Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!samsung!munnari.oz.au!metro!suphys.physics.su.OZ.AU!glenn From: glenn@suphys.physics.su.OZ.AU (Glenn Geers) Newsgroups: comp.sys.intel Subject: 80387 computation (how to question) Message-ID: <1991Jun19.023041.25008@metro.ucc.su.OZ.AU> Date: 19 Jun 91 02:30:41 GMT Sender: news@metro.ucc.su.OZ.AU Reply-To: glenn@suphys.physics.su.OZ.AU (Glenn Geers) Organization: School of Physics, Uni of Sydney, Australia. Lines: 23 Nntp-Posting-Host: physics.su.oz.au Hi, I've written most of the UNIX math library routines in 386/387 assembler in order to get more bang for my buck. However, there is one that has eluded me so far (at least efficiently) and thats exp(x)-1. The 387 has an instruction for doing 2^x - 1 but I can't see a neat way of scaling the result or prescaling the input. Anyone know how? Thanks in adavnce, Glenn -- ___________________________________________________________________________ Glenn Geers | "So when it's over, | we're back to people. Department of Theoretical Physics | Just to prove that human touch The University of Sydney | can have no equal." Sydney NSW 2006 Australia | - Basia Trzetrzelewska, 'Prime Time TV' | Phone: +61 2 692-3241 (voice) |_________________________________________ +61 2 660-2903 (fax) | | glenn@qed.physics.su.oz.au | #include | ----------------------------------------------------------------------------