@node getprotobynumber
@section @code{getprotobynumber}
@findex getprotobynumber

POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/getprotobynumber.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:
mingw, BeOS.
@end itemize