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wcsncasecmp(3)


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:
           _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.

ATTRIBUTES

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

   
   Interface      Attribute      Value          
   
   wcsncasecmp()  Thread safety  MT-Safe locale

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

   This  page  is  part of release 4.09 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/.



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