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WCWIDTH(3) | Linux Programmer's Manual | WCWIDTH(3) |
NAME¶
wcwidth - determine columns needed for a wide character
SYNOPSIS¶
#define _XOPEN_SOURCE /* See feature_test_macros(7) */ #include <wchar.h> int wcwidth(wchar_t c);
DESCRIPTION¶
The wcwidth() function returns the number of columns needed to represent the wide character c. If c is a printable wide character, the value is at least 0. If c is null wide character (L'\0'), the value is 0. Otherwise -1 is returned.
RETURN VALUE¶
The wcwidth() function returns the number of column positions for c.
CONFORMING TO¶
POSIX.1-2001.
Note that glibc before 2.2.5 used the prototype
int wcwidth(wint_t c);
NOTES¶
The behavior of wcwidth() depends on the LC_CTYPE category of the current locale.
SEE ALSO¶
COLOPHON¶
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
2011-09-28 | GNU |