5 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/btowc.html}
9 Portability problems fixed by Gnulib:
12 This function is missing on some platforms:
13 Minix 3.1.8, HP-UX 11.00, mingw.
15 This function returns WEOF for a NUL argument on some platforms:
18 This function does not return WEOF for an EOF argument on some platforms:
22 Portability problems not fixed by Gnulib:
25 On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and
26 therefore cannot accommodate all Unicode characters.
27 However, the Gnulib function @code{btoc32}, provided by Gnulib module
28 @code{btoc32}, operates on 32-bit wide characters and therefore does not have
31 In the C or POSIX locales, this function is not consistent with
32 Gnulib's @code{mbrtowc} and can return @code{WEOF}:
33 glibc 2.23, MirOS BSD #10.