wcsncasecmp(3) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | VERSIONS | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON

WCSNCASECMP(3)          Linux Programmer's Manual         WCSNCASECMP(3)

NAME         top

       wcsncasecmp - compare two fixed-size wide-character strings,
       ignoring case

SYNOPSIS         top

       #include <wchar.h>

       int wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n);

   Feature Test Macro Requirements for glibc (see
   feature_test_macros(7)):

       wcsncasecmp():
           Since glibc 2.10:
               _POSIX_C_SOURCE >= 200809L
           Before glibc 2.10:
               _GNU_SOURCE

DESCRIPTION         top

       The wcsncasecmp() function is the wide-character equivalent of
       the strncasecmp(3) function.  It compares the wide-character
       string pointed to by s1 and the wide-character string pointed to
       by s2, but at most n wide characters from each string, ignoring
       case differences (towupper(3), towlower(3)).

RETURN VALUE         top

       The wcsncasecmp() function returns zero if the wide-character
       strings at s1 and s2, truncated to at most length n, are equal
       except for case distinctions.  It returns a positive integer if
       truncated s1 is greater than truncated s2, ignoring case.  It
       returns a negative integer if truncated s1 is smaller than
       truncated s2, ignoring case.

VERSIONS         top

       The wcsncasecmp() function is provided in glibc since version
       2.1.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).

       ┌───────────────────────────────┬───────────────┬────────────────┐
       │Interface                      Attribute     Value          │
       ├───────────────────────────────┼───────────────┼────────────────┤
       │wcsncasecmp()                  │ Thread safety │ MT-Safe locale │
       └───────────────────────────────┴───────────────┴────────────────┘

CONFORMING TO         top

       POSIX.1-2008.  This function is not specified in POSIX.1-2001,
       and is not widely available on other systems.

NOTES         top

       The behavior of wcsncasecmp() depends on the LC_CTYPE category of
       the current locale.

SEE ALSO         top

       strncasecmp(3), wcsncmp(3)

COLOPHON         top

       This page is part of release 5.13 of the Linux man-pages project.
       A description of the project, information about reporting bugs,
       and the latest version of this page, can be found at
       https://www.kernel.org/doc/man-pages/.

GNU                            2021-03-22                 WCSNCASECMP(3)

Pages that refer to this page: strcasecmp(3)wcsncmp(3)