[MAN] wcsnlen

Content-type: text/html; charset=UTF-8

WCSNLEN

Section: Linux Programmer's Manual (3)
Updated: 2016-03-15
Index Return to Main Contents

---

 

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'\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

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/.

---

 

Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

VERSIONS

ATTRIBUTES

CONFORMING TO

SEE ALSO

COLOPHON

---

This document was created by man2html, using the manual pages.
Time: 04:45:44 GMT, September 16, 2022