Re: [eigen] Array of complex numbers |

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*To*: eigen@xxxxxxxxxxxxxxxxxxx*Subject*: Re: [eigen] Array of complex numbers*From*: Francois Fayard <fayard@xxxxxxxxxxxxx>*Date*: Thu, 10 Jan 2019 23:36:04 +0100

I would never try to get gcc or clang vectorize efficiently a loop. I tend to only use Intel compilers when I want to get efficient vectorization without writing intrinsics. > On 10 Jan 2019, at 23:33, Gael Guennebaud <gael.guennebaud@xxxxxxxxx> wrote: > > hm... actually that's not that bad as clang is able to move two of the three permutations out of the loop, we only have to pay for a single extra permutation per product. With gcc, the overhead is quite significant. > > gael

**References**:**[eigen] Array of complex numbers***From:*Francois Fayard

**Re: [eigen] Array of complex numbers***From:*Gael Guennebaud

**Re: [eigen] Array of complex numbers***From:*Francois Fayard

**Re: [eigen] Array of complex numbers***From:*Gael Guennebaud

**Re: [eigen] Array of complex numbers***From:*Gael Guennebaud

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