mbsinit(3p) — Linux manual page


MBSINIT(3P)             POSIX Programmer's Manual            MBSINIT(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

       mbsinit — determine conversion object status

SYNOPSIS         top

       #include <wchar.h>

       int mbsinit(const mbstate_t *ps);

DESCRIPTION         top

       The functionality described on this reference page is aligned
       with the ISO C standard. Any conflict between the requirements
       described here and the ISO C standard is unintentional. This
       volume of POSIX.1‐2017 defers to the ISO C standard.

       If ps is not a null pointer, the mbsinit() function shall
       determine whether the object pointed to by ps describes an
       initial conversion state.

RETURN VALUE         top

       The mbsinit() function shall return non-zero if ps is a null
       pointer, or if the pointed-to object describes an initial
       conversion state; otherwise, it shall return zero.

       If an mbstate_t object is altered by any of the functions
       described as ``restartable'', and is then used with a different
       character sequence, or in the other conversion direction, or with
       a different LC_CTYPE category setting than on earlier function
       calls, the behavior is undefined.

ERRORS         top

       No errors are defined.

       The following sections are informative.

EXAMPLES         top



       The mbstate_t object is used to describe the current conversion
       state from a particular character sequence to a wide-character
       sequence (or vice versa) under the rules of a particular setting
       of the LC_CTYPE category of the current locale.

       The initial conversion state corresponds, for a conversion in
       either direction, to the beginning of a new character sequence in
       the initial shift state. A zero valued mbstate_t object is at
       least one way to describe an initial conversion state. A zero
       valued mbstate_t object can be used to initiate conversion
       involving any character sequence, in any LC_CTYPE category

RATIONALE         top




SEE ALSO         top

       mbrlen(3p), mbrtowc(3p), mbsrtowcs(3p), wcrtomb(3p),

       The Base Definitions volume of POSIX.1‐2017, 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 at http://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, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group               2017                       MBSINIT(3P)

Pages that refer to this page: wchar.h(0p)freopen(3p)mbrlen(3p)mbrtowc(3p)mbsrtowcs(3p)wcrtomb(3p)wcsrtombs(3p)