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NAME

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

SYNOPSIS

       #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:
               _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
           Before glibc 2.10:
               _GNU_SOURCE

DESCRIPTION

       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

       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

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

CONFORMING TO

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

NOTES

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

SEE ALSO

       strncasecmp(3), wcsncmp(3)

COLOPHON

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