking for the bounding box comment.
+%
+   {\epsffileoktrue \chardef\other=12
+    \def\do##1{\catcode`##1=\other}\dospecials \catcode`\ =10
+    \loop
+       \read\epsffilein to \epsffileline
+       \ifeof\epsffilein\epsffileokfalse\else
+%
+%   We check to see if the first character is a % sign;
+%   if not, we stop reading (unless the line was entirely blank);
+%   if so, we look further and stop only if the line begins with
+%   `%%BoundingBox:'.
+%
+          \expandafter\epsfaux\epsffileline:. \\%
+       \fi
+   \ifepsffileok\repeat
+   \ifepsfbbfound\else
+    \ifepsfverbose\message{No bounding box comment in #1; using defaults}\fi\fi
+   }\closein\epsffilein\fi}%
+%
+%   Now we have to calculate the scale and offset values to use.
+%   First we compute the natural sizes.
+%
+\def\epsfclipon{\def\epsfclipstring{ clip}}%
+\def\epsfclipoff{\def\epsfclipstring{\ifepsfdraft\space clip\fi}}%
+\epsfclipoff
+%
+\def\epsfsetgraph#1{%
+   \epsfrsize=\epsfury\pspoints
+   \advance\epsfrsize by-\epsflly\pspoints
+   \epsftsize=\epsfurx\pspoints
+   \advance\epsftsize by-\epsfllx\pspoints
+%
+%   If `epsfxsize' is 0, we default to the natural size of the picture.
+%   Otherwise we scale the graph to be \epsfxsize wide.
+%
+   \epsfxsize\epsfsize\epsftsize\epsfrsize
+   \ifnum\epsfxsize=0 \ifnum\epsfysize=0
+      \epsfxsize=\epsftsize \epsfysize=\epsfrsize
+      \epsfrsize=0pt
+%
+%   We have a sticky problem here:  TeX doesn't do floating point arithmetic!
+%   Our goal is to compute y = rx/t. The following loop does this reasonably
+%   fast, with an error of at most about 16 sp (about 1/4000 pt).
+% 
+     \else\epsftmp=\epsftsize \divide\epsftmp\epsfrsize
+       \epsfxsize=\epsfysize \multiply\epsfxsize\epsftmp
+       \multiply\epsftmp\epsfrsize \advance\epsftsize-\epsftmp
+       \epsftmp=\epsfysize
+       \loop \advance\epsftsize\epsftsize \divide\epsftmp 2
+       \ifnum\epsftmp>0
+          \ifnum\epsftsize<\epsfrsize\else
+             \advance\epsftsize-\epsfrsize \advance\epsfxsize\epsftmp \fi
+       \repeat
+       \epsfrsize=0pt
+     \fi
+   \else \ifnum\epsfysize=0
+     \epsftmp=\epsfrsize \divide\epsftmp\epsftsize
+     \epsfysize=\epsfxsize \multiply\epsfysize\epsftmp   
+     \multiply\epsftmp\epsftsize \advance\epsfrsize-\epsftmp
+     \epsftmp=\epsfxsize
+     \loop \advance\epsfrsize\epsfrsize \divide\epsftmp 2
+     \ifnum\epsftmp>0
+        \ifnum\epsfrsize<\epsftsize\else
+           \advance\epsfrsize-\epsftsize \advance\epsfysize\epsftmp \fi
+     \repeat
+     \epsfrsize=0pt
+    \else
+     \epsfrsize=\epsfysize
+    \fi
+   \fi
+%
+%  Finally, we make the vbox and stick in a \special that dvips can parse.
+%
+   \ifepsfverbose\message{#1: width=\the\epsfxsize, height=\the\epsfysize}\fi
+   \epsftmp=10\epsfxsize \divide\epsftmp\pspoints
+   \vbox to\epsfysize{\vfil\hbox to\epsfxsize{%
+      \ifnum\epsfrsize=0\relax
+        \special{PSfile=\ifepsfdraft psdraft.ps\else#1\fi\space
+             llx=\epsfllx\space lly=\epsflly\space
+             urx=\epsfurx\space ury=\epsfury\space rwi=\number\epsftmp
+             \epsfclipstring}%
+      \else
+        \epsfrsize=10\epsfysize \divide\epsfrsize\pspoints
+        \special{PSfile=\ifepsfdraft psdraft.ps\else#1\fi\space
+             llx=\epsfllx\space lly=\epsflly\space
+             urx=\epsfurx\space ury=\epsfury\space rwi=\number\epsftmp\space
+             rhi=\number\epsfrsize \epsfclipstring}%
+      \fi
+      \hfil}}%
+\global\epsfxsize=0pt\global\epsfysize=0pt}%
+%
+%   We still need to define the tricky \epsfaux macro. This requires
+%   a couple of magic constants for comparison purposes.
