NAME

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

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <wchar.h>

       int wcsncasecmp(const wchar_t s1[.n], const wchar_t s2[.n], 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

       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.

ATTRIBUTES

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

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

STANDARDS

       POSIX.1-2008.

HISTORY

       glibc 2.1.

NOTES

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

SEE ALSO

       strncasecmp(3), wcsncmp(3)