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From: schmitz@fas.ri.cmu.edu (Donald Schmitz)
Newsgroups: comp.sys.m68k,comp.sources.wanted
Subject: Re: Wanted:  68881 FPU emulation library
Keywords: 68881, floating point, emulation
Message-ID: <7309@pt.cs.cmu.edu>
Date: 12 Dec 89 15:07:30 GMT
References: <426@bnrunix.UUCP>
Distribution: na
Organization: Carnegie-Mellon University, CS/RI
Lines: 16

In article <426@bnrunix.UUCP> jbh@bnrunix.UUCP (John B. Hampton) writes:
>We need the source for a 68881 FPU emulation library using F-line traps for
>the 68030.  C source is preferred, but assembler will be gratefully
>accepted.  Free/shareware, public domain, third-party, or other non-PD is
>fine.  Non-IEEE conformance (as long as the routines are FAST) is also
>acceptable.

Unfortunately I don't have such a library, but I wanted to mention that FP
librarys written for pre '020/030 CPUs aren't going to be as fast running on
the newer CPUs as they can be.  The '020 introduced a few bitfield
instructions, in particular BFFFO (bit field find first one), that make
floating point more efficient (although in assembler, its hard
to imagine a compiler using this instruction).  If you find a library, a
good check of how recent/good it is will be if BFFFO is in there.

Don