From e0c6872cf40896c7be36b11dcc744620f10adf1d Mon Sep 17 00:00:00 2001
From: Norbert Preining <norbert@preining.info>
Date: Mon, 2 Sep 2019 13:46:59 +0900
Subject: Initial commit

---
 macros/latex/contrib/grnumalt/grnumalt.dtx | 281 +++++++++++++++++++++++++++++
 1 file changed, 281 insertions(+)
 create mode 100644 macros/latex/contrib/grnumalt/grnumalt.dtx

(limited to 'macros/latex/contrib/grnumalt/grnumalt.dtx')

diff --git a/macros/latex/contrib/grnumalt/grnumalt.dtx b/macros/latex/contrib/grnumalt/grnumalt.dtx
new file mode 100644
index 0000000000..df20e518e6
--- /dev/null
+++ b/macros/latex/contrib/grnumalt/grnumalt.dtx
@@ -0,0 +1,281 @@
+%% \CheckSum{134}
+%% \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
+%
+%% This is file `grnumalt.dtx'
+%% (c) 1997 Apostolos Syropoulos.
+%% All rights reserved.
+%
+%  Please report errors or suggestions for improvement to
+%    
+%    Apostolos Syropoulos
+%    366, 28th October Str.
+%    GR-671 00 Xanthi, GREECE
+%    apostolo@platon.ee.duth.gr or apostolo@obelix.ee.duth.gr
+%
+%\fi
+%
+% \iffalse
+%    \begin{macrocode}
+%<*driver>
+\documentclass{ltxdoc}
+\def\PiIt#1{{%
+    \newdimen\boxW \newdimen\boxH
+    \settowidth{\boxW}{#1}%
+    \settoheight{\boxH}{#1}%
+    \addtolength{\boxW}{0.8pt}
+    \vbox{%
+    \hrule width\boxW\hbox{%
+          \vrule height\boxH\mbox{#1}%
+          \vrule height\boxH}}\kern.5pt}}
+\GetFileInfo{grnumalt.drv}
+\begin{document}
+   \DocInput{grnumalt.dtx}
+\end{document}
+%</driver>
+%    \end{macrocode}
+% \fi
+%
+%\title{Athenian Numerals}
+%\author{Apostolos Syropoulos\\366, 28th October Str.\\
+%GR-671 00 Xanthi, HELLAS\\ Email:\texttt{apostolo@platon.ee.duth.gr}}
+% \date{1997/09/19}
+%\maketitle
+% 
+%\MakeShortVerb{\|}
+%
+%\section{Introduction}
+% 
+% This little \LaTeX\ package implements the macro 
+% \DescribeMacro{\athnum}
+% |\athnum|. The macro transforms an Arabic numeral, i.e., the kind
+% of numerals we all use (e.g., 1, 5, 789 etc), to the corresponding
+% {\itshape Athenian} numeral. Athenian numerals were in use only in 
+% ancient Athens.
+% The special multiples, which the system employs, are drawn 
+% \DescribeMacro{\PiIt} with the special macro |\PiIt|. The macro 
+% produces a more or less $\Pi$-like shape above a letter. 
+%
+%\section{The Numbering System}
+%
+% The athenian numbering system, like the roman one, employs
+% letters to denote important numbers. Multiple occurrence of a letter denote
+% a multiple of the ``important'' number, e.g., the letter I denotes 1, so
+% III denotes 3. Here are the basic digits used in the Athenian numbering
+% system:
+% \begin{itemize}
+%  \item I denotes the number one (1)
+%  \item $\Pi$ denotes the number five (5)
+%  \item $\Delta$ denotes the number ten (10)
+%  \item H denotes the number one hundred (100)
+%  \item X denotes the number one thousand (1000) 
+%  \item M denotes the number ten thousands (10000)
+%\end{itemize}
+% Moreover,  the letters $\Delta$, H, X, and M under the letter $\Pi$, 
+% denote five times their original value, e.g., the symbol 
+% \PiIt{X}, denotes the number 5000, and the symbol  
+% \PiIt{$\Delta$}, denotes the number 50. It must be noted that
+% the numbering system does not provide negative numerals or a symbol for
+% zero. 
+%
+% The Athenian numbering system is described, among others, in an article in
+% Encyclopedia $\Delta o\mu\acute{\eta}$, Vol. 2, page 280, 7th edition,
+% Athens, October 2, 1975.
+%
+% \section{The Code}  
+% Before we do anything further, we have to identify the package.
+% \StopEventually
+%
+%    \begin{macrocode}
+%<*package>
+\ProvidesPackage{grnumalt}[1997/09/19\space v1.1]
+\typeout{Package: `grnumalt' v1.0\space <1997/09/19> (AS)}
+%    \end{macrocode}
+%
+%\begin{macro}{\PiIt}
+% It is very important to be able to correctly typeset  the multiples of 
+% the numbering system. For this purpose we define the macro |\PiIt|. The
+% macro uses two ``length'' variables.
+%    \begin{macrocode}
+\newdimen\@boxW \newdimen\@boxH
+%    \end{macrocode}
+% We make the |\PiIt| macro a robust command.
+%    \begin{macrocode}
+\DeclareRobustCommand{\PiIt}[1]{%
+%    \end{macrocode}
+% In order to correctly produce the $\Pi$ symbol we need to know the 
+% height and width of the letter that goes under a $\Pi$. This is done by 
+% using the standard \LaTeX\ macros: |\settowidth| and |\settoheight|. 
+%    \begin{macrocode}
+    \settowidth{\@boxW}{#1}%
+    \settoheight{\@boxH}{#1}%
+%    \end{macrocode}
+% Since, the width of an  ordinary rule is 0.4 pt we must add 0.8 pt to
+% the width of the letter.
+%    \begin{macrocode}
+    \addtolength{\@boxW}{0.8pt}
+%    \end{macrocode}
+% Now comes the interesting part: the actual drawing. We create a vertical
+% box. Inside this box we draw a horizontal rule of width equal to
+% the width of the letter. Next, we create a horizontal box in order to
+% make the vertical lines. We draw the first vertical line, then we put
+% the letter in a |\mbox|, since it may be a mathematical 
+% symbol\footnote{greek letters are considered  mathematical symbols
+% by \TeX.}. After the |\mbox| we draw the second vertical line and we
+% ``close'' the horizontal box. A little white space is put after the vertical
+% box, so that adjacent multiplies do not look ugly!
+%    \begin{macrocode}
+    \vbox{%
+    \hrule width\@boxW\hbox{%
+          \vrule height\@boxH\mbox{#1}%
+          \vrule height\@boxH}}\kern.5pt}
+%    \end{macrocode}
+%\end{macro}
+%\begin{macro}{\athnum}            
+% Now, we turn our attention to the definition of the macro 
+% |\athnum|. This macro uses one integer variable.
+%    \begin{macrocode}
+\newcount\@ath@num
+%    \end{macrocode}
+% The macro |\athnum| is also defined as a robust command.
+%    \begin{macrocode}
+\DeclareRobustCommand{\athnum}[1]{%
+%    \end{macrocode}
+% The macro does not work in math mode so we must ensure that it will not
+% be used in math mode. We could use |\ensuremath|, but our definition
+% is too long...
+%    \begin{macrocode}
+        \ifmmode
+          \errhelp{^^J This macro has been defined to work^^J
+                     *only* in non-math mode. It is definitely^^J
+                     sure that you are  using it in math mode.^^J}%
+          \errmessage{^^JYou can't use macro atheniannumeral^^J 
+                        in math mode.^^J}%
+%    \end{macrocode}
+% If we are not in math mode, we can start computing the Athenian numeral.
+% After assigning to variable |\@ath@num| the value of the macro's argument, we
+% make sure that the argument is in the expected range, i.e., it is greater
+% than zero. In case it isn't we simply produce a |\space|, warn the user
+% about it and quit.
