topic Quote:mecej4 wrote: in Intel® oneAPI Math Kernel Library

How to rotate array in mkl

caden_g_ — Thu, 08 Sep 2016 05:48:25 GMT

int arrA[]={1,2,3,..........100};

I want to get arrB={100,.......3,2,1};

What's the fastest fun?

If I want to get arrA={100,..

caden_g_ — Thu, 08 Sep 2016 05:52:55 GMT

If I want to get arrA={100,.......3,2,1},too;

What's the fastest fun?

MKL doesn't have such

Gennady_F_Intel — Fri, 09 Sep 2016 08:28:36 GMT

MKL doesn't have such functions, but you may have a look at the existing IPP functionality ( ippsFlip_*,* or ippsSortAscend/Descend ).

https://software.intel.com/en-us/node/502149.

C++ reverse_copy() is

TimP — Fri, 09 Sep 2016 11:10:54 GMT

C++ reverse_copy() is optimized for the designated architecture by Intel C++ and g++. A plain loop would work as well.

By the way, note that "rotate

mecej4 — Fri, 09 Sep 2016 11:39:00 GMT

By the way, note that "Rotate" is not an apt word for what you want to do. "Reverse", "Reflect" or the more flippant "Flip" would be more appropriate.

Quote:Gennady Fedorov (Intel)

caden_g_ — Mon, 19 Sep 2016 10:11:14 GMT

Gennady Fedorov (Intel) wrote:

MKL doesn't have such functions, but you may have a look at the existing IPP functionality ( ippsFlip_*,* or ippsSortAscend/Descend ).

https://software.intel.com/en-us/node/502149.

ok,thank you

Quote:Tim P. wrote:

caden_g_ — Mon, 19 Sep 2016 10:20:42 GMT

Tim P. wrote:

C++ reverse_copy() is optimized for the designated architecture by Intel C++ and g++. A plain loop would work as well.

ok thank you

Quote:mecej4 wrote:

caden_g_ — Mon, 19 Sep 2016 10:21:40 GMT

mecej4 wrote:

By the way, note that "Rotate" is not an apt word for what you want to do. "Reverse", "Reflect" or the more flippant "Flip" would be more appropriate.

yes, you are right.