Originální popis anglicky:
wcswidth - number of column positions of a wide-character string
Návod, kniha: POSIX Programmer's Manual
#include <wchar.h>
int wcswidth(const wchar_t *
pwcs, size_t
n );
The
wcswidth() function shall determine the number of column positions
required for
n wide-character codes (or fewer than
n
wide-character codes if a null wide-character code is encountered before
n wide-character codes are exhausted) in the string pointed to by
pwcs.
The
wcswidth() function either shall return 0 (if
pwcs points to a
null wide-character code), or return the number of column positions to be
occupied by the wide-character string pointed to by
pwcs, or return -1
(if any of the first
n wide-character codes in the wide-character
string pointed to by
pwcs is not a printable wide-character code).
No errors are defined.
The following sections are informative.
None.
This function was removed from the final ISO/IEC 9899:1990/Amendment
1:1995 (E), and the return value for a non-printable wide character is not
specified.
None.
None.
wcwidth() , the Base Definitions volume of
IEEE Std 1003.1-2001, Section 3.103, Column Position,
<wchar.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
