fileno man page on Tru64

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fileno(3)							     fileno(3)

NAME
       fileno - Map a stream pointer to a file descriptor

SYNOPSIS
       #include <stdio.h>

       int fileno(
		FILE *stream );

LIBRARY
       Standard C Library (libc)

STANDARDS
       Interfaces  documented on this reference page conform to industry stan‐
       dards as follows:

       fileno(): XSH5.0

       Refer to the standards(5) reference page	 for  more  information	 about
       industry standards and associated tags.

PARAMETERS
       Specifies the input stream.

DESCRIPTION
       The  fileno()  function	returns the integer file descriptor associated
       with the stream pointed to by stream.

NOTES
       [Tru64 UNIX]  The fileno() function may be a macro  (depending  on  the
       compile-time  definitions used in the source). Consequently, you cannot
       use this interface where a function is necessary; for example,  a  sub‐
       routine pointer cannot point to the interface.

RETURN VALUES
       Upon  successful	 completion,  the  fileno()  macro returns the integer
       value of the file descriptor associated with the stream parameter. Oth‐
       erwise, the value -1 is returned.

SEE ALSO
       Functions:   open(2),   clearerr(3),   fdopen(3),  feof(3),  ferror(3),
       fopen(3)

       Standards: standards(5)

								     fileno(3)
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