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wcswidth(3p) — Linux manual page

WCSWIDTH(3P)            POSIX Programmer's ManualWCSWIDTH(3P)

PROLOG        top

       This manual page is part of the POSIX Programmer's Manual.  The       Linux implementation of this interface may differ (consult the       corresponding Linux manual page for details of Linux behavior), or       the interface may not be implemented on Linux.

NAME        top

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

SYNOPSIS        top

       #include <wchar.h>       int wcswidth(const wchar_t *pwcs, size_tn);

DESCRIPTION        top

       Thewcswidth() function shall determine the number of column       positions required forn wide-character codes (or fewer thann       wide-character codes if a null wide-character code is encountered       beforen wide-character codes are exhausted) in the string pointed       to bypwcs.

RETURN VALUE        top

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

ERRORS        top

       No errors are defined.The following sections are informative.

EXAMPLES        top

       None.

APPLICATION USAGE        top

       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        top

       None.

FUTURE DIRECTIONS        top

       None.

SEE ALSO        top

wcwidth(3p)       The Base Definitions volume of POSIX.1‐2017,Section 3.103,ColumnPosition,wchar.h(0p)

COPYRIGHT        top

       Portions of this text are reprinted and reproduced in electronic       form from IEEE Std 1003.1-2017, Standard for Information       Technology -- Portable Operating System Interface (POSIX), The       Open Group Base Specifications Issue 7, 2018 Edition, Copyright       (C) 2018 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 athttp://www.opengroup.org/unix/online.html .       Any typographical or formatting errors that appear in this page       are most likely to have been introduced during the conversion of       the source files to man page format. To report such errors, seehttps://www.kernel.org/doc/man-pages/reporting_bugs.html .IEEE/The Open Group                2017WCSWIDTH(3P)

Pages that refer to this page:wchar.h(0p), wcwidth(3p)

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