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- Newsgroups: comp.unix.bsd
- Path: sparky!uunet!darwin.sura.net!uvaarpa!cv3.cv.nrao.edu!laphroaig!cflatter
- From: cflatter@nrao.edu (Chris Flatters)
- Subject: Re: 386BSD-0.1/BRLCAD4.0 benchmark -- poor floa
- Message-ID: <1992Jul29.152914.2508@nrao.edu>
- Sender: news@nrao.edu
- Reply-To: cflatter@nrao.edu
- Organization: NRAO
- References: <l7ctu0INN880@neuro.usc.edu>
- Date: Wed, 29 Jul 1992 15:29:14 GMT
- Lines: 21
-
- In article l7ctu0INN880@neuro.usc.edu, merlin@neuro.usc.edu (merlin) writes:
- >It looks like the floating point processor is used for simple floating
- >point operations (+, -, /, *) but not for higher functions -- these go
- >to /usr/src/lib/libm/ieee/support.c where they get emulated (ie _sqrt)
- >very slowly. Perhaps someone has a redistributable i386 library which
- >could be plugged in place of the default 4.3BSD mathematics library.
- >
- >This is likely why BRLCAD 4.0 runs correctly but very slowly at the
- >present time. Any help or suggestions which would fix this problem
- >would be very much appreciated.
- >
- >Does gcc 2.2 actually use 80387 inline code for transcedental functions?
-
- No. I just looked :-(. (Unless it is very well hidden).
-
- It could probably be made to though. There appears to be some support for
- inlining transcendental functions for the Moto 68881.
-
- Chris Flatters
- cflatter@nrao.edu
-
-