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clqr-characters.tex
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clqr-characters.tex
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% Copyright (C) 2008, 2010, 2011, 2014, 2018 Bert Burgemeister
%
% Permission is granted to copy, distribute and/or modify this
% document under the terms of the GNU Free Documentation License,
% Version 1.2; with no Invariant Sections, no Front-Cover Texts and
% no Back-Cover Texts. For details see file COPYING.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\section{Characters}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
The \kwd*{standard-char} type comprises \LIT{a}-\LIT{z},
\LIT{A}-\LIT{Z}, \LIT{0}-\LIT{9}, \LIT{Newline}, \LIT{Space}, and
\LIT{!?\$"'`.:,;*+-/|{\char`\\}\TLD\_\^{}<=>\#\%@\&()[]\{\}}.
\index{NEWLINE}\index{SPACE}
\begin{LIST}{1cm}
\IT{\arrGOO{(\FU*{CHARACTERP} \VAR{ foo})\\
(\FU*{STANDARD-CHAR-P} \VAR{ char})}{.}}
{
\retval{\T} if argument is of indicated type.
}
\IT{\arrGOO{(\FU*{GRAPHIC-CHAR-P} \VAR{ character})\\
(\FU*{ALPHA-CHAR-P} \VAR{ character})\\
(\FU*{ALPHANUMERICP} \VAR{ character})}{.}}
{
\retval{\T} if \VAR{character} is visible, alphabetic, or
alphanumeric, respectively.
}
\IT{\arrGOO{(\FU*{UPPER-CASE-P} \VAR{ character})\\
(\FU*{LOWER-CASE-P} \VAR{ character})\\
(\FU*{BOTH-CASE-P} \VAR{ character})}{.}}
{
Return \retval{\T} if \VAR{character} is uppercase, lowercase, or
able to be in another case, respectively.
}
\IT{(\FU*{DIGIT-CHAR-P} \VAR{character}
\Op{\VAR{radix}\DF{\LIT{10}}})}
{
Return \retval{its weight} if \VAR{character} is a digit, or
\retval{\NIL} otherwise.
}
\IT{\arrGOO{(\FU*{CHAR=}\RP{\VAR{
character}})\\(\FU*{CHAR/=}\RP{\VAR{
character}})}{.}}
{
Return \retval{\T} if all \VAR{character}s, or
none, respectively, are equal.
}
\IT{\arrGOO{(\FU*{CHAR-EQUAL}\RP{\VAR{
character}})\\(\FU*{CHAR-NOT-EQUAL}\RP{\VAR{
character}})}{.}}
{
Return \retval{\T} if all \VAR{character}s, or
none, respectively, are equal ignoring case.
}
\IT{\arrGOO{(\FU{CHAR\boldmath$>$}\RP{\VAR{
character}})\\(\FU{CHAR\boldmath$>$=}\RP{\VAR{
character}})\\(\FU{CHAR\boldmath$<$}\RP{\VAR{
character}})\\(\FU{CHAR\boldmath$<$=}\RP{\VAR{
character}})}{.}}
{
\index{CHAR>@CHAR$>$}%
\index{CHAR>=@CHAR$>$=}%
\index{CHAR<@CHAR$<$}%
\index{CHAR<=@CHAR$<$=}%
Return \retval{\T} if \VAR{character}s are
monotonically decreasing, monotonically non-increasing, monotonically
increasing, or monotonically non-decreasing, respectively.
}
\IT{\arrGOO{
(\FU*{CHAR-GREATERP}\RP{\VAR{ character}})\\
(\FU*{CHAR-NOT-LESSP}\RP{\VAR{ character}})\\
(\FU*{CHAR-LESSP}\RP{\VAR{ character}})\\
(\FU*{CHAR-NOT-GREATERP}\RP{\VAR{ character}})}{.}}
{
Return \retval{\T} if \VAR{character}s are monotonically
decreasing, monotonically non-increasing, monotonically
increasing, or monotonically non-decreasing, respectively,
ignoring case.
}
\IT{\arrGOO{(\FU*{CHAR-UPCASE} \VAR{ character})\\
(\FU*{CHAR-DOWNCASE} \VAR{ character})}{.}}
{
Return corresponding uppercase/lowercase \retval{character},
respectively.
}
\IT{(\FU*{DIGIT-CHAR} \VAR{i} \Op{\VAR{radix}\DF{\LIT{10}}})}
{
\retval{Character} representing digit \VAR{i}.
}
\IT{(\FU*{CHAR-NAME} \VAR{char})}
{
\VAR{char}'s \retval{name} if any, or
\retval{\NIL}.
}
\IT{(\FU*{NAME-CHAR} \VAR{foo})\qquad\qquad}
{
\retval{Character} named \VAR{foo} if any, or
\retval{\NIL}.
}
\IT{\arrGOO{(\FU*{CHAR-INT} \VAR{ character})\\
(\FU*{CHAR-CODE} \VAR{ character})}{.}}
{
\retval{Code} of \VAR{character}.
}
\IT{(\FU*{CODE-CHAR} \VAR{code})\qquad\qquad}
{
\retval{Character} with \VAR{code}.
}
\IT{\CNS*{CHAR-CODE-LIMIT}}
{
Upper bound of (\FU{CHAR-CODE} \VAR{char}); $\geq 96$.
}
\IT{(\FU*{CHARACTER} \VAR{c})}
{
Return \retval{\kwd{\#$\backslash$}\VAR{c}}.
}
\end{LIST}
%%% Local Variables:
%%% mode: latex
%%% TeX-master: "clqr"
%%% End: