Path: utzoo!utgpu!water!watmath!clyde!bellcore!faline!thumper!ulysses!andante!mit-eddie!apollo!nelson_p@apollo.uucp From: nelson_p@apollo.uucp Newsgroups: comp.sys.ibm.pc Subject: floating point speedup Message-ID: <3c623946.44e6@apollo.uucp> Date: 31 May 88 17:21:00 GMT Sender: user@apollo.uucp Lines: 17 Posted: Tue May 31 13:21:00 1988 To: comp.sys.ibm.pc@news I have an application that's very floating point-intensive. It is written in (M.S. QuickC) C and run on my Leading Edge Model 'D' XT clone. Since I don't have an 8087, the code uses the M.S. floating point emulator code. (BTW I have V1.01 which fixes the famous precision error in V1.00.) My question is this: How does the speed of the software floating point code compare with doing it with an 8087 running at the same clock speed as the CPU? I am especially interested in single-precision multiplies and divides. I need to decide if an 8087-2 will give me enough of a boost to justify its ~ $150 pricetag. Than you in advance. --Peter Nelson