IPP 9 ippiFFTGetSize_R_32f function fills pSizeInit as 0.

Hello,

I am using ippiFFTGetSize_R_32f function from IPP 9 as below in my application

int bufferSize = 0;

int pSizeInit = 0;

int pSizeSpec = 0;

IppStatus ippStat  = ippiFFTGetSize_R_32f( filterOrder(this->width) , filterOrder(this->height), IPP_FFT_DIV_INV_BY_N, ippAlgHintNone, 

&pSizeSpec, &pSizeInit, &bufferSize);

Status returned is No error but pSizeInit is 0, for others(pSizeSpec,bufferSize) the values are non-zero.They have valid values.

Please let me know if usage is correct and why pSizeInit is 0.  

Thanks,

Manoj