Intel® Integrated Performance Primitives Developer Guide and Reference

ID 790148
Date 11/07/2023
Public

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Document Table of Contents

SubCRev

Subtracts each element of a vector from a constant value.

Syntax

Case 1. Not-in-place operations on floating point data.

IppStatus ippsSubCRev_32f(const Ipp32f* pSrc, Ipp32f val, Ipp32f* pDst, int len);

IppStatus ippsSubCