wcsnlen(3) [linux man page]

WCSNLEN(3)						     Linux Programmer's Manual							WCSNLEN(3)

NAME

       wcsnlen - determine the length of a fixed-size wide-character string

SYNOPSIS

       #include <wchar.h>

       size_t wcsnlen(const wchar_t *s, size_t maxlen);

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

       wcsnlen():
	   Since glibc 2.10:
	       _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
	   Before glibc 2.10:
	       _GNU_SOURCE

DESCRIPTION

       The wcsnlen() function is the wide-character equivalent of the strnlen(3) function.  It returns the number of wide-characters in the string
       pointed to by s, not including the terminating L'' character, but at most maxlen.  In doing this,  wcsnlen()  looks  only  at	the  first
       maxlen wide-characters at s and never beyond s+maxlen.

RETURN VALUE

       The wcsnlen() function returns wcslen(s), if that is less than maxlen, or maxlen if there is no L'' character among the first maxlen wide
       characters pointed to by s.

VERSIONS

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

CONFORMING TO

       This function is a GNU extension.

SEE ALSO

       strnlen(3), wcslen(3)

COLOPHON

       This page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU
								    2010-09-15								WCSNLEN(3)

WCSNLEN(3)						     Linux Programmer's Manual							WCSNLEN(3)

NAME

       wcsnlen - determine the length of a fixed-size wide-character string

SYNOPSIS

       #include <wchar.h>

       size_t wcsnlen(const wchar_t *s, size_t maxlen);

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

       wcsnlen():
	   Since glibc 2.10:
	       _POSIX_C_SOURCE >= 200809L
	   Before glibc 2.10:
	       _GNU_SOURCE

DESCRIPTION

       The wcsnlen() function is the wide-character equivalent of the strnlen(3) function.  It returns the number of wide-characters in the string
       pointed to by s, not including the terminating null wide character (L''), but at most maxlen wide characters (note: this parameter is not
       a byte count).  In doing this, wcsnlen() looks at only the first maxlen wide characters at s and never beyond s+maxlen.

RETURN VALUE

       The  wcsnlen() function returns wcslen(s), if that is less than maxlen, or maxlen if there is no null wide character among the first maxlen
       wide characters pointed to by s.

VERSIONS

       The wcsnlen() 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   |
       +----------+---------------+---------+
       |wcsnlen() | Thread safety | MT-Safe |
       +----------+---------------+---------+
CONFORMING TO

       POSIX.1-2008.

SEE ALSO

       strnlen(3), wcslen(3)

COLOPHON

       This page is part of release 4.15 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/.

GNU
								    2016-03-15								WCSNLEN(3)