NAME

       wcscasecmp, wcsncasecmp - compare two wide-character strings, ignoring case

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <wchar.h>

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

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

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

DESCRIPTION

       The  wcscasecmp()  function  is the wide-character equivalent of the strcasecmp(3) function.  It compares
       the wide-character string pointed to by s1 and the wide-character string pointed to by s2, ignoring  case
       differences (towupper(3), towlower(3)).

       The  wcsncasecmp()  function is similar (the wide-character equivalent of strncasecmp(3)), except that it
       compares no more than n wide characters of s1 and s2.

RETURN VALUE

       The wcscasecmp() and wcsncasecmp() functions return an integer less than, equal to, or greater than  zero
       if s1 is, after ignoring case, found to be less than, to match, or be greater than s2, respectively.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).
       ┌──────────────────────────────────────────────────────────────────────┬───────────────┬────────────────┐
       │ Interface                                                            │ Attribute     │ Value          │
       ├──────────────────────────────────────────────────────────────────────┼───────────────┼────────────────┤
       │ wcscasecmp(), wcsncasecmp()                                          │ Thread safety │ MT-Safe locale │
       └──────────────────────────────────────────────────────────────────────┴───────────────┴────────────────┘

STANDARDS

       POSIX.1-2008.

HISTORY

       glibc 2.1.

NOTES

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

SEE ALSO

       strcasecmp(3), wcscmp(3)

Linux man-pages 6.15                               2025-06-28                                      wcscasecmp(3)