BTOWC(3)               FreeBSD Library Functions Manual               BTOWC(3)

NAME
     btowc, wctob - convert between wide and single-byte characters

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <wchar.h>

     wint_t
     btowc(int c);

     int
     wctob(wint_t c);

     #include <wchar.h>
     #include <xlocale.h>

     wint_t
     btowc_l(int c, locale_t loc);

     int
     wctob_l(wint_t c, locale_t loc);

DESCRIPTION
     The btowc() function converts a single-byte character into a
     corresponding wide character.  If the character is EOF or not valid in
     the initial shift state, btowc() returns WEOF.

     The wctob() function converts a wide character into a corresponding
     single-byte character.  If the wide character is WEOF or not able to be
     represented as a single byte in the initial shift state, wctob() returns
     EOF.

     The _l-suffixed versions take an explicit locale argument, while the non-
     suffixed versions use the current global or per-thread locale.

SEE ALSO
     mbrtowc(3), multibyte(3), wcrtomb(3)

STANDARDS
     The btowc() and wctob() functions conform to IEEE Std 1003.1-2001
     ("POSIX.1").

HISTORY
     The btowc() and wctob() functions first appeared in FreeBSD 5.0.

FreeBSD 13.1-RELEASE-p6        February 13, 2012       FreeBSD 13.1-RELEASE-p6