wcswidth(3)
NAME
wcswidth - determine columns needed for a fixed-size wide-character
string
SYNOPSIS
#define _XOPEN_SOURCE #include <wchar.h> int wcswidth(const wchar_t *s, size_t n);
DESCRIPTION
The wcswidth() function returns the number of columns needed to represent the wide-character string pointed to by s, but at most n wide
characters. If a nonprintable wide character occurs among these characters, -1 is returned.
RETURN VALUE
The wcswidth() function returns the number of column positions for the
wide-character string s, truncated to at most length n.
CONFORMING TO
POSIX.1-2001.
NOTES
The behavior of wcswidth() depends on the LC_CTYPE category of the current locale.
SEE ALSO
COLOPHON
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