Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!uunet!portal!cup.portal.com!wetter From: wetter@cup.portal.com (Pierce T Wetter) Newsgroups: comp.sys.mac.programmer Subject: Re: How to Cosine Message-ID: <23401@cup.portal.com> Date: 27 Oct 89 01:31:21 GMT References: <2157@hudson.acc.virginia.edu> <2143@draken.nada.kth.se> Organization: The Portal System (TM) Lines: 8 You want to use something called a CORDIC algorithm. If I remember correctly it uses shifts to do the divisions and multiplications by powers of two, and uses some algoritm that only requires divison and multiplication by powers of two. CORDIC is the name of the machine the algorithm was implemented for. Pierce