+%
+{\catcode`\%=12 \global\let\epsfpercent=%\global\def\epsfbblit{%BoundingBox}}%
+%
+%   So we're ready to check for `%BoundingBox:' and to grab the
+%   values if they are found.
+%
+\long\def\epsfaux#1#2:#3\\{\ifx#1\epsfpercent
+   \def\testit{#2}\ifx\testit\epsfbblit
+      \epsfgrab #3 . . . \\%
+      \epsffileokfalse
+      \global\epsfbbfoundtrue
+   \fi\else\ifx#1\par\else\epsffileokfalse\fi\fi}%
+%
+%   Here we grab the values and stuff them in the appropriate definitions.
+%
+\def\epsfempty{}%
+\def\epsfgrab #1 #2 #3 #4 #5\\{%
+\global\def\epsfllx{#1}\ifx\epsfllx\epsfempty
+      \epsfgrab #2 #3 #4 #5 .\\\else
+   \global\def\epsflly{#2}%
+   \global\def\epsfurx{#3}\global\def\epsfury{#4}\fi}%
+%
+%   We default the epsfsize macro.
+%
+\def\epsfsize#1#2{\epsfxsize}
+%
+%   Finally, another definition for compatibility with older macros.
+%
+\let\epsffile=\epsfbox
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%% End of EPSF %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% ---
+\newcount\tracingeps \tracingeps0
+% ---
+\newbox\tmpepsbox
+% ---
+\ifx\epsdirundefined\epsdir\def\epsdir{}\fi
+\def\epsnamecolor{1 0 0}
+% ---
+% BOTH \eps and \epsraw ``normalize'' the eps name, as one may wish
+% to use \epsraw separately
+% ---
+\def\epsraw{\begingroup\escapechar-1\catcode`\%12\def~{\string~}\epsrawcont}
+\def\epsrawcont#1{%
+ \xdef\theepsname{\expandafter\string\csname#1\endcsname}\endgroup
+ \ifnum\tracingeps=0 \hbox{\epsffile{\epsdir\theepsname}}\fi
+ \ifnum\tracingeps>0
+  \hbox{\setbox\tmpepsbox\hbox{\epsffile{\epsdir\theepsname}}%
+   \ifnum\tracingeps>1 \rlap{\copy\tmpepsbox}\fi
+   \vbox{\offinterlineskip
+     \hrule\vskip-.4pt
+     \hbox to\wd\tmpepsbox{\vrule\hss\vbox to\ht\tmpepsbox{
+       \vss\hbox{\tt \special{ps:gsave \epsnamecolor\space setrgbcolor}%
+       \theepsname\special{ps:grestore}}\vss}\hss\vrule}
+     \vskip-.4pt\hrule
+   }}\fi}
+% ---
+\def\eps{\hbox\bgroup
+  \begingroup \escapechar-1 \catcode`\%12 \def~{\string~}\epscont}
+\def\epscont#1{%
+  \xdef\theepsname{\expandafter\string\csname#1\endcsname}\endgroup
+  \vbox{\special{ps: /SItps save N /isls false N
+    statusdict begin
+      /setpageparams {pop pop pop pop} def /setpage {pop pop pop} def
+    end
+    userdict begin
+      /bop-hook {} def /setpagedevice {pop} def
+      /a0 {} def /a1 {} def /a2 {} def /a3 {} def /a4 {} def /a5 {} def
+      /a6 {} def /a7 {} def /a8 {} def /a9 {} def /a10 {} def
+      /b0 {} def /b1 {} def /b2 {} def /b3 {} def /b4 {} def /b5 {} def
+      /letter {} def /note {} def /legal {} def
+      /halfletter {} def /11x17 {} def /ledger {} def
+      /flsa {} def /flse {} def
+    end }%
+  \epsraw\theepsname\special{ps: SItps restore }}\egroup}
+% ---
+% Redefinition of epsf macros:
+%
+% The values of `rwi' and `rhi' parameters are to be given in tenths
+% of big point; the older version of the epsf package used to multiply
+% a dimen register by 10, which put severe limitations on the
+% available EPS size.
+%
+% The macro `\decimalshift' multiplies a given value by 10 ``syntactically,''
+% i.e., accomplishes ``decimal shifting''; the following conditions
+% are assumed to hold:
+%  *  leading zeros are meaningless;
+%  *  <digit>+<period><dimen unit> is a proper form of a dimen value;
+%  *  the command `\the' applied to a dimen register yields a canonical form:
+%        [<minus>]<digit>+[<period><digit>+]<pt unit>
+%     where <pt unit> are `p' and `t' characters having category code 12.
