CCE format for complex numbers

[kup__benny]

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

[mecej4]

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?

[kup__benny]

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.

[Ying_H_Intel · Accepted solution]

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