Xref: utzoo comp.sys.mac:18327 comp.sys.mac.programmer:1640
Path: utzoo!utgpu!water!watmath!clyde!att!ihnp4!poseidon!ech
From: ech@poseidon.UUCP (Edward C Horvath)
Newsgroups: comp.sys.mac,comp.sys.mac.programmer
Subject: Re: Re: LightspeedC 3.0 Review (long)
Message-ID: <455@poseidon.UUCP>
Date: 18 Jul 88 21:11:59 GMT
References: <4971@husc6.harvard.edu>
Organization: AT&T Information Systems, Lincroft, NJ
Lines: 16

> ...but between the inline generation
> of the normal arithmetic opcodes and the high-performance library ("Math881")
> that I wrote ( :-] ) you'll find that your code is plenty fast.

That's it, Rich, I'm calling you out: has it ever occurred to you that pushing
arguments onto the stack, doing a jsr, transferring arguments to the FP regs,
doing an F-trap, pulling the result back from the FP regs, doing an rts, and
popping the arguments off the stack is a bit more costly than JUST DOING THE
F-TRAP?

Plenty fast?  Perhaps.  Fast enough?  As fast as it COULD be?  Not even close.
Try running some benchmarks.  Shall we race my inline code against your
libraries for, say, a month's salary?

=Ned Horvath=
"Dare to risk confusion by the facts."