@node fwide @section @code{fwide} @findex fwide POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/fwide.html} Gnulib module: --- Portability problems fixed by Gnulib: @itemize @end itemize Portability problems not fixed by Gnulib: @itemize @item This function is missing on some platforms: Minix 3.1.8, HP-UX 11.00, IRIX 6.5, Cygwin 1.5.x, MSVC 14. @item On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and therefore cannot accommodate all Unicode characters. @item @code{fwide} is not guaranteed to be able to change a file stream's mode to a different mode than the current one. @end itemize