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authorKarl Berry <karl@freefriends.org>2006-01-11 23:52:17 +0000
committerKarl Berry <karl@freefriends.org>2006-01-11 23:52:17 +0000
commita960cca89bd1f229a66abc1203bea35c288d636d (patch)
treec282f51119486b87e69519f4b93974070f111e3e /Master/texmf-dist/source/latex/decimal
parent82bb2082acf3aef575a2282eb3ae24567cd9c370 (diff)
trunk/Master/texmf-dist/source/latex/decimal
git-svn-id: svn://tug.org/texlive/trunk@221 c570f23f-e606-0410-a88d-b1316a301751
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-rw-r--r--Master/texmf-dist/source/latex/decimal/decimal.dtx227
-rw-r--r--Master/texmf-dist/source/latex/decimal/decimal.ins52
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diff --git a/Master/texmf-dist/source/latex/decimal/decimal.dtx b/Master/texmf-dist/source/latex/decimal/decimal.dtx
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+%% \CharacterTable
+%% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
+%% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
+%% Digits \0\1\2\3\4\5\6\7\8\9
+%% Exclamation \! Double quote \" Hash (number) \#
+%% Dollar \$ Percent \% Ampersand \&
+%% Acute accent \' Left paren \( Right paren \)
+%% Asterisk \* Plus \+ Comma \,
+%% Minus \- Point \. Solidus \/
+%% Colon \: Semicolon \; Less than \<
+%% Equals \= Greater than \> Question mark \?
+%% Commercial at \@ Left bracket \[ Backslash \\
+%% Right bracket \] Circumflex \^ Underscore \_
+%% Grave accent \` Left brace \{ Vertical bar \|
+%% Right brace \} Tilde \~}
+%\iffalse
+%
+% (c) copyright 2003 A Syropoulos & RWD Nickalls
+% This program can be redistributed and/or modified under the terms
+% of the LaTeX Project Public License Distributed from CTAN
+% archives in directory macros/latex/base/lppl.txt; either
+% version 1 of the License, or any later version.
+%
+% However, the above copyright notice does not apply in the case of
+% ``Crete University Press'' as this publisher is not allowed to
+% use or alter this file in any way.
+%
+% Please report errors or suggestions for improvement to
+%
+% Apostolos Syropoulos and/or Dick Nickalls
+% apostolo@obelix.ee.duth.gr dicknickalls@compuserve.com
+%
+%\fi
+% \CheckSum{21}
+% \iffalse This is a Metacomment
+%
+%<decimal, >\ProvidesFile{decimal.sty}
+%
+%<decimal, > [2003/07/12 v1.0 Package `decimal.sty']
+%
+% \begin{macrocode}
+%<*driver>
+\documentclass{ltxdoc}
+\usepackage{decimal}
+\newcommand{\hidot}{\ensuremath{\raise.95ex\hbox{.}}}
+\GetFileInfo{decimal.drv}
+\begin{document}
+ \DocInput{decimal.dtx}
+\end{document}
+%</driver>
+% \end{macrocode}
+% \fi
+%\StopEventually{}
+%\MakeShortVerb{\|}
+%\title{The `decimal' package}
+%\author{A.Syropoulos and R.W.D.Nickalls}
+% \date{2003/07/12}
+%\maketitle
+% \begin{abstract}
+% In traditional English typography the decimal point in printed as
+% slightly raised dot. This little package provides this functionallity
+% by making the period (``.'') active in math mode. In addition, we
+% redefine the commad |\.| so that it produces a dot in math mode, while
+% it retains its ordinary functionality in text mode.
+%\end{abstract}
+%
+% \section{Introduction}
+% The decimal point is variously used as a comma (European), a
+% full point (North American), or as a raised full point (English).
+% While the comma and full point have always been supported,
+% the English decimal point has been somewhat overlooked---until now.
+%
+% The \textsl{decimal} package places the height of the decimal
+% point level with the center of the `equals' sign, as shown by
+% $x=0.3456$, by re-implementing a math mode full point as the
+% |\cdot| character. However, in old texts the practice was to place
+% the full point rather higher, as in $25{\hidot}345$. While this is a bit
+% too high for visual comfort nowadays, the reason for the original high
+% position lies in the name used by metal type-setters for the decimal point,
+% namely a ``turned' full point, as mentioned in the following extract from
+% an $80$~year-old \textsl{Authors' \& Printers' Dictionary}.%
+% \footnote{Collins H (1921). Authors' \& Printers' Dictionary: a guide for
+% authors, editors, printers, correctors of the press, compositors, and
+% typists. With a full list of abbreviations. An attempt to codify the best
+% typographical practices of the present day. (pub: Humphrey Milford,
+% London).}
+%
+%\begin{center}
+%\begin{minipage}{0.7\textwidth}
+%\begin{itemize}
+% \item [\ ]\textbf{\hspace{-5mm}decimal fractions}, no decimal can be plural,
+% or take verb in pl., however many figures it contains; (typ.)
+% print in figures. The decimal
+% point in all cases to be a full point turned.
+%\end{itemize}
+%\end{minipage}
+%\end{center}
+%
+% But what is meant by a full point `turned'? The clue comes from an entry
+% in the dictionary on `turned commas', as follows.
+%\begin{center}
+%\begin{minipage}{0.7\textwidth}
+%\begin{itemize}
+% \item [\ ]\textbf{\hspace{-5mm}turned commas} (typ.),
+% those used at the commencement of a quotation, as these~``, two
+% apostrophes being at the end.
+%\end{itemize}
+%\end{minipage}
+%\end{center}
+% If we use a turned comma to show the location a full point would occupy
+% if `turned' in the same way, we can see that the position is somewhat
+% high, as in the decimal fraction $2$`$6$. Swapping the turned
+% comma for a similarly turned full point we obtain~$2{\hidot}6$, which
+% shows the decimal point in essentially the position we observe in older
+% texts. All is now clear---the typesetter simply turned the metal block of
+% the full point through $180\deg$ and, \textsl{eh presto}, he had a practical
+% decimal point, albeit slightly on the high side.
+%
+% \section{Usage}
+%
+% First use the \textsl{decimal} package using the |\usepackage{}| command
+% in the preamble.
+%\begin{center}
+% |\usepackage{decimal}|
+%\end{center}
+% The \textsl{decimal} package will now operate globally to
+% implement the English decimal point where one types a fullpoint in
+% math mode. For example the value $123.456$ is obtained by typing
+% |$123.456$|. The correct positioning of the decimal is preserved even
+% when the smaller mathmode fonts are used, as shown in the following two
+% examples.
+% $$
+% 23.562^{1.23^{\,2.6}}\hspace{2cm}
+% j = \sqrt{ \underbrace{{ax^2 + bx +c }}_{-3.78} \ +\cos(3\pi/4 +\theta)}
+% $$
+%
+% On those occasions when a true full point is
+% required in math mode (e.g.~at the end of a series of equations)
+% then this is implemented by typing |\.|. For example
+% $$
+% y = ax^2 + bx +c\.
+% $$
+% is obtained by typing |$y = ax^2 + bx +c\.$|.
+%
+% It is important to appreciate that there are math mode commands which
+% include a full point as an integral part of the command, and in these cases
+% one must, of course, \textsl{not} use the |\.| command. A common situation
+% where this arises is in the typesetting of unbalanced vertical braces, in
+% which case a full point is used by one of the commands to represent the
+% absent brace. For example, the structure
+% $$
+% \left\{
+% \begin{array}{l}
+% \displaystyle x = -b/6 \\
+% \displaystyle y = (4ac - b^2)/7
+% \end{array}
+% \right.
+% $$
+% is typeset by the following code
+%\begin{verbatim}
+% $$
+% \left\{
+% \begin{array}{l}
+% \displaystyle x = -b/6 \\
+% \displaystyle y = (4ac - b^2)/7
+% \end{array}
+% \right.
+% $$
+%\end{verbatim}
+% which uses the command \verb!\right.! to balance the left brace
+% command \verb!\left\{! before the array. Since the full point
+% is part of the command then there is no need to use the |\.| command.
