Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!jarthur!nntp-server.caltech.edu!pooh!madler From: madler@pooh.caltech.edu (Mark Adler) Newsgroups: comp.sys.next Subject: Re: 68040 Math / Why so much system time? Message-ID: <1991Feb18.092057.28199@nntp-server.caltech.edu> Date: 18 Feb 91 09:20:57 GMT References: <712@chiton.ucsd.edu> <1331@toaster.SFSU.EDU> <1991Feb18.004252.6932@nntp-server.caltech.edu> Sender: news@nntp-server.caltech.edu Organization: California Institute of Technology, Pasadena Lines: 13 Nntp-Posting-Host: pooh Bing Chen notes: >> The only difference between 2.0 compiler and 1.0 compiler that caused some >> performance increase is that 2.0 compiler no longer generates fintrzx >> instructions which is terribly slow on 68040. Though the compiler no longer generates it, methinks it still lurks in the library, since floor() on the 040 takes twice as long as it does on the 030 (both running 2.0). Mark Adler madler@pooh.caltech.edu