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I'm currently doing my bachelor's thesis in electronics. While reading an article, I stumbled upon the sentence "The FPU is based on a PCS accumulator...".

What does PCS stand for? I can't find any information on it.

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PCS is partial carry-save accumulator.

From the cited paper:
enter image description here

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"It is based on a Partial Carry-Save (PCS) accumulator which aggregates the 48 bit multiplication result".

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