@c Documentation of gnulib module 'c-strcase'.

@c Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.

@c Permission is granted to copy, distribute and/or modify this document
@c under the terms of the GNU Free Documentation License, Version 1.3 or
@c any later version published by the Free Software Foundation; with no
@c Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
@c Texts.  A copy of the license is included in the ``GNU Free
@c Documentation License'' file as part of this distribution.

The @code{c-strcase} module contains case-insensitive string comparison
functions operating on single-byte character strings, like the functions in
@code{<strings.h>}, that operate as if the locale encoding was ASCII.
(The "C" locale on many systems has the locale encoding "ASCII".)

The functions are:
@smallexample
extern int c_strcasecmp (const char *s1, const char *s2);
extern int c_strncasecmp (const char *s1, const char *s2, size_t n);
@end smallexample

For case conversion here, only ASCII characters are considered to be
upper case or lower case.

Note: The functions @code{strcasecmp}, @code{strncasecmp} from
@code{<strings.h>} support only unibyte locales; for multibyte locales,
you need the functions @code{mbscasecmp}, @code{mbsncasecmp},
@code{mbspcasecmp}.