topic CCE format for complex numbers in Intel® oneAPI Math Kernel Library

CCE format for complex numbers

kup__benny — Fri, 07 Sep 2018 10:28:26 GMT

Hello

I want to use intel's mkl fft functions.

Now, according to this the output of real to complex transform is in CCE format,

the problem is that I can't find a description of this format anywhere , I can only find this which describes other formats (e.g., CCS, PERM, etc.)

Apperciate any help

It took a bit of searching to

mecej4 — Fri, 07 Sep 2018 11:24:39 GMT

It took a bit of searching to find the following link:

https://software.intel.com/en-us/mkl-developer-reference-c-dfti-complex-storage-dfti-real-storage-dfti-conjugate-even-storage#CONJUGATE_EVEN_STORAGE

Does that help? Is it enough?

Quote:mecej4 wrote:

kup__benny — Fri, 07 Sep 2018 11:52:00 GMT

mecej4 wrote:

It took a bit of searching to find the following link:

https://software.intel.com/en-us/mkl-developer-reference-c-dfti-complex-...

Does that help? Is it enough?

Thanks for your prompt response but I have already looked in that link and could not find the defintion for the CCE format.

Hi Benny,

Ying_H_Intel — Tue, 11 Sep 2018 02:20:52 GMT

Hi Benny,

Please read the topic: https://software.intel.com/en-us/forums/intel-math-kernel-library/topic/737334
in simple words, the CCE format is same CCS when 1-D FFT.

and the CCE format is like the formula: use the default order of complex value which store half of the FFT conjugate result .

https://software.intel.com/en-us/mkl-developer-reference-c-dfti-complex-storage-dfti-real-storage-dfti-conjugate-even-storage

Best Regards,
Ying