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@c Documentation of gnulib module 'c-strcase'.
@c Copyright (C) 2008--2021 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, no Front-Cover Texts, and no Back-Cover Texts. A
@c copy of the license is at <https://www.gnu.org/licenses/fdl-1.3.en.html>.
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}.
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