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wcswidth(3)                Library Functions Manual                wcswidth(3)

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

LIBRARY
       Standard C library (libc, -lc)

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  repre-
       sent  the  wide-character  string  pointed  to by s, but at most n wide
       characters.  If a nonprintable wide character occurs among these  char-
       acters, -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
       For an  explanation  of  the  terms  used  in  this  section,  see  at-
       tributes(7).

       ┌─────────────────────────────────────┬───────────────┬────────────────┐
       │InterfaceAttributeValue          │
       ├─────────────────────────────────────┼───────────────┼────────────────┤
       │wcswidth()                           │ Thread safety │ MT-Safe locale │
       └─────────────────────────────────────┴───────────────┴────────────────┘

STANDARDS
       POSIX.1-2001, POSIX.1-2008.

NOTES
       The behavior of wcswidth() depends on the LC_CTYPE category of the cur-
       rent locale.

SEE ALSO
       iswprint(3), wcwidth(3)

Linux man-pages 6.03              2022-12-15                       wcswidth(3)

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