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WCSWIDTH

Linux Programmer's Manual (3)
2014-01-22
 

NAME

wcswidth - determine columns needed for a fixed-size wide-character string  

SYNOPSIS

#define _XOPEN_SOURCE             /* See feature_test_macros(7) */
#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.  

ATTRIBUTES

 

Multithreading (see pthreads(7))

The wcswidth() function is thread-safe with exceptions. It can be safely used in multithreaded applications, as long as setlocale(3) is not called to change the locale during its execution.  

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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Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
Multithreading (see pthreads(7))
CONFORMING TO
NOTES
SEE ALSO
COLOPHON

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Time: 21:43:03 GMT, July 12, 2014