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 non-printable 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

iswprint(3), wcwidth(3)

COLOPHON

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