+% If we now add some punctuation to the above structure, say, a
+% comma terminating the first line and a full point to terminate
+% the second line as follows,
+% $$
+% \left\{
+% \begin{array}{l}
+% \displaystyle x = -b/6, \\
+% \displaystyle y = (4ac - b^2)/3\.
+% \end{array}
+% \right.
+% $$
+% then we add the full point using
+% the command |\.| as shown in the following code.
+%\begin{verbatim}
+% $$
+% \left\{
+% \begin{array}{l}
+% \displaystyle x = -b/6, \\
+% \displaystyle y = (4ac - b^2)/7\.
+% \end{array}
+% \right.
+%
+%\end{verbatim}
+% Outside math mode the command \verb!\.! performs its usual
+% function of placing a dot above a character, for example
+% the command \verb!\.{a}! generates the \.{a} character.
+%
+% \section{The Implementation}
+%
+% The code of the package is quite simple. Initially, we introduce a new
+% command which has the functionality of the |\.| command. Then we redefine
+% the |\.| command so that it produces a dot in math mode, while it
+% retains its original functionality in text mode.
+% \begin{macrocode}
+%<*decimal>
+\let\peri@d\.
+\def\.{\ifmmode\mbox{.}\else\expandafter\peri@d\fi}
+% \end{macrocode}
+% One thing we need to do is to define a new math command which will yield a
+% |\cdot| without any leading or trailing white space.
+% \begin{macrocode}
+\DeclareMathSymbol{\cd@t}{\mathord}{symbols}{"01}
+% \end{macrocode}
+% Now, we are ready to change the mathcode of the period so that it produces
+% the desired result in math mode. Note that this ``trick'' is documented
+% in the \TeX{}book and in the book ``Digital Typography Using \LaTeX,''
+% Springer-Verlag New York, ISBN 0-387-95217-9, 2003.
+% \begin{macrocode}
+\mathcode`\.="8000
+{\catcode`\.=\active%
+ \gdef.{\cd@t} }
+%</decimal>
+% \end{macrocode}
+%
+% \Finale
diff --git a/Master/texmf-dist/source/latex/decimal/decimal.ins b/Master/texmf-dist/source/latex/decimal/decimal.ins
new file mode 100644
index 00000000000..4f479270c1c
--- /dev/null
+++ b/Master/texmf-dist/source/latex/decimal/decimal.ins
@@ -0,0 +1,52 @@
+%% Copyright 2003 Apostolos Syropoulos and Dick Nickalls
+%%
+%% This file is part of the `decimal' package.
+%% You are not allowed to modify its contents.
+%%
+\def\filedate{2003/07/12}
+\def\batchfile{decimal.ins}
+\input docstrip.tex
+
+{\ifx\generate\undefined
+\Msg{**********************************************}
+\Msg{*}
+\Msg{* This installation requires docstrip}
+\Msg{* version 2.3c or later.}
+\Msg{*}
+\Msg{* An older version of docstrip has been input}
+\Msg{*}
+\Msg{**********************************************}
+\errhelp{Move or rename old docstrip.tex.}
+\errmessage{Old docstrip in input path}
+\batchmode
+\csname @@end\endcsname
+\fi}
+
+\preamble
+
+ (c) copyright 2003 Apostolos Syropoulos and Dick Nickalls
+ This program can be redistributed and/or modified under the terms
+ of the LaTeX Project Public License Distributed from CTAN
+ archives in directory macros/latex/base/lppl.txt; either
+ version 1 of the License, or any later version.
+
+ Please report errors or suggestions for improvement to
+
+ Apostolos Syropoulos Dick Nickalls
+ apostolo@obelix.ee.duth.gr dicknickalls@compuserve.com
+
+\endpreamble
+
+
+\keepsilent
+
+\generate{\generateFile{decimal.sty}{f}{\from{decimal.dtx}{decimal}}}
+\postamble
+\endpostamble
+\Msg{**********************************************************}
+\Msg{* To finish installation you have to copy}
+\Msg{* the generated .sty file in the appropriate}
+\Msg{* directory and then to rehash your TeX system}
+\Msg{* Happy English TeXing!}
+\Msg{**********************************************************}
+\endinput