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 4.15 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                              2016-03-15                   WCSNCASECMP(3)

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

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