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algorithm2e.sty
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algorithm2e.sty
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% algorithm2e.sty --- style file for algorithms
% almost everything can be customized by users. See the document for more explanations
%% Copyright 1996-2008 Christophe Fiorio
%
% This program may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.2
% of this license or (at your option) any later version.
% The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.2 or later is part of all distributions of LaTeX
% version 1999/12/01 or later.
%
% This program consists of the files algorithm2e.sty and algorithm2e.tex and algorithm2e-compatibility.sty
%
% Report bugs and comments to:
% - algorithm2e-announce@lirmm.fr mailing list for announcement about releases^^J%
% - algorithm2e-discussion@lirmm.fr mailing list for discussion about package^^J%
% subscribe by emailing sympa@lirmm.fr with 'subscribe <list> <firstname name>'^^J%
%
% $Id: algorithm2e.sty,v 4.1 2009/12/15 08:54:08 cfiorio Exp $
%
% PACKAGES REQUIRED:
%
% - float (in contrib/supported/float)
% - ifthen (in base)
% - xspace (in packages/tools)
% - relsize (in contrib/misc/relsize.sty)
%
%%%%%%%%%%%%%%% Release 4.01
%
% Package options:
% ---------------
% - oldcommands : to use old command names
% - french, english, german,
% portuguese, czech, italiano,
% slovak : for the name of the algorithm and some keyword code
% - onelanguage : to simply switch keyword from one language to another without changing
% keyword commands
% - boxed, boxruled, ruled, tworuled,
% algoruled, plain : layout of the algorithm
% - algo2e : environment is algorithm2e instead of algorithms and \listofalgorithmes
% instead of \listofalgorithms
% - slide : to use when making slides
% - noline,lined,vlined : how block are designed.
% - shortend, longend, noend : short or long end keyword as endif for e.g.
% - linesnumbered : auto numbering of the algorithm's lines
% - linesnumberedhidden : to hide autonumbered lines (show number on a line with \ShowLn
% - commentsnumbered, inoutnumbered : to autonumber comments and inout keywords (by defaut not numbered)
% - rightnl : to have line number on the right instead of on the left as default
% - algonl : line numbers preceded by algo number
% - scright, scleft : right or left justified side comments
% - fillcomment, nofillcomment : end mark of comment is flushed to the right so comments fill the line
% - dotocloa : add an entry in the toc for list of algorithms (require tocbibind package)
% - endfloat : add algoendfloat environment pushing algorithm so written to the end of document
% - resetcount, noresetcount : start value of line numbers.
% - algopart,algochapter,algosection : algo numbering within part, chapter or section
% - titlenumbered,titlenotnumbered : numbering of title set by \Titleofalgo
% - figure : algorithms are figures, numbered as figures, and put in the list of figures.
% - procnumbered : procedure or function are numbered as algorithm
% - nokwfunc : procedure or function name doens't become a command
% - norelsize : don't use relsize package (useful if it breaks the compatibily)
%
% defaults are; english,plain,resetcount,titlenotnumbered
%
%%%%%%%%%%%%%%
%
% Short summary
% -------------
%
% algorithm is an environment for writing algorithm in LaTeX2e.
% Almost all is customizable. You can add keywords, change style, change the layout, ...
% It provide macros that allow you to create differents sorts of key words, therefore a set of predefined key
% word is gived.
%
% IT should be used as follows
%
% \begin{algorithm}
% ...
% ...
% \end{algorithm}
%
%
% IMPORTANT : each line MUST end with \;
%
% Note that if you define macros outside algorithm environment they
% are avaible in all the document and particulary you can use then
% inside all algorithms without re-define them.
%
% an example:
%
% \begin{algorithm}
% \SetAlgoLined
% \KwIn{this text}
% \KwOut{how to write algorithm with \LaTeX2e }
%
% initialization\;
% \While{not at end of this document}{
% read current section\;
% \eIf{understand}{
% go to next section\;
% current section becomes this one\;
% }{
% go back to the beginning of current section\;
% }
% }
% \caption{How to write algorithm}
% \end{algorithm}
%
%
%%%%%%%%%%%%%% predefined keywords
%
% \KwIn{input}
% \KwOut{output}
% \KwData{input}
% \KwResult{output}
% \KwTo % a simple keyword
% \KwFrom % a simple keyword
% \KwRet{[value]}
% \Return{[value]}
% \Begin{block inside}
% \eIf{condition}{Then Block}{Else block} % in blocks
% \If{condition}{Then block} % in a block
% \uIf{condition}{Then block} % in a block unended
% \lIf{condition}{Else text} % on the same line
% \Else{inside Else} % in a block
% \lElse{Else text} % on the same line
% \uElse{Else text} % in a block unended
% \ElseIf{inside Elseif} % in a block
% \lElseIf{Elseif text} % on the same line
% \uElseIf{Elseif text} % in a block unended
% \Switch{Condition}{Switch block}
% \Case{a case}{case block} % in a block
% \lCase{a case}{case text} % on the same line
% \Other{otherwise block} % in a block
% \lOther{otherwise block} % on the same line
% \For{condition}{text loop} % in a block
% \lFor{condition}{text} % on the same line
% \ForEach{condition}{text loop} % in a block
% \lForEach{condition}{text} % on the same line
% \ForPar{condition}{text loop} % in a block
% \lForPar{condition}{text} % on the same line
% \While{condition}{text loop} % in a block
% \lWhile{condition}{text loop} % on the same line
% \Repeat{End condition}{text loop} % in a block
% \lRepeat{condition}{text} % on the same line
%
%%%%%%%%%%%%%%
%
% History:
%
% - december 14 2009 - revision 4.01
% * ADD : new command \SetKwHangingKw{Name}{text} (hanging indent with keyword): This creates a
% hanging indent much like \texttt{SetKwInput}, except that it removes the trailing `:'
% and does not reset numbering.
%
% - november 17 2009 - revision 4.00 -
%
% * CHANGE : IMPORTANT : some commands have been renamed to have consistent naming (CamlCase
% syntax) and old commands are no more available. If you doesn't want to change
% your mind or use old latex files, you can use oldcommands option to enable old
% commands back.
