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Date: Thu, 29 Feb 1996 12:19:36 -0800 (PST)
From: John Gerard Malecki <johnm@vlibs.com>
Message-Id: <199602292019.MAA03081@owl.vlibs.com>
To: caml-list@pauillac.inria.fr
Subject: Calling ioctl_ptr
Organization: VLSI Libraries Incorporated
Sender: weis


Bonjour,

I need to explicitly manipulate modem/rs-232 control lines on a 32 bit
sun-0s4.1 system.  I was going to invoke ioctl_ptr to do the job.

The first argument to ioctl_ptr is an int.  The bits which determine a
modem control line request are 30 and 31.  Is there a trick I can use
to set only bit 30 and not 31 and vice-versa?

If no trick is available I will write my own
	ioctlx_ptr: file_descr -> string -> string -> int

-cheers