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filelength
==========

Syntax
------

     #include <io.h>
     
     long filelength(int fhandle);

Description
-----------

This function returns the size, in bytes, of a file whose handle is
specified in the argument FHANDLE.  To get the handle of a file opened
by fopen: or freopen:, you can use fileno: macro.         

Return Value
------------

The size of the file in bytes, or (if any error occured) -1L and ERRNO
set to a value describing the cause of the failure.

Example
-------

       printf("Size of file to which STDIN is redirected is %ld\n",
               filelength(0));