October 6th, 2010, 7:14 am
QuoteOriginally posted by: AVtwhat are your "specifications"? you kept it a bit vague (intentionally?)for 'fast' one could always glance what the gaming/visual guys suggest,for 'compact' for those engineers around embedded systems,for 'correct' (but poor) for 'ancients' before IEEE normingsfor correct and not poor -s.th. like Moshier's cephes or SUN as approach Good list.For some values of z, you can get good approximations to exp(-z) by taking rational approximation that are 13 times faster than normal. And the type of application will warrant the kind of speedup that is necessary. At some stage you hit some equivalent of Amdahl's law.
Last edited by
Cuchulainn on October 5th, 2010, 10:00 pm, edited 1 time in total.