Example 2: Single- and double-precision variants of the IPP vector summation API.

(a) 
IppStatus ippsSum_32f(const Ipp32f *pSrc, 
                         int len, 
                         Ipp32f* pSum, 
                         IppHintAlgorithm hint);
(b) 
IppStatus ippsSum_64f(const Ipp64f *pSrc, int len, Ipp64f* pSum);