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WCWIDTH(3) | Linux Programmer's Manual | WCWIDTH(3) |
NAME¶
wcwidth - determine columns needed for a wide characterSYNOPSIS¶
#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.ATTRIBUTES¶
For an explanation of the terms used in this section, see attributes(7).Interface | Attribute | Value |
wcwidth () | Thread safety | MT-Safe locale |
CONFORMING TO¶
POSIX.1-2001, POSIX.1-2008.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¶
iswprint(3), wcswidth(3)COLOPHON¶
This page is part of release 4.10 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/.2015-08-08 | GNU |