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Copyright 2014 Garrett D'Amore <garrett@damore.org>
#include <wchar.h> int wcwidth(wchar_t wc);
#include <wchar.h> #include <xlocale.h> int wcwidth_l(wchar_t wc, locale_t loc);
The wcwidth() function determines the number of column positions required for the wide character wc. The value of wc must be a character representable as a wchar_t, and must be a wide-character code corresponding to a valid character in the current locale.
The function wcwidth_l() behaves identically to wcwidth(), except instead of operating in the current locale, it operates in the locale specified by loc.
These functions either return 0 (if wc is a null wide-character code), or the number of column positions to be occupied by the wide-character code wc, or -1 (if wc does not correspond to a printing wide-character code).
No errors are defined.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| CSI Enabled |
| Interface Stability See below. |
| MT-Level MT-Safe |
The wcwidth() function is Standard. The wcwidth_l() function is Uncommitted.
newlocale(3C), setlocale(3C), uselocale(3C), wcswidth(3C), attributes(5), standards(5)