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WCSWIDTH(3) |
Library Functions Manual |
WCSWIDTH(3) |
NAME
wcswidth — number of column positions in wide-character string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <wchar.h>
int
wcswidth(const wchar_t *pwcs, size_t n);
DESCRIPTION
The wcswidth() function determines the number of column positions required for the first n characters of pwcs, or until a nul wide character (L'\0') is encountered.
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.
STANDARDS
The wcswidth() function conforms to IEEE Std 1003.1-2001 (“POSIX.1”).
