Am 22.10.19 um 05:01 schrieb J. Gareth Moreton:
mulpd %xmm0, %xmm0 { Calculates "re * re" and "im * im" simultaneously }
haddpd %xmm0, %xmm0 { Adds the above multiplications together
(horizontal add) }
Unfortunatly, those horizontal operations are normally not very efficient IIRC.
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