+%
+\def\decimalshift#1{% #1 -- a dimen register
+    \expandafter\expandafter\expandafter
+    \decimalsplit\expandafter\gobblePT\the#1.\relax
+}%
+\def\decimalsplit#1.#2\relax{%
+    \ifnum#1=0 \ifdim#11sp=-1sp -\fi \else #1\fi
+    \ifdim0#2sp=0sp 0\else \fractionshift#2\fi
+}%
+\def\fractionshift#1#2.{\ifnum0#2=0 #1\else #1.#2\fi}%
+{\catcode`\p12 \catcode`\t12 \gdef\gobblePT#1pt{#1}}%
+\def\pttobp{0.99626401}% = 72/72.27
+% ---
+\def\epsfsetgraph#1{%
+   \epsfrsize=\epsfury\pspoints
+   \advance\epsfrsize by-\epsflly\pspoints
+   \epsftsize=\epsfurx\pspoints
+   \advance\epsftsize by-\epsfllx\pspoints
+%
+%   If `epsfxsize' is 0, we default to the natural size of the picture.
+%   Otherwise we scale the graph to be \epsfxsize wide.
+%
+   \epsfxsize\epsfsize\epsftsize\epsfrsize
+   \ifnum\epsfxsize=0 \ifnum\epsfysize=0
+      \epsfxsize=\epsftsize \epsfysize=\epsfrsize
+      \epsfrsize=0pt
+%
+%   We have a sticky problem here:  TeX doesn't do floating point arithmetic!
+%   Our goal is to compute y = rx/t. The following loop does this reasonably
+%   fast, with an error of at most about 16 sp (about 1/4000 pt).
+% 
+     \else\epsftmp=\epsftsize \divide\epsftmp\epsfrsize
+       \epsfxsize=\epsfysize \multiply\epsfxsize\epsftmp
+       \multiply\epsftmp\epsfrsize \advance\epsftsize-\epsftmp
+       \epsftmp=\epsfysize
+       \loop \advance\epsftsize\epsftsize \divide\epsftmp 2
+       \ifnum\epsftmp>0
+          \ifnum\epsftsize<\epsfrsize\else
+             \advance\epsftsize-\epsfrsize \advance\epsfxsize\epsftmp \fi
+       \repeat
+       \epsfrsize=0pt
+     \fi
+   \else \ifnum\epsfysize=0
+     \epsftmp=\epsfrsize \divide\epsftmp\epsftsize
+     \epsfysize=\epsfxsize \multiply\epsfysize\epsftmp   
+     \multiply\epsftmp\epsftsize \advance\epsfrsize-\epsftmp
+     \epsftmp=\epsfxsize
+     \loop \advance\epsfrsize\epsfrsize \divide\epsftmp 2
+     \ifnum\epsftmp>0
+        \ifnum\epsfrsize<\epsftsize\else
+           \advance\epsfrsize-\epsftsize \advance\epsfysize\epsftmp \fi
+     \repeat
+     \epsfrsize=0pt
+    \else
+     \epsfrsize=\epsfysize
+    \fi
+   \fi
+%
+%  Finally, we make the vbox and stick in a \special that dvips can parse.
+%
+   \ifepsfverbose\message{#1: width=\the\epsfxsize, height=\the\epsfysize}\fi
+   \epsftmp=\pttobp\epsfxsize
+   \vbox to\epsfysize{\vfil\hbox to\epsfxsize{%
+      \ifnum\epsfrsize=0\relax
+        \special{PSfile=\ifepsfdraft psdraft.ps\else#1\fi\space
+             llx=\epsfllx\space lly=\epsflly\space
+             urx=\epsfurx\space ury=\epsfury\space
+             rwi=\decimalshift\epsftmp
+             \epsfclipstring}%
+      \else
+        \epsfrsize=\pttobp\epsfysize
+        \special{PSfile=\ifepsfdraft psdraft.ps\else#1\fi\space
+             llx=\epsfllx\space lly=\epsflly\space
+             urx=\epsfurx\space ury=\epsfury\space
+             rwi=\decimalshift\epsftmp\space
+             rhi=\decimalshift\epsfrsize
+             \epsfclipstring}%
+      \fi
+      \hfil}}%
+\global\epsfxsize=0pt\global\epsfysize=0pt}%
+% ---
+\catcode`\/\slashcatcode
+% ---
+\endinput