% text. Here are these commands:
% - \SetNoLine becomes \SetAlgoNoLine
% - \SetVline becomes \SetAlgoVlined
% - \Setvlineskip becomes \SetVlineSkip
% - \SetLine becomes \SetAlgoLined
% - \dontprintsemicolon becomes \DontPrintSemicolon
% - \printsemicolon becomes \PrintSemicolon
% - \incmargin becomes \IncMargin
% - \decmargin becomes \DecMargin
% - \setnlskip becomes \SetNlSkip
% - \Setnlskip becomes \SetNlSkip
% - \setalcapskip becomes \SetAlCapSkip
% - \setalcaphskip becomes \SetAlCapHSkip
% - \nlSty becomes \NlSty
% - \Setnlsty becomes \SetNlSty
% - \linesnumbered becomes \LinesNumbered
% - \linesnotnumbered becomes \LinesNotNumbered
% - \linesnumberedhidden becomes \LinesNumberedHidden
% - \showln becomes \ShowLn
% - \showlnlabel becomes \ShowLnLabel
% - \nocaptionofalgo becomes \NoCaptionOfAlgo
% - \restorecaptionofalgo becomes \RestoreCaptionOfAlgo
% - \restylealgo becomes \RestyleAlgo
% - gIf macros and so on do no more exist
% * NEW: - Compatibily with other packages improven by changing name of internal
% macros. Algorithm2e can now be used with arabtex for example, if this last is
% loaded after algorithm2e package.
% * ADD: - OPTION endfloat: endfloat packages doesn't allow float environment inside other
% environment. So using it with figure option of algorithm2e makes error. This
% option enables a new environment algoendfloat to be used instead of algorithm
% environment that put algorithm at the end. algoendfloat environment make
% algorithm acting as endfloat figures. This option requires endfloat packages.
% * ADD: - OPTION norelsize: starting from this release (v4.00), algorithm2e package uses
% relsize package in order to get relative size for lines numbers; but it seems
% that some rare classes (such as inform1.cls) are not compatible with relsize; to
% have algorithm2e working, this option makes algorithm2e not to load relsize
% package and go back to previous definition by using \scriptsize font for lines
% numbers.
% * ADD: - OPTION onelanguage: allow, if using standard keywords listed below, to switch
% from one language to another without changing keywords by using appropriate
% language option :
% . KwIn, KwOut, KwData, KwResult
% . KwTo KwFrom
% . KwRet, Return
% . Begin
% . Repeat
% . If, ElseIf, Else
% . Switch, Case, Other
% . For, ForPar, ForEach, ForAll, While
% .
% * ADD: - OPTION rightnl: put lines numbers to the right of the algorithm instead of left.
% * ADD: new commands \setRightLinesNumbers and \setLeftLinesNumbers which sets the lines
% numbers to the right or to the left of the algorithm.
% * ADD: - new kind of keywords : KwArray used to define arrays:
% \SetKwArray{Kw}{array} defines an array keywords Kw called array and printed in
% DataSty style when call with \Kw. It can be used with one argument which
% denotes the element index: \Kw{n} prints array[n] with array in DataSty and n in
% ArgSty.
% * ADD/FIX: rules of ruled, algoruled, tworuled styles used rules of different sizes! This
% is now fixed. Moreover size of the rules is now controlled by a length and so
% can be customized by the user.
% \algoheightrule is the height of the rules and can be changed via \setlength
% \algoheightruledefault is the default height of he rules (0.8pt)
% \algotitleheightrule is the height of the rule that comes just after the
% caption in ruled and algoruled style; it can be changed via \setlength
% \algotitleheightruledefault is the default height of this rules (0.8pt)
% Thanks to Philippe Dumas who reports the bug and make the suggestion.
% * ADD: - \SetAlgoCaptionSeparator which sets the separator between Algorithm 1 and the
% title. By default it's ':' and caption looks like "Algorithm 2: title" but now
% you can change it by using for example \SetAlgoCaptionSeparator{.} which will
% give "Algorithm 3. title"
% * ADD: - \SetAlgoLongEnd and \SetAlgoShortEnd and \SetAlgoNoEnd commands which act as
% corresponding package options
% * ADD: - OPTIONS italiano and slovak as new language (thanks to Roberto Posenato and
% Miroslav Binas)
% * CHANGE: - Fnt and Sty macro to have consistent use and naming (see below)
% * ADD: - \AlCapSty, \AlCapNameSty, \AlCapFnt, \AlCapNameFnt, \ProcSty, \ProcFnt,
% \ProcNameSty, \ProcNameFnt, \ProcArgSty, ProcArgFnt and corresponding "set macro"
% \SetAlCapSty, \SetAlCapNameSty, \SetAlCapFnt, \SetAlCapNameFnt, \SetProcSty,
% \SetProcFnt, \SetProcNameSty, \SetProcNameFnt, \SetProcArgSty, \SetProcArgFnt which
% control the way caption is printed. Sty macro use command taking one parameter as
% argument, Fnt macros use directly command. In Fact caption is printed as follow :
% \AlCapSty{\AlCapFnt Algorithm 1:}\AlCapNameSty{\AlCapNameFnt my algorithm}
% By default, \AlCapSty is textbf and \AlCapFnt is nothing. \AlCapNameSty keep text
% as it is, and \AlCapNameFnt do nothing also.
% You can redefine \AlCapFnt and \AlCapNameFnt by giving macro to \Set commands. For
% example, you can do \SetAlCapFnt{\large} to see Algorithm printed in \large font.
% You can redefine \AlCapSty, \AlCapFnt, \AlCapNameSty and \AlCapNameFnt with the
% corresponding \Set command. For the Sty commands, you have to give in parameter
% name of a macro (whithout \) which takes one argument. For example,
% \SetAlCapFnt{textbf} defines the default behaviour. If you want to do more
% complicated thing, you should define your own macro and give it to \SetAlCapFnt or
% \SetAlCapNameFnt. Here are two examples:
% - \newcommand{\mycapsty}[1]{\tiny #1}\SetAlCapNameSty{mycapsty}
% - \newcommand{\mycapsty}[1]{\textsl{\small #1}}\SetAlCapNameSty{mycapsty}
% Or you can combine the two, for the last example you can also do:
% \SetAlCapNameSty{textsl}\SetAlCapNameFnt{\small}
% Thanks to Jan Stilhammer who gives me the idea of \AlCapNameFnt.
