> > Hello! > > > But you can't get rid of: > > z + (z < sum) > > which is the real bottleneck. Perhaps this doesn't cost much > > on high end CPUs but it sure does on embedded CPUs > > Why should it be? It can be compiled as a sequence of "add with carry" > instructions, can't it?
Yes, but have you seen gcc do that? I havn't, perhaps gcc has become smarter
recently?
Jocke
