5 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/wctob.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 clobbers caller-owned registers on some platforms:
18 This function does not work on some platforms:
21 This function is missing a declaration on some platforms:
25 Portability problems not fixed by Gnulib:
28 On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and
29 therefore cannot accommodate all Unicode characters.
30 However, the Gnulib function @code{c32tob}, provided by Gnulib module
31 @code{c32tob}, operates on 32-bit wide characters and therefore does not have