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btowc(3)

BTOWC(3)                   Linux Programmer's Manual                  BTOWC(3)

NAME
       btowc - convert single byte to wide character

SYNOPSIS
       #include <wchar.h>

       wint_t btowc(int c);

DESCRIPTION
       The btowc() function converts c, interpreted as a multibyte sequence of
       length  1, starting in the initial shift state, to a wide character and
       returns it.  If c is EOF or not a valid multibyte sequence of length 1,
       the btowc() function returns WEOF.

RETURN VALUE
       The btowc() function returns the wide character converted from the sin‐
       gle byte c.  If c is EOF or not a valid multibyte sequence of length 1,
       it returns WEOF.

ATTRIBUTES
       For an explanation of the terms  used  in  this  section,  see  attrib‐
       utes(7).  allbox; lb lb lb l l l.  Interface Attribute Value T{ btowc()
       T}   Thread safety   MT-Safe

CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C99.

NOTES
       The behavior of btowc() depends on the LC_CTYPE category of the current
       locale.

       This  function  should  never  be used.  It does not work for encodings
       which have state, and unnecessarily  treats  single  bytes  differently
       from multibyte sequences.  Use either mbtowc(3) or the thread-safe mbr‐
       towc(3) instead.

SEE ALSO
       mbrtowc(3), mbtowc(3), wctob(3)

COLOPHON
       This  page  is  part of release 5.02 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest     version     of     this    page,    can    be    found    at
       https://www.kernel.org/doc/man-pages/.

GNU                               2015-08-08                          BTOWC(3)
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