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.
CONFORMING TO C99, POSIX.1-2001.
SEE ALSO mbtowc(3)
NOTES The behaviour of btowc() depends on the LC_CTYPE category of the cur- rent 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 the function mbtowc() instead.
GNU 1999-07-25 BTOWC(3)