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Manual Reference Pages  - WCSWIDTH (3)

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

CONTENTS

Synopsis
Description
Notes

#include <wchar.h> 



int wcswidth(const wchar_t *s, size_t n); 

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.

The wcswidth function returns the number of column positions for the wide-character string s, truncated to at most length n.

UNIX98

wcwidth(3), iswprint(3)

The behaviour of wcswidth depends on the LC_CTYPE category of the current locale.

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