+%    \begin{macrocode}
+        \else\@ath@num#1\relax
+        \ifnum\@ath@num=\z@%
+          \space%
+          \PackageWarning{grnumalt}{%
+           Illegal value (\the\@ath@num) for athenian numeral}%
+        \else\ifnum\@ath@num<\z@%
+          \space%
+          \PackageWarning{grnumalt}{%
+          Illegal value (\the\@ath@num) for athenian numeral}%
+        \else$
+%    \end{macrocode}
+% Having done all the necessary checks, we are now ready to do the actual
+% computation. If the number is greater than $49999$, then it certainly
+% has at least one \PiIt{M} ``digit''. We find all such digits by continuously
+% subtracting $50000$ from |\NumA|, until |\NumA| becomes less than
+% $50000$. 
+%    \begin{macrocode}
+            \loop\ifnum\@ath@num>49999
+               \PiIt{$\mathrm{M}$}
+               \advance\@ath@num-50000
+            \repeat
+%    \end{macrocode}
+% We now check for tens of thousands.
+%    \begin{macrocode}
+            \loop\ifnum\@ath@num>9999
+            \mathrm{M}\advance\@ath@num-\@M
+            \repeat
+%    \end{macrocode}
+% Since a number can have only on \PiIt{X} ``digit'' (equivalent to 5000), it 
+% is easy to check it out and produce the corresponding numeral in case it does
+% have one.
+%    \begin{macrocode}
+            \ifnum\@ath@num>4999
+               \PiIt{$\mathrm{X}$}
+               \advance\@ath@num-5000
+            \fi
+%    \end{macrocode}
+% Next, we check for thousands, the same way we checked for tens of thousands.
+%    \begin{macrocode}
+            \loop\ifnum\@ath@num>999
+            \mathrm{X}\advance\@ath@num-\@m
+            \repeat
+%    \end{macrocode}
+% Like the five thousands, a numeral can have at most one \PiIt{H} ``digit''
+% (equivalent to 500).
+%    \begin{macrocode}
+            \ifnum\@ath@num>499
+               \PiIt{$\mathrm{H}$}
+               \advance\@ath@num-500
+            \fi
+%    \end{macrocode}
+% It is time to check hundreds, which follow the same pattern as thousands
+%    \begin{macrocode}
+            \loop\ifnum\@ath@num>99
+            \mathrm{H}\advance\@ath@num-100
+            \repeat
+%    \end{macrocode}
+% A numeral can have only one \PiIt{$\Delta$} ``digit'' (equivalent to 50).
+%    \begin{macrocode} 
+            \ifnum\@ath@num>49
+               \PiIt{$\Delta$}
+               \advance\@ath@num-50
+            \fi
+%    \end{macrocode}
+% Let's check now decades.
+%    \begin{macrocode}         
+            \loop\ifnum\@ath@num>9
+            \Delta\advance\@ath@num by-10
+            \repeat
+%    \end{macrocode}
+% We check for fives and, finally, for the digits 1, 2, 3, and 4.
+%    \begin{macrocode}
+            \ifnum\@ath@num>4
+               \Pi
+               \advance\@ath@num-5
+            \fi
+            \ifcase\@ath@num
+               \or\mathrm{I}
+               \or\mathrm{II}
+               \or\mathrm{III}
+               \or\mathrm{IIII}
+            \fi$
+   \fi\fi\fi}
+%    \end{macrocode}
+% \DescribeMacro{\@athnum} The command |\@athnum| is defined just to make
+% it possible to have, e.g., page numbering with athenian numerals.
+%    \begin{macrocode}
+\let\@athnum\athnum 
+%</package>
+%    \end{macrocode}
+%\end{macro}
+%
+% \noindent{\large\bfseries Dedication}\\
+% I would like to dedicate this piece of work to my son Demetrios-Georgios.
+%
+% \Finale
+%
+\endinput
+
+
+
+
+
+
+
+
+
-- 
cgit v1.2.3

