Ipp Hog output format

Hi,

I'm using ippiHOG_8u32f_C1R and there is question about output format.
As specified in documentation we must perform initialization before Hog computation with:

ippiHOGInit(const IppiHOGConfig* pConfig, IppiHOGSpec* pHOGSpec);

It takes pointer to structure IppiHOGConfig that has field:

 int   cvCompatible;  /* openCV compatible output format */

Can i find any details about difference between formats? Or may be someone could clarify that.

Thanks!