In article <sxdfza4qc4q.fsf@edgedsp4.rtp.ericsson.se> Raymond Toy <toy@rtp.ericsson.se> writes:
...
> But I do still think we when we compute estimates of costs, MIPS,
> cycles, whatever, we tend to ignore things like table lookups,
> additions, etc, and assume they are free, compared to multiplication,
> when in fact they can be even more expensive.
Well, if somebody does that he is wrong. There are very many processors
(and not only DSP's) where a floating point multiply takes as many
cycles as a floating point addition. Vector processors are of this
kind. And the first one I did use with this feature was a CDC Cyber,
back in the seventies.
--
dik t. winter, cwi, kruislaan 413, 1098 sj amsterdam, nederland, +31205924131
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