5 POSIX specification:@* @url{http://www.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, IRIX 5.3, Solaris 2.6, mingw, Interix 3.5.
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 AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
26 accommodate all Unicode characters.