Add

Adds the elements of two vectors.

Syntax

Case 1. Not-in-place operations on floating point data, and integer data without scaling.

IppStatus ippsAdd_16s(const Ipp16s* pSrc1, const Ipp16s* pSrc2, Ipp16s* pDst, int len);

IppStatus ippsAdd_16u(const Ipp16u* pSrc1, const Ipp16u* pSrc2, Ipp16u* pDst, int len);

IppStatus ippsAdd_32u(const Ipp32u* pSrc1, const Ipp32u* pSrc2, Ipp32u* pDst, int len);

IppStatus ippsAdd_32f(const Ipp32f* pSrc1, const Ipp32f* pSrc2, Ipp32f* pDst, int len);

IppStatus ippsAdd_64f(const Ipp64f* pSrc1, const Ipp64f* pSrc2, Ipp64f* pDst, int len);

IppStatus ippsAdd_32fc(const Ipp32fc* pSrc1, const Ipp32fc* pSrc2, Ipp32fc* pDst, int len);

IppStatus ippsAdd_64fc(const Ipp64fc* pSrc1, const Ipp64fc* pSrc2, Ipp64fc* pDst, int len);

IppStatus ippsAdd_8u16u(const Ipp8u* pSrc1, const Ipp8u* pSrc2, Ipp16u* pDst, int len);

IppStatus ippsAdd_16s32f(const Ipp16s* pSrc1, const Ipp16s* pSrc2, Ipp32f* pDst, int len);

Case 2. Not-in-place operations on integer data with scaling.

IppStatus ippsAdd_8u_Sfs(const Ipp8u* pSrc1, const Ipp8u* pSrc2, Ipp8u* pDst, int len, int scaleFactor);

IppStatus ippsAdd_16u_Sfs(const Ipp16u* pSrc1, const Ipp16u* pSrc2, Ipp16u* pDst, int len, int scaleFactor);

IppStatus ippsAdd_16s_Sfs(const Ipp16s* pSrc1, const Ipp16s* pSrc2, Ipp16s* pDst, int len, int scaleFactor);

IppStatus ippsAdd_32s_Sfs(const Ipp32s* pSrc1, const Ipp32s* pSrc2, Ipp32s* pDst, int len, int scaleFactor);

IppStatus ippsAdd_64s_Sfs(const Ipp64s* pSrc1, const Ipp64s* pSrc2, Ipp64s* pDst, Ipp32u len, int scaleFactor);

IppStatus ippsAdd_16sc_Sfs(const Ipp16sc* pSrc1, const Ipp16sc* pSrc2, Ipp16sc* pDst, int len, int scaleFactor);

IppStatus ippsAdd_32sc_Sfs(const Ipp32sc* pSrc1, const Ipp32sc* pSrc2, Ipp32sc* pDst, int len, int scaleFactor);

Case 3. In-place operations on floating point data, and integer data without scaling.

IppStatus ippsAdd_16s_I(const Ipp16s* pSrc, Ipp16s* pSrcDst, int len);

IppStatus ippsAdd_32f_I(const Ipp32f* pSrc, Ipp32f* pSrcDst, int len);

IppStatus ippsAdd_64f_I(const Ipp64f* pSrc, Ipp64f* pSrcDst, int len);

IppStatus ippsAdd_32fc_I(const Ipp32fc* pSrc, Ipp32fc* pSrcDst, int len);

IppStatus ippsAdd_64fc_I(const Ipp64fc* pSrc, Ipp64fc* pSrcDst, int len);

IppStatus ippsAdd_16s32s_I(const Ipp16s* pSrc, Ipp32s* pSrcDst, int len);

Case 4. In-place operations on integer data with scaling.

IppStatus ippsAdd_8u_ISfs(const Ipp8u* pSrc, Ipp8u* pSrcDst, int len, int scaleFactor);

IppStatus ippsAdd_16u_ISfs(const Ipp16u* pSrc, Ipp16u* pSrcDst, int len, int scaleFactor);

IppStatus ippsAdd_16s_ISfs(const Ipp16s* pSrc, Ipp16s* pSrcDst, int len, int scaleFactor);

IppStatus ippsAdd_32s_ISfs(const Ipp32s* pSrc, Ipp32s* pSrcDst, int len, int scaleFactor);

IppStatus ippsAdd_16sc_ISfs(const Ipp16sc* pSrc, Ipp16sc* pSrcDst, int len, int scaleFactor);

IppStatus ippsAdd_32sc_ISfs(const Ipp32sc* pSrc, Ipp32sc* pSrcDst, int len, int scaleFactor);

Parameters

pSrc1, pSrc2	Pointers to the source vectors.
pDst	Pointer to the destination vector.
pSrc	Pointer to the source vector for in-place operations.
pSrcDst	Pointer to the source and destination vector for in-place operation.
len	Number of elements in the vector
scaleFactor	Scale factor, refer to Integer Scaling.

Description

The function ippsAdd is declared in the ipps.h file. This function adds the elements of the vector pSrc1 to the elements of the vector pSrc2, and stores the result in pDst.

The in-place flavors of ippsAdd add the elements of the vector pSrc to the elements of the vector pSrcDst and store the result in pSrcDst.

Functions with Sfs suffixes perform scaling of the result value in accordance with the scaleFactor value. If the output value exceeds the data range, the result becomes saturated.

The example below shows that overflow does not occur while adding big numbers due to the scaling operation.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when any of the specified pointers is NULL.
ippStsSizeErr	Indicates an error when len is less than or equal to 0.

Using the ippsAdd Function

IppStatus add(void) {
      Ipp16s x[4] = {-1, 32767, 2, 30000};
      IppStatus st = ippsAdd_16s_ISfs(x, x, 4, 1);
      printf_16s(“add =”, x, 4, st);
      return st;
}

Output: 
    add = -1 32767 2 30000