% * CHANGE \AlTitleFnt to match definition of all other Fnt macros and add a \AlTitleSty
% macro (see below) . Now you set \AlTitleFnt by calling \SetAlTitleFnt with
% directly a macro without parameter in argument:
% Example: \SetAlTitleFnt{\small} to set title in small font.
% * ADD: - \AlTitleSty and \SetAlTitleSty commands to set a style for title. These commands
% are defined from a macro taking the text in argument, as \textbf for example.
% To set the TitleSty you have to give name of the macro (without the '\')
% to \SetAlTitleSty. For example \SetAlTitleSty{textbf} to set \textbf style.
% * ADD: - new command \SetAlgorithmName{algorithmname}{list of algorithms name} which
% redefines name of the algorithms and the sentence list of algorithms. Second
% argument is the name that \autoref, from hyperref package, will use. Example:
% \SetAlgorithmName{Protocol}{List of protocols} if you prefer protocol than
% algorithm.
% * ADD: - new \SetAlgoRefName{QXY} which change the default ref (number of the algorithm) by
% the name given in parameter (QXY in the example).
% * ADD: - new command \SetAlgoRefRelativeSize{-2} which sets the output size of refs, defined
% by \SetAlgoRefName, used in list of algorithms.
% * ADD: - two dimensions to control the layout of caption in ruled, algoruled and boxruled
% algorithms:
% - interspacetitleruled (2pt by defaut) which controls the vertical space between
% rules and title in ruled and algoruled algorithms.
% - interspaceboxruled (2\lineskip by default) which controls the vertical space
% between rules and title in boxruled algorithms.
% These two dimensions can be changed by using \setlength command.
% * ADD: - With the fix (see below) of procedure and function environments, a new feature has
% been added: the name of the procedure or function set in caption is automatically
% defined as a KwFunction and so can be used as a macro. For example, if inside a
% procedure environment you set \caption{myproc()}, you can use \myproc macro in you
% main text. Beware that the macro is only defined after the \caption!
% * ADD: - OPTION nokwfunc to unable the new feature described above in function and
% procedure environment. Useful if you use name of procedure or function that cannot
% be a command name as a math display for example.
% * ADD: - \SetAlgoNlRelativeSize{number} command which sets the relative size of line
% numbers. By default, line numbers are two size smaller than algorithm text. Use
% this macro to change this behavior. For example, \SetAlgoNlRelativeSize{0} sets it
% to the same size, \SetAlgoNlRelativeSize{-1} to one size smaller and
% \SetAlgoNlRelativeSize{1} to one size bigger
% * ADD: - \SetAlgoProcName{aname} command which sets the name of Procedure printed by
% procedure environment (the environment prints Procedure by default). Second
% argument is the name that \autoref, from hyperref package, will use.
% * ADD: - \SetAlgoFuncName{aname} command which sets the name of Function printed by
% procedure environment (the environment prints Function by default). Second
% argument is the name that \autoref, from hyperref package, will use.
% * ADD: - \SetAlgoCaptionLayout{style} command which sets style of the caption; style must
% be the name of a macro taking one argument (the text of the caption). Examples
% below show how to use it:
% . \SetAlgoCaptionLayout{centerline} to have centered caption
% . \SetAlgoCaptionLayout{textbf} to have bold caption
% If you want to apply two styles in the same time, such as centered bold, you have
% to define you own macro and then use \SetAlgoCaptionLayout with its name.
% * ADD: - OPTION procnumbered: which makes the procedure and function to be numbered as
% algorithm
% * ADD: - OPTIONS tworuled and boxruled
% these are two new layouts: tworuled acts like ruled but doesn't put a line after
% caption ; boxruled surround algorithm by a box, puts caption above and add a line
% after caption.
% * REMOVE: - SetKwInParam has been deleted since not useful itself because of different
% macros which can do the same in a better and a more consistent way as
% SetKwFunction or SetKw.
% * FIX: - line number is now correctly vertically aligned with math display.
% * FIX: - references with hyperref. No more same identifier or missing name error. BUT now
% you must NOT use naturalnames option of hyperref packages if you do PdfLaTeX
% * FIX: - autoref with hyperref package (thanks to Jörg Sommer who notices the problem).
% * FIX: - titlenumbered was not working! fixed.
% * FIX: - Else(){} acted like uElse. Corrected.
% * FIX: - noend management: when a block was inside another and end of block was following
% each other, a blank line was added: it's now corrected.
% * FIX: - Function and Procedure environment was no more working as defined originally: the
% label was no more name of the procedure, it acts always as if procumbered option
% has been used.
% * FIX: - line numbers had a fixed size which can be bigger than algorithm text accordingly
% to \AlFnt set (see also new command \SetAlgoNlRelativeSize above)
% * FIX: - semicolon in comments when dontprintsemicolon is used.
% * FIX: - listofalgorithms adds a vertical space before first algo of a chapter as for
% listoffigures or listoftables
% * FIX: - listofalgorithms with twocolumns mode and some classes which don't allow onecolumn
% and so don't define \if@restonecol as prescribed in LaTeX (sig-alternate for
% example)
% * FIX: - algorithm2e now works with elsart cls and some more classes.
% * FIX: - blocks defined by SetKwBlock act now as other blocks (if for instance) and don't
% write end in vlined mode, instead they print a small horizontal line as required
% by the option.
% * FIX: - underfull hbox warning at each end of algorithm environment removed.
%
% * INTERNAL CHANGE: - short end keyword are deduce from long end keyword by keeping the
% first one. Allows to avoid double definition.
% * INTERNAL CHANGE: - procedure, function and algorithm are now resolved by the same
% environment to avoid code duplication.
%
% - October 04 2005 - revision 3.9 -
% * ADD: - \setalcaphskip command which sets the horizontal skip before Algorithm: in caption
% when used in ruled algorithm.
% * ADD: - \SetAlgoInsideSkip command which allows to add an extra vertical space before and
% after the core of the algorithm (ie: \SetAlgoInsideSkip{bigskip})
% * CHANGE: - caption, when used with figure option, is no more controlled by algorithm2e
% package and so follows the exact behaviour of figures. The drawback is that you
% cannot change the typo with AlTitleFnt or CapFnt. The avantage is that if you
% use caption package, it works.
