NAME

       btowc - convert single byte to wide character

LIBRARY

       Standard C library (libc, -lc)

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 single 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 attributes(7).

       ┌───────────────────────────────────────────────────────────────┬───────────────┬─────────┐
       │Interface                                                      │ Attribute     │ Value   │
       ├───────────────────────────────────────────────────────────────┼───────────────┼─────────┤
       │btowc()                                                        │ Thread safety │ MT-Safe │
       └───────────────────────────────────────────────────────────────┴───────────────┴─────────┘

STANDARDS

       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 mbrtowc(3) instead.

SEE ALSO

       mbrtowc(3), mbtowc(3), wctob(3)