bionic (3) wcsncasecmp.3.gz

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

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