wcsnlen(3) [xfree86 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:
	       _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)

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

NAME

       wcpncpy - copy a fixed-size string of wide characters, returning a pointer to its end

SYNOPSIS

       #include <wchar.h>

       wchar_t *wcpncpy(wchar_t *dest, const wchar_t *src, size_t n);

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

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

DESCRIPTION

       The  wcpncpy()  function  is  the wide-character equivalent of the stpncpy(3) function.	It copies at most n wide characters from the wide-
       character string pointed to by src, including the terminating null wide (L''), to the array pointed to by dest.  Exactly n  wide  charac-
       ters  are  written at dest.  If the length wcslen(src) is smaller than n, the remaining wide characters in the array pointed to by dest are
       filled with L'' characters.  If the length wcslen(src) is greater than or equal to n, the string pointed to by dest  will  not  be  L''
       terminated.

       The strings may not overlap.

       The programmer must ensure that there is room for at least n wide characters at dest.

RETURN VALUE

       wcpncpy() returns a pointer to the last wide character written, that is, dest+n-1.

ATTRIBUTES

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

       +----------+---------------+---------+
       |Interface | Attribute	  | Value   |
       +----------+---------------+---------+
       |wcpncpy() | Thread safety | MT-Safe |
       +----------+---------------+---------+
CONFORMING TO

       POSIX.1-2008.

SEE ALSO

       stpncpy(3), wcsncpy(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								WCPNCPY(3)