Linux manual pages Section 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

iswprint(3), wcwidth(3)

COLOPHON

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