|Re: [eigen] vectorization of complex|
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Am 20.07.2010 11:47, schrieb Gael Guennebaud:
In another threat matlab was "blamed" to use separate matrices for real
and imaginary parts instead of one matrix of complex coeff.
[...] but 3 swizzling and one "bitwise or" operation to negate
some coefficients. This make it far to be optimal. In particular
swizzling is extremely costly. Moreover all these "complex" operations
requires many additional registers to store the temporaries. [...]
How do you think, this would compete?