wcswidth3
Number of column positions in wide-character string
Usage
#include <wchar.h>
int
wcswidth(const wchar_t *pwcs, size_t n);
#include <wchar.h>
#include <xlocale.h>
int
wcswidth_l(const wchar_t *pwcs, size_t n, locale_t loc);
Library
Standard C Library (libc, -lc)
Overview
The wcswidth() function determines the number of column positions required for the first n characters of pwcs, or until a null wide character (L'\0') is encountered.
Although the wcswidth() function uses the current locale, the wcswidth_l() function may be passed a locale directly. See xlocale(3) for more information.
Return values
The wcswidth() function returns 0 if pwcs is an empty string (L""), -1 if a non-printing wide character is encountered; otherwise, it returns the number of column positions occupied.
Releases
145 releases since Mac OS X 10.3; the text changed 1 time.