% * FIX: - problem with numbering line and pdflatex
% * FIX: - error when algorithm2e package was used with beamer and listings together
% - February 12 2005 - revision 3.8 -
% * FIX: - extra line with noend option.
% - February 10 2005 - revision 3.7 -
% * ADD: - sidecomment: different macros allowing to put text right after code on the same
% line. They are defined in the same time comment macros are defined with a star
% after the macro name. By default comments are right justified but this can be
% change with appropriate option in the macro. Ex:
% . default: \tcc*{side comment}
% . same as previous: \tcc*[r]{side comment}
% . left justify: \tcc*[l]{side comment}
% . here: \tcc*[h]{side comment} don't put the end of line mark before
% comment (; by default) and don't end the line.
% . flushed: \tcc*[f]{side comment} same as the precedent but right
% justified
% * ADD: - OPTION scright (default): right justified side comments (side comments
% are flushed to the righr)
% * ADD: - OPTION scleft: left justified side comments (side comments are put right after the
% code line)
% * ADD: - \SetSideCommentLeft acts as scleft option
% * ADD: - \SetSideCommentRight acts as scright option
% * ADD: - block like macro side text: all macro defining a block allows now to put text right
% after key words by putting text into (). Done to be used with sidecomment macros,
% but all text can be used.
% Ex: \eIf(\tcc*[f]{then comment}){test}{then text}(else side text){else text}
% * ADD: - OPTION fillcomment (default): end mark of comment is flushed to the right so
% comments fill all the width of text.
% * ADD: - OPTION nofillcomment: end mark of comment is put right after the comment.
% * ADD: - \SetNoFillComment acts as nofillcomment option.
% * ADD: - \SetFillComment acts as fillcomment option.
% * ADD: - OPTION dotocloa: which adds an entry in the toc for the list of algorithms. This
% option load package tocbibind if not already done and so list of figures and list
% of tables are also added in the toc. If you want to control which ones of the lists
% will be added in the toc, please load package tocbibind before package algorithm
% and give it the options you want.
% * FIX: - vertical spacing for uif macro with noend option
% * FIX: - all the compatibility problems between caption and other packages
% * FIX: - typographical differences between list of algorithms and other lists when in
% report or book
%
% - January 24 2005 - revision 3.6 -
% * FIX: - vertical spacing and space characters at the beginning or end of comments.
% line numbers of comments not in the NlSty.
% Thanks to Arnaud Giersch for his comments and suggestions.
% * FIX: - Set*Sty macro: the styles defined was not protected and was modified by surrounding
% context. For example KwTo in a \For{}{} was in bold AND italic instead of just in
% bold.
% * FIX: - line number misplacement after \Indp
%
% - January 21 2005 - revision 3.5 -
% * ADD: - hidden numbering of the lines. Lines are auto-numbered but numbers are shown only
% on lines you specify:
% * linesnumberedhidden option or \LinesNumberedHidden macro activate this
% functionnality.
% * \ShowLn and \ShowLnLabel{lab} macros make the number visible on the
% line. \ShowLnLabel{lab} allows to set a label for this line.
% Thanks to Samson de Jager who makes this suggestion and provides the macros.
% * ADD: - \AlCapFnt and \SetAlCapFnt which allow to have a different font for
% caption. Works like \AlFnt and \SetAlFnt and by default is the same.
% * ADD: - \AlCapSkip skip length. This vertical space is added before caption in plain ou
% boxed mode. It allows to change distance between text and caption.
% * FIX: - caption compatible with IEEEtran class.
% * FIX: - some vertical spacing error with \uIf macros (Thanks to Arnaud Giersch)
% * FIX: - Procedure and Function: lines are also numbered like algorithms
% * FIX: - CommentSty was not used for Comments
%
% - January 10 2005 - revision 3.4 -
% * FIX: - caption compatible with new release of Beamer class.
%
% - June 16 2004 - revision 3.3 -
% * FIX: - Hyperlink references of Hyperref package works now if compiled with pdflatex
% and [naturalnames] option of hyperref package is used.
% * FIX: - algorithm[H] had problem in an list environment - corrected
% * FIX: - interline was not so regular in nested blocks - corrected
% * ADD - \SetVlineSkip macro which sets the vertical skip after the little horizontal
% rule which closes a block in Vlined mode. By default 0.8ex
%
% - June 11 2004 - revision 3.2 - AUTO NUMBERING LINES !!!
% * ADD: auto numbering of the lines (the so asked and so long awaiting feature)
% this feature is managed by 3 options and 3 commands:
% - linesnumbered option: lines of the algo are numbered except for comments and
% input/output (KwInput and KwInOut)
% - commentsnumbered option: makes comments be numbered
% - inoutnumbered option: makes data input/output be numbered
% - \nllabel{lab} labels the line so you can cite with \ref{lab}
% - \LinesNumbered make the following algorithms having auto-numbered lines
% - \linesnotnumbered make the following algorithms having no auto-numbered lines
% * Change: algo2e option renames listofalgorithms in listofalgorithmes
% * FIX: new solution for compatibility with color package, more robust and not tricky.
% Many thanks to David Carlisle for his advices
%
% - June 09 2004 - revision 3.1 -
% * Change: \SetKwSwitch command defines an additionnal macro \uCase and \Case prints end
% * Change: now macros SetKw* do a renewcommand if the keyword is already defined. So you can
% redefine default definition at your own convenience or change your definition
% without introducing a new macro and changing your text.
% * ADD: new macro \SetKwIF which do \SetKwIf and
% \SetKwIfElseIf.The following default definition has been added:
% \SetKwIF{If}{ElseIf}{Else}{if}{then}{else if}{else}{endif}
% and so you get the macros;
% \If \eIf \lIf \uIf \ElseIf \uElseIf \lElseIf \Else \uElse \lElse
% * ADD: new macro \SetAlgoSkip which allow to fix the vertical skip before and after the
% algorithms. Default is smallskip, do \SetAlgoSkip{} if you don't want an extra space
% or \SetAlgoSkip{medskip} or \SetAlgoSkip{bigskip} if you want bigger space.
% * ADD: macro \SetKwIf defines in addition a new macro \uElse (depending on wat name you
% have given in #2 arg).
