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% Documentation:
% \exerc{n} -- Begin exercise number "n".
% \rexerc{n} -- Begin recommended exercise number "n".
% \answer -- Answer to the exercise (currently just disable indentation).
% Usually this would be like: \(r)exerc{(n)} (question) \par\answer (answer).
%
% \soffsets -- Place before a table to avoid horizontal margins on cells.
% \eoffsets -- Place after.
% \offset{a}{b} -- An offset indication.
% Usually, there's one row for the offset indication, with 3% of page width per
% bit. Then 32 bits per row. This is usually used for illustrating a binary
% format.
%
% \mixbox{...} -- A box for MIX 5-byte (plus sign) registers.
% \mixsmbox{...} -- A box for MIX 2-byte (plus sign) registers.
% \byte{n} -- Byte with contents "n".
% \twobytes{n} -- Two bytes.
% \threebytes{n} -- Three bytes.
% \fourbytes{n} -- Four bytes.
% \fivebytes{n} -- Five bytes.
% \sixbytes{n} -- Six bytes.
% The last six commands should only be used inside \mixbox or \mixsmbox. These
% two commands should have the appropiate number of bytes including sign (six or
% three, respectively).
% Note: For tables, don't use \mixbox or \mixsmbox. Instead, put the table
% between \soffsets and \eoffsets, add ~ when some separation is needed and
% make sure the cells containing the bytes (one cell per box) has borders.
\font\manual=manfnt
\outer\def\exerc#1{\medbreak\paragraph{ #1.}}
\outer\def\rexerc#1{\medbreak\paragraph{\noindent\llap{\manual\char'170\rm\kern.15em} #1.}}
\outer\def\answer{\par\vskip3pt\nobreak\noindent}
% Deprecated
%\outer\def\exercise#1{\medbreak\noindent\llap{\manual\char'170\rm\kern.15em}{\bf\small EJERCICIO #1}\par\nobreak\noindent}
%\def\onpart#1#2{\setcounter{part}{#1}\part{#2}}
%\def\onchapter#1#2{\setcounter{chapter}{#1}\chapter{#2}}
%\def\onsection#1#2{\setcounter{section}{#1}\section{#2}}
%\def\onsubsection#1#2{\setcounter{subsection}{#1}\section{#2}}
%% MACROS FOR MIX BOXES (mostly from taocpmac.tex)
\def\ticky#1{\leavevmode\hbox{\chardef\_=`\_\tt#1}}
\def\Hedge#1{\vbox{\dimen0=#1 em \advance\dimen0 .4 pt \hrule width \dimen0}} \def\Hed#1{\vbox{\dimen0=1.4em\relax \dimen0=#1\dimen0\relax \advance\dimen0 .4pt\relax \hrule width \dimen0}}
\def\hedge{\Hedge{8.4}}
\def\smhedge{\Hedge{4.2}}
\def\vedge{\vrule height 1.05em depth .55em} % 16pt
\def\tick{\vrule height 0.2em}
\def\Byte#1#2{\hbox to #1em{\hfill\ticky{#2}\hfill\hskip.4 pt }\hskip-.4pt \vrule}
\def\byte{\Byte{1.4}}
\newcount\nbytes
\newdimen\byteswidth
\newdimen\clearance
\clearance=4.175pt
\def\cb{\hskip-\clearance plus 1 fill } %center bytes
% #1=number of bytes, #2=total width, #3=height to tick, #4=depth to tick,
% #5=contents
\def\multibytes#1#2#3#4#5{\nbytes=1 \byteswidth=#2em
\hbox to \byteswidth{\hfill{\tt#5}\hskip\clearance \hskip.4pt}\hskip-\byteswidth
\divide\byteswidth #1
\loop\ifnum\nbytes<#1 \advance\nbytes by1
\hskip\byteswidth
\hskip-.4pt\vrule height -#4 em \hskip -.4pt \vrule depth -#3 em \repeat
\hskip\byteswidth \hskip-.4pt \vrule}
\def\twobytes{\multibytes2{2.8}{.85}{.35}}
\def\threebytes{\multibytes3{4.2}{.85}{.35}}
\def\fourbytes{\multibytes4{5.6}{.85}{.35}}
\def\fivebytes{\multibytes5{7.0}{.85}{.35}}
\def\sixbytes{\multibytes6{9.0}{.95}{.45}}
\def\opensign#1{\lower 5.5pt\vbox to 16pt{\hbox to 14pt{\hfil\tick}\vfill
\hbox to 14pt{\hfil\ticky{#1}\hfil}\vfill\hbox to 14pt{\hfil\tick}}}
\def\textindentindent#1{\noindent\hbox to 40pt{\hss#1\ }\!}
\def\punct#1{\ifinner \,#1 \else\rlap{\enspace#1}\fi} % punctuation after box
\def\mixbox#1{\,\hbox{\lower 5.5pt\vbox{\hedge\vskip-1.2pt\hbox{\vedge#1}\vskip-5.5pt\hedge}}\,}
\def\mixsmbox#1{\,\hbox{\lower 5.5pt\vbox{\smhedge\vskip-1.2pt\hbox{\vedge#1}\vskip-5.5pt\smhedge}}\,}
\def\soffsets{\begin{center}\setlength\tabcolsep{0pt}}
\def\offset#1#2{\small\ #1\hfill{}#2\ }
\def\eoffsets{\end{center}}
% Notices
\def\sremember#1{\begin{center}\begin{tabular}{|p{0.9\textwidth}|}\multicolumn{1}{p{0.9\textwidth}}{{\kern-.3em\small {[}#1{]}}}\tabularnewline\hline\kern-1ex}
\def\eremember{\tabularnewline\hline\end{tabular}\par\end{center}\vspace{.3em}}
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