Man page - wcsnlen(3)

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Manual

wcsnlen

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
STANDARDS
HISTORY
SEE ALSO

NAME

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

LIBRARY

Standard C library ( libc , -lc )

SYNOPSIS

#include <wchar.h>

size_t wcsnlen(const wchar_t s [. maxlen ], 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'\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-1] .

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 .

ATTRIBUTES

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

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STANDARDS

POSIX.1-2008.

HISTORY

glibc 2.1.

SEE ALSO

strnlen (3), wcslen (3)