On Tue 01/01/08 9:47 AM , "Cristea Bogdan" sent: > I use an Athlon 64 double core processor under openSuSE 10.2 (gcc > > 4.2.2). The trouble is that implementing fixed point operations in C++ > > seems to be very slow with respect to floating-point operations. I > > have hoped to find something faster. > > Ideally I would like to have a data type in C++ with all common > > operations in order to do some research with chaotic maps. > > Bogdan Which is exactly my point. The K8 Athlon has a fairly fast FPU and you're not likely to beat it in performance when using fixed point, even in assembler. Tom