hpux man page for fileno

fileno(3S)																fileno(3S)

NAME
       fileno() - map stream pointer to file descriptor

SYNOPSIS
   Obsolescent Interfaces
DESCRIPTION
       returns the integer file descriptor associated with the named stream; see open(2).

       The following symbolic values in define the file descriptors associated with and when a program is started :

	      Value of zero for standard input,
	      Value of 1 for standard output,
	      Value of 2 for standard error,

   Obsolescent Interfaces
       map stream pointer to file descriptor

APPLICATION USAGE
       is an obsolescent interface supported only for compatibility with existing DCE applications. New multithreaded applications should use

RETURN VALUE
       Upon error, return -1.

SEE ALSO
       open(2), flockfile(3S), fopen(3S), thread_safety(5).

STANDARDS CONFORMANCE
																	fileno(3S)