% * ADD: macro \SetKwIfElseIf defines in addition a new macro \uElse and \ugElseIf (depending
% on what name you have given in #2 and #3 arg).
% * Change: baseline of algorithm is now top, so two algorithms can be put side by side.
% * FIX: Compatibility with color package solved. The problem was due to a redefinition of
% standard macros by color package. This solves compatibility problem with other
% packages as pstcol or colortbl. (notified by Dirk Fressmann, Antti Tarvainen and Koby
% Crammer)
% * Fix: extra little shift to the right with boxed style algorithm removed (notified by
% P. Tanovski)
% * Fix: algoln option was buggy (notified bye Jiaying Shen)
% * Fix: german and portuges option didn't work due to bad typo (notified by Martin Sievers,
% Thorsten Vitt and Jeronimo Pellegrini)
%
% - February 13 2004 - revision 3.0 -
% * Major revision which makes the package independent from float.sty, so now
% - algorithm* works better, in particular can be used in multicols environments
% - (known bug corrected)
% [H] works now for all sort of environment but is handled differently for classic
% environment and star environment (algorithm, figure, procedure and function). For star
% environment, H acts like for classical figure environment, so it doesn't stay here
% absolutely.
% - (known bug corrected)
% you can use now floatflt package with algorithm package and even with figure
% option. Beware that if you want to put an algorithm inside a floatingfigure, it cannot
% be floating, so [H] is required and then figure option should not be used, since
% standard figure[H] are still floating with LaTeX.
% * boxruled: a new style added. Possible now since no style no more defined by the float
% package.
% * nocaptionofalgo: dosen't print Algorithm #: in the caption for algorithm in ruled or
% algoruled style.
% note: this is just documentation of a macro which was already in the package.
% - December 14 2003 - revision 2.52 -
% * output message shorter
% * french keyword macro \PourTous was missing for longend option, it has been added.
% * TitleofAlgo prints Function or Procedure in corresponding environments.
%
% - October 27 2003 - revision 2.51 - Revision submitted to CTAN archive
% * correction of a minor which make caption in procedure
% and function to be blanck with pdfscreen package
% (thanks to Joel Gossens for the notification)
% * add two internal definition to avoid some errors when
% used with Hyperref package (Hyperref package need to
% define new counter macro from existing ones, and
% don't do it for algorithm2e package, so we do it)
%
% - October 17 2003 - revision 2.50 - first revision for CTAN archive
% * add \AlFnt and \SetAlFnt{font} macros: \AlFnt is used at the beginning of the caption and
% the body of algorithm in order to define the fonts used for typesetting algorithms. You
% can use it elsewhere you want to typeset text as algorithm. For example you can do
% \SetAlFnt{\small\sf} to have algorithms typeset in small sf font. Default is nothing so
% algorithm is typeset as the text of the document.
% * add \AlTitleFnt{text} and \SetAlTitleFnt{font} macros: The {Algorithm: } in the caption is
% typeset with \AlTitleFnt{Algorithm:}. You can use it to have text typeset as {Algorithm:}
% of captions. Default is textbf. Default can be redefined by \SetAlTitleFnt{font}, for
% example you can do \SetAlTitleFnt{emph}
% * add CommentSty typo for text comment.
% * add some compatibility with hyperref package (still an error on multiply defined refs but
% pdf correctly generated)
% * flush text to left in order to have correct indentation even with class as amsart which
% center all figures
% * add german, portugues and czech options for title of algorithms and typo.
% * add portuguese translation of predefined keywords * add czech translation of some
% predefined keywords
%
% - December 23 2002 - revision 2.40
% * add some french keyword missing
% * add function* and procedure* environment like algorithme* environment: print in one column
% even if twocolumn option is specified for the document.
% * add a new macro \SetKwComment to define macro which writes comments in the text. First
% argument is the name of the macro, second is the text put before the comment, third is the
% text put at the end of the comment.Default are \tcc and \tcp
% * add new options to change the way algo are numbered:
% [algopart] algo are numbered within part (counter must exist)
% [algochapter] algo are numbered within chapter
% [algosection] algo are numbered within section
%
% - March 27 2002 - revision 2.39
% * Gilles Geeraerts: added the \SetKwIfElseIf to manage
% if (c)
% i;
% else if (c)
% i;
% ...
% else
% i;
% end
% * Also added \gIf \gElseIf \gElse.
%
% - January 02 2001 - revision 2.38
% * bugs related to the caption in procedure and function
% environment are corrected.
% * bug related to option noend (extra vertical space added
% after block command as If or For) is corrected.
% * czech option language added (thanks to Libor Bus: l.bus@sh.cvut.cz).
%
% - October 16 2000 - revision 2.37
% * option algo2e added: change the name of environment
% algorithm into algorithm2e. So allow to use the package
% with some journal style which already define an algorithm
% environment.
%
% - September 13 2000 - revision 2.36
% * option slide added: require package color
% * Hack for slide class in order to have correct
% margins
%
% - November 25 1999 - revision 2.35
% * revision number match RCS number
% * Thanks to David A. Bader, a new option is added:
% noend: no end keywords are printed.
%
% - November 19 1999 - revision 2.32
% * minor bug on longend option corrected.
%
% - August 26 1999 - revision 2.31
% * add an option : figure
% this option makes algorithms be figure and so are numbered
% as figures, have Figure as caption and are put in
% the \listoffigures
%
% - January 21 1999 - revision 2.3 beta
% add 2 new environments: procedure and function.
% These environments works like algorithm environment but:
% - the ruled (or algoruled) style is imperative.
% - the caption now writes Procedure name....
% - the syntax of the \caption command is restricted as
% follow: you MUST put a name followed by 2 braces like
% this ``()''. You can put arguments inside the braces and
% text after. If no argument is given, the braces will be
% removed in the title.
% - label now puts the name (the text before the braces in the
% caption) of the procedure or function as reference (not
% the number like a classic algorithm environment).
% There are also two new styles : ProcNameSty and
% ProcArgSty. These style are by default the same as FuncSty
% and ArgSty but are used in the caption of a procedure or a
% function.
%
% - November 28 1996 - revision 2.22
% add a new macro \SetKwInParam{arg1}{arg2}{arg3}:
% it defines a macro \arg1{name}{arg} which prints name in keyword
% style followed byt arg surrounded by arg2 and arg3. The main
% application is to a function working as \SetKwInput to be used
% in the head of the algorithm. For example
% \SetKwInParam{Func}{(}{)} allows
% \Func{functionname}{list of arguments} which prints:
% \KwSty{functioname(}list of arguments\KwSty{)}
%
%
% - November 27 1996 - revision 2.21 :
% minor bug in length of InOut boxes fixed.
% add algorithm* environment.
%
% - July 12 1996 - revision 2.2 : \SetArg and \SetKwArg macros removed.
%
% \SetArg has been removed since it never has been
% documented.
% \SetKwArg has been removed since \SetKw can now
% take an argument in order to be consistent with
% \SetKwData and \SetKwFunction macros.
%
% - July 04 1996 - revision 2.1 : still more LaTeX2e! Minor compatibility break
%
% Macros use now \newcommand instead of \def, use of \setlength,
% \newsavebox, ... and other LaTeX2e specific stuff.
% The compatibility break:
% - \SetData becomes \SetKwData to be more consistent. So the old
% \SetKwData becomes \SetKwInput
% - old macros \titleofalgo, \Freetitleofalgo and \freetitleofalgo
% from LaTeX209 version which did print a warning message and call
% \Titleofalgo in version 2.0 are now removed!
%
% - March 13 1996 - revision 2.0: first official major revision.
%
%
%%%%%%%%%%%%%%
%
% Known bugs:
% -----------
% - no more known bugs... all are corrected!
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% for more complete informations you can see algorithm2e.tex
%
%
%%%%%%%%%%%%%%%%%%%%%%%% Identification Part %%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\NeedsTeXFormat{LaTeX2e}[1994/12/01]
%
\ProvidesPackage{algorithm2e}[2008/00/00 v3.10 algorithms environments]
%
%
%%%%%%%%%%%%%%%%%%%%%%%%%%% Initial Code %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\@makeother\*% some package redefined it as a letter (as color.sty)
\def\@firstword#1 #2\@nil{#1}% an useful fonction
%
% definition of commands which can be redefined in options of the package.
%
\newcounter{AlgoLine}%
\setcounter{AlgoLine}{0}%
%
\newcommand{\algocf@algocfref}{\relax}%
\newcommand{\listalgorithmcfname}{}%
\newcommand{\algorithmcfname}{}%
\@ifundefined{algorithmautorefname}{\newcommand{\algorithmautorefname}{algorithm}}{\renewcommand{\algorithmautorefname}{algorithm}}%
\newcommand{\algorithmcflinename}{}%
\newcommand{\algocf@typo}{}%
\newcommand{\@algocf@procname}{}\newcommand{\procedureautorefname}{}%
\newcommand{\SetAlgoProcName}[2]{\renewcommand{\@algocf@procname}{#1}\renewcommand{\procedureautorefname}{#2}}%
\newcommand{\@algocf@funcname}{}\newcommand{\functionautorefname}{}%
\newcommand{\SetAlgoFuncName}[2]{\renewcommand{\@algocf@funcname}{#1}\renewcommand{\functionautorefname}{#2}}%
\newcommand{\@algocf@titleofalgoname}{\algorithmcfname}%
\newcommand{\@algocf@algotitleofalgo}{%
\renewcommand{\@algocf@titleofalgoname}{\algorithmcfname}}%
\newcommand{\@algocf@proctitleofalgo}{%
\renewcommand{\@algocf@titleofalgoname}{\algocf@procname}}%
%
\newcommand{\algocf@style}{plain}%
\newcommand{\@ResetCounterIfNeeded}{}%
\newcommand{\@titleprefix}{}%
%
\newcommand{\algocf@numbering}[1]{\newcommand{\algocf@within}{#1}}%
%
\newcommand{\defaultsmacros@algo}{\algocf@defaults@shortend}%
%
\newcommand{\algocf@list}{loa}%
\newcommand{\algocf@float}{algocf}%
%
\newcommand{\algocf@envname}{algorithm}%
\newcommand{\algocf@listofalgorithms}{listofalgorithms}%
%
%
%% redefine chapter so that it adds a vspace in the loa as the original does for lof and lot
\let\algocf@original@chapter=\chapter%
\def\chapter{\expandafter\addtocontents{loa}{\protect\addvspace{10\p@}}\algocf@original@chapter}%
%
%% if@restonecol is defined in article and book but some other classes don't define it and we need it, so we do
\ifx\if@restonecol\relax\else\newif\if@restonecol\fi%
%
%
%%%%%%%%%%%%%%%%%%%%%% Declaration of Options %%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\RequirePackage{ifthen}%
%
\newboolean{algocf@nokwfunc}\setboolean{algocf@nokwfunc}{false}%
\DeclareOption{nokwfunc}{%
\setboolean{algocf@nokwfunc}{true}%
}%
%
\newboolean{algocf@oldcommands}\setboolean{algocf@oldcommands}{false}%
\DeclareOption{oldcommands}{%
\setboolean{algocf@oldcommands}{true}%
}%
%
\newboolean{algocf@leftlinenumber}\setboolean{algocf@leftlinenumber}{true}%
\newcommand{\setLeftLinesNumbers}{\setboolean{algocf@leftlinenumber}{true}}%
\newcommand{\setRightLinesNumbers}{\setboolean{algocf@leftlinenumber}{false}}%
\DeclareOption{rightnl}{%
\setRightLinesNumbers%
}%
%
\newboolean{algocf@endfloat}\setboolean{algocf@endfloat}{false}%
\DeclareOption{endfloat}{%
\setboolean{algocf@endfloat}{true}%
\newcounter{postalgo}\setcounter{postalgo}{0}%
}%
%
\newboolean{algocf@procnumbered}\setboolean{algocf@procnumbered}{false}%
\DeclareOption{procnumbered}{%
\setboolean{algocf@procnumbered}{true}%
}%
%
\DeclareOption{algo2e}{%
\renewcommand{\algocf@envname}{algorithm2e}%
\renewcommand{\algocf@listofalgorithms}{listofalgorithmes}%
}%
%
\newboolean{algocf@slide}\setboolean{algocf@slide}{false}%
\DeclareOption{slide}{%
\setboolean{algocf@slide}{true}%
}%
%
\DeclareOption{figure}{%
\renewcommand{\algocf@list}{lof}%
\renewcommand{\algocf@float}{figure}%
}%
%
\newboolean{algocf@optonelanguage}\setboolean{algocf@optonelanguage}{false}%
\DeclareOption{onelanguage}{\setboolean{algocf@optonelanguage}{true}}%
%
\newcommand{\algocf@languagechoosen}{english}%
%
\DeclareOption{spanish}{%
\renewcommand{\listalgorithmcfname}{Lista de Algoritmos}%
\renewcommand{\algorithmcfname}{Algoritmo}%
\renewcommand{\algorithmautorefname}{algorithm}%
\renewcommand{\algorithmcflinename}{line}%
\renewcommand{\algocf@typo}{}%
\renewcommand{\@algocf@procname}{Procedure}%
\renewcommand{\@algocf@funcname}{Function}%
\renewcommand{\procedureautorefname}{procedure}%
\renewcommand{\functionautorefname}{function}%
\renewcommand{\algocf@languagechoosen}{spanish}%
}
\DeclareOption{english}{%
\renewcommand{\listalgorithmcfname}{List of Algorithms}%
\renewcommand{\algorithmcfname}{Algorithm}%
\renewcommand{\algorithmautorefname}{algorithm}%
\renewcommand{\algorithmcflinename}{line}%
\renewcommand{\algocf@typo}{}%
\renewcommand{\@algocf@procname}{Procedure}%
\renewcommand{\@algocf@funcname}{Function}%
\renewcommand{\procedureautorefname}{procedure}%
\renewcommand{\functionautorefname}{function}%
\renewcommand{\algocf@languagechoosen}{english}%
}%
%
\DeclareOption{french}{%
\renewcommand{\listalgorithmcfname}{Liste des Algorithmes}%
\renewcommand{\algorithmcfname}{Algorithme}%
\renewcommand{\algorithmautorefname}{algorithme}%
\renewcommand{\algorithmcflinename}{ligne}%
\renewcommand{\algocf@typo}{\ }%
\renewcommand{\@algocf@procname}{Procédure}%
\renewcommand{\@algocf@funcname}{Fonction}%
\renewcommand{\procedureautorefname}{procédure}%
\renewcommand{\functionautorefname}{fonction}%
\renewcommand{\algocf@languagechoosen}{french}%
}%
%
\DeclareOption{czech}{%
\renewcommand{\listalgorithmcfname}{Seznam algoritm\v{u}}%
\renewcommand{\algorithmcfname}{Algoritmus}%
\renewcommand{\algorithmautorefname}{\algorithmcfname}%
\renewcommand{\algorithmcflinename}{Radek}%
\renewcommand{\algocf@typo}{}%
\renewcommand{\@algocf@procname}{Procedura}%
\renewcommand{\@algocf@funcname}{Funkce}%
\renewcommand{\procedureautorefname}{\@algocf@procname}%
\renewcommand{\functionautorefname}{\@algocf@funcname}%
\renewcommand{\algocf@languagechoosen}{czech}%
}%
%
\DeclareOption{german}{%
\renewcommand{\listalgorithmcfname}{Liste der Algorithmen}%
\renewcommand{\algorithmcfname}{Algorithmus}%
\renewcommand{\algorithmautorefname}{\algorithmcfname}%
\renewcommand{\algorithmcflinename}{Zeile}%
\renewcommand{\algocf@typo}{\ }%
\renewcommand{\@algocf@procname}{Prozedur}%
\renewcommand{\@algocf@funcname}{Funktion}%
\renewcommand{\procedureautorefname}{\@algocf@procname}%
\renewcommand{\functionautorefname}{\@algocf@funcname}%
\renewcommand{\algocf@languagechoosen}{german}%
}%
%
\DeclareOption{portuguese}{%
\renewcommand{\listalgorithmcfname}{Lista de Algoritmos}%
\renewcommand{\algorithmcfname}{Algoritmo}%
\renewcommand{\algorithmautorefname}{algoritmo}%
\renewcommand{\algorithmcflinename}{linha}%
\renewcommand{\algocf@typo}{}%
\renewcommand{\@algocf@procname}{Procedimento}%
\renewcommand{\@algocf@funcname}{Fun\c{c}\~{a}o}%
\renewcommand{\procedureautorefname}{procedimento}%
\renewcommand{\functionautorefname}{fun\c{c}\~{a}o}%
\renewcommand{\algocf@languagechoosen}{portuguese}%
}%
%
\DeclareOption{italiano}{%
\renewcommand{\listalgorithmcfname}{Elenco degli algoritmi}%
\renewcommand{\algorithmcfname}{Algoritmo}%
\renewcommand{\algorithmautorefname}{algoritmo}%
\renewcommand{\algorithmcflinename}{riga}%
\renewcommand{\algocf@typo}{}%
\renewcommand{\@algocf@procname}{Procedura}%
\renewcommand{\@algocf@funcname}{Funzione}%
\renewcommand{\procedureautorefname}{procedura}%
\renewcommand{\functionautorefname}{funzione}%
\renewcommand{\algocf@languagechoosen}{italiano}%
}%
\DeclareOption{slovak}{%
\renewcommand{\listalgorithmcfname}{Zoznam algoritmov}%
\renewcommand{\algorithmcfname}{Algoritmus}%
\renewcommand{\algorithmautorefname}{\algorithmcfname}%
\renewcommand{\algorithmcflinename}{Radek}%
\renewcommand{\algocf@typo}{}%
\renewcommand{\@algocf@procname}{Proced\'{u}ra}%
\renewcommand{\@algocf@funcname}{Funkcia}%
\renewcommand{\procedureautorefname}{\@algocf@procname}%
\renewcommand{\functionautorefname}{\@algocf@funcname}%
\renewcommand{\algocf@languagechoosen}{slovak}%
}%
%
% OPTIONs plain, boxed, ruled, algoruled & boxruled
%
\newcommand{\algocf@style@plain}{\renewcommand{\algocf@style}{plain}}%
\newcommand{\algocf@style@boxed}{\renewcommand{\algocf@style}{boxed}}%
\newcommand{\algocf@style@ruled}{\renewcommand{\algocf@style}{ruled}}%
\newcommand{\algocf@style@algoruled}{\renewcommand{\algocf@style}{algoruled}}%
\newcommand{\algocf@style@boxruled}{\renewcommand{\algocf@style}{boxruled}}%
\newcommand{\algocf@style@tworuled}{\renewcommand{\algocf@style}{tworuled}}%
\newcommand{\RestyleAlgo}[1]{\csname algocf@style@#1\endcsname}%
\DeclareOption{plain}{\algocf@style@plain}%
\DeclareOption{boxed}{\algocf@style@boxed}%
\DeclareOption{ruled}{\algocf@style@ruled}%
\DeclareOption{algoruled}{\algocf@style@algoruled}%
\DeclareOption{boxruled}{\algocf@style@boxruled}%
\DeclareOption{tworuled}{\algocf@style@tworuled}%
%
% OPTIONs algopart,algochapter & algosection
%
\DeclareOption{algopart}{\algocf@numbering{part}}% %algo part numbered
\DeclareOption{algochapter}{\algocf@numbering{chapter}}% %algo chapter numbered
\DeclareOption{algosection}{\algocf@numbering{section}}% %algo section numbered
%
% OPTIONs resetcount & noresetcount
%
\DeclareOption{resetcount}{\renewcommand{\@ResetCounterIfNeeded}{\setcounter{AlgoLine}{0}}}%
\DeclareOption{noresetcount}{\renewcommand{\@ResetCounterIfNeeded}{}}%
%
% OPTION linesnumbered
%
\newboolean{algocf@linesnumbered}\setboolean{algocf@linesnumbered}{false}%
\newcommand{\algocf@linesnumbered}{\relax}%
\DeclareOption{linesnumbered}{%
\setboolean{algocf@linesnumbered}{true}%
\renewcommand{\algocf@linesnumbered}{\everypar={\nl}}%
}%
%
% OPTION linesnumberedhidden
%
\DeclareOption{linesnumberedhidden}{%
\setboolean{algocf@linesnumbered}{true}%
\renewcommand{\algocf@linesnumbered}{\everypar{\stepcounter{AlgoLine}}}%
}%
%
% OPTION commentsnumbered inoutnumbered
%
\newboolean{algocf@commentsnumbered}\setboolean{algocf@commentsnumbered}{false}%
\DeclareOption{commentsnumbered}{\setboolean{algocf@commentsnumbered}{true}}%
\newboolean{algocf@inoutnumbered}\setboolean{algocf@inoutnumbered}{false}%
\DeclareOption{inoutnumbered}{\setboolean{algocf@inoutnumbered}{true}}%
%
% OPTIONs titlenumbered & titlenotnumbered
%
\DeclareOption{titlenumbered}{%
\renewcommand{\@titleprefix}{%
\refstepcounter{\algocf@float}%
\AlTitleSty{\AlTitleFnt\@algocf@titleofalgoname\ \expandafter\csname the\algocf@float\endcsname\algocf@typo: }%
}%
}%
%
\DeclareOption{titlenotnumbered}{\renewcommand{\@titleprefix}{%
\AlTitleSty{\AlTitleFnt\@algocf@titleofalgoname\algocf@typo: }}%
}%
%
% OPTIONs algonl
% line numbered with the counter of the algorithm
%
\DeclareOption{algonl}{\renewcommand{\theAlgoLine}{\expandafter\csname the\algocf@float\endcsname.\arabic{AlgoLine}}}%
%
% OPTIONs lined, vlined & noline
%
\DeclareOption{lined}{\AtBeginDocument{\SetAlgoLined}}% \SetAlgoLined
\DeclareOption{vlined}{\AtBeginDocument{\SetAlgoVlined}}% \SetAlgoVlined
\DeclareOption{noline}{\AtBeginDocument{\SetAlgoNoLine}}%\SetAlgoNoLine (default)
%
% OPTIONs longend, shotend & noend
%
\DeclareOption{longend}{\AtBeginDocument{\SetAlgoLongEnd}}% \SetAlgoLongEnd
\DeclareOption{shortend}{\AtBeginDocument{\SetAlgoShortEnd}}%\SetAlgoShortEnd
\DeclareOption{noend}{\AtBeginDocument{\SetAlgoNoEnd}}% \SetAlgoNoEnd
%
% OPTION dotoc
%
\newboolean{algocf@dotocloa}\setboolean{algocf@dotocloa}{false}%
\DeclareOption{dotocloa}{%
\setboolean{algocf@dotocloa}{true}%
}
%
% OPTION comments
%
\newboolean{algocf@optfillcomment}\setboolean{algocf@optfillcomment}{true}%
\DeclareOption{nofillcomment}{%
\setboolean{algocf@optfillcomment}{false}%
}%
\DeclareOption{fillcomment}{%
\setboolean{algocf@optfillcomment}{true}%
}%
%
% OPTION sidecommments
%
\newboolean{algocf@scleft}\setboolean{algocf@scleft}{false}%
\DeclareOption{scleft}{%
\setboolean{algocf@scleft}{true}%
}%
\DeclareOption{sright}{% default
\setboolean{algocf@scleft}{false}%
}%
%
% OPTION norelsize
%
\newboolean{algocf@norelsize}\setboolean{algocf@norelsize}{false}%
\DeclareOption{norelsize}{%
\setboolean{algocf@norelsize}{true}%
}%
%
%
%%%%%%%%%%%%%%%%%%%%%%% Execution of Options %%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\ExecuteOptions{english,plain,resetcount,titlenotnumbered,lined,shortend}%
%
\ProcessOptions%
%
\@algocf@algotitleofalgo% fix name for \TitleOfAlgo to \algorithmcfname by default
%
%%%%%%%%%%%%%%%%%%%%%%%%%% Package Loading %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
\RequirePackage{xspace}%
%
\ifthenelse{\boolean{algocf@endfloat}}{%
\RequirePackage{endfloat}%
}{\relax}%
%
\ifthenelse{\boolean{algocf@norelsize}}{%
\newcommand{\relsize}[1]{\scriptsize}%
}{%
\RequirePackage{relsize}%
}%
%
\ifthenelse{\boolean{algocf@slide}}{\RequirePackage{color}}{}%