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wcswidth (3)
  • wcswidth (3) ( Solaris man: Библиотечные вызовы )
  • wcswidth (3) ( FreeBSD man: Библиотечные вызовы )
  • wcswidth (3) ( Русские man: Библиотечные вызовы )
  • wcswidth (3) ( Linux man: Библиотечные вызовы )
  • >> wcswidth (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    wcswidth - number of column positions of a wide-character string
     
    

    SYNOPSIS

    #include <wchar.h>

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

    DESCRIPTION

    The wcswidth() function shall determine the number of column positions required for n wide-character codes (or fewer than n wide-character codes if a null wide-character code is encountered before n wide-character codes are exhausted) in the string pointed to by pwcs.  

    RETURN VALUE

    The wcswidth() function either shall return 0 (if pwcs points to a null wide-character code), or return the number of column positions to be occupied by the wide-character string pointed to by pwcs, or return -1 (if any of the first n wide-character codes in the wide-character string pointed to by pwcs is not a printable wide-character code).  

    ERRORS

    No errors are defined.

    The following sections are informative.  

    EXAMPLES

    None.  

    APPLICATION USAGE

    This function was removed from the final ISO/IEC 9899:1990/Amendment 1:1995 (E), and the return value for a non-printable wide character is not specified.  

    RATIONALE

    None.  

    FUTURE DIRECTIONS

    None.  

    SEE ALSO

    wcwidth() , the Base Definitions volume of IEEE Std 1003.1-2001, Section 3.103, Column Position, <wchar.h>  

    COPYRIGHT

    Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    EXAMPLES
    APPLICATION USAGE
    RATIONALE
    FUTURE DIRECTIONS
    SEE ALSO
    COPYRIGHT


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