Manual Section... (3) - page: wcsnlen
NAMEwcsnlen - determine the length of a fixed-size wide-character string
#define _GNU_SOURCE #include <wchar.h> size_t wcsnlen(const wchar_t *s, size_t maxlen);
DESCRIPTIONThe 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'\0' 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 VALUEThe wcsnlen() function returns wcslen(s), if that is less than maxlen, or maxlen if there is no L'\0' character among the first maxlen wide characters pointed to by s.
CONFORMING TOThis function is a GNU extension.
SEE ALSOstrnlen(3), wcslen(3)
COLOPHONThis page is part of release 3.24 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/.
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Time: 15:27:12 GMT, June 11, 2010