Manpage of WCSNLEN
WCSNLENSection: Linux Programmer's Manual (3)
NAMEwcsnlen - determine the length of a fixed-size wide-character string
#include <wchar.h>size_t wcsnlen(const wchar_t *s, size_t maxlen);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
- Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
- Before glibc 2.10:
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 null wide character (Laq\0aq), but at most maxlenwide characters (note: this parameter is not a byte count). In doing this, wcsnlen() looks at only the first maxlenwide characters at sand never beyond s+maxlen.
RETURN VALUEThe wcsnlen() function returns wcslen(s), if that is less than maxlen, or maxlenif there is no null wide character among the first maxlenwide characters pointed to by s.
VERSIONSThe wcsnlen() function is provided in glibc since version 2.1.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
SEE ALSOstrnlen(3), wcslen(3)
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