NAME
mbsinit —
determine conversion object status
SYNOPSIS
#include
<wchar.h>
int mbsinit(const mbstate_t *ps);
DESCRIPTION
[CX] 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.1-2008 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
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
No errors are defined.
EXAMPLES
None.
APPLICATION USAGE
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 setting.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
mbrlen(3), mbrtowc(3), mbsrtowcs(3), wcrtomb(3), wcsrtombs(3)
XBD <wchar.h>
CHANGE HISTORY
First released in Issue 5. Included for alignment with ISO/IEC 9899/AMD1:1995 (“ISO C90, Amendment 1”) (E).