строка с широкими символами (sized wide-character string)
Пролог (Prolog)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
Имя (Name)
wcslen, wcsnlen — get length of a fixed-sized wide-character
string
Синопсис (Synopsis)
#include <wchar.h>
size_t wcslen(const wchar_t *ws);
size_t wcsnlen(const wchar_t *ws, size_t maxlen);
Описание (Description)
For wcslen(): The functionality described on this reference page
is aligned with the ISO C standard. Any conflict between the
requirements described here and the ISO C standard is
unintentional. This volume of POSIX.1‐2017 defers to the ISO C
standard.
The wcslen() function shall compute the number of wide-character
codes in the wide-character string to which ws points, not
including the terminating null wide-character code.
The wcsnlen() function shall compute the smaller of the number of
wide characters in the array to which ws points, not including
any terminating null wide-character code, and the value of
maxlen. The wcsnlen() function shall never examine more than the
first maxlen characters of the wide-character array pointed to by
ws.
Возвращаемое значение (Return value)
The wcslen() function shall return the length of ws.
The wcsnlen() function shall return the number of wide characters
preceding the first null wide-character code in the array to
which ws points, if ws contains a null wide-character code within
the first maxlen wide characters; otherwise, it shall return
maxlen.
No return values are reserved to indicate an error.
Ошибки (Error)
No errors are defined.
The following sections are informative.
Примеры (Examples)
None.
Использование в приложениях (Application usage)
None.
Обоснование (Rationale)
None.
Будущие направления (Future directions)
None.
Смотри также (See also)
strlen(3p)
The Base Definitions volume of POSIX.1‐2017, wchar.h(0p)
