Originální popis anglicky:
wcwidth - number of column positions of a wide-character code
Návod, kniha: POSIX Programmer's Manual
#include <wchar.h>
int wcwidth(wchar_t
wc);
The
wcwidth() function shall determine the number of column positions
required for the wide character
wc. The application shall ensure that
the value of
wc is a character representable as a
wchar_t, and
is a wide-character code corresponding to a valid character in the current
locale.
The
wcwidth() function shall either return 0 (if
wc is a null
wide-character code), or return the number of column positions to be occupied
by the wide-character code
wc, or return -1 (if
wc does not
correspond to 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.
wcswidth() , the Base Definitions volume of
IEEE Std 1003.1-2001,
<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
.
