NAME
wcsnlen - determine the length of a fixed-size wide-character string SYNOPSIS
#include
sizet wcsnlen(const wchart *s, sizet maxlen); Feature Test Macro Requirements for glibc (see featuretestmacros(7)): wcsnlen(): Since glibc 2.10: XOPENSOURCE >= 700 || POSIXCSOURCE >= 200809L Before glibc 2.10: GNUSOURCE 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 charac‐ ter (L'\0'), 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
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GNU 2011-10-01 WCSNLEN(3)