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@node wctob
@section @code{wctob}
@findex wctob
POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/wctob.html}
Gnulib module: wctob
Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Minix 3.1.8, HP-UX 11.00, mingw.
@item
This function clobbers caller-owned registers on some platforms:
Cygwin 1.7.5.
@item
This function does not work on some platforms:
Solaris 9.
@item
This function is missing a declaration on some platforms:
IRIX 6.5.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and
therefore cannot accommodate all Unicode characters.
However, the Gnulib function @code{c32tob}, provided by Gnulib module
@code{c32tob}, operates on 32-bit wide characters and therefore does not have
this limitation.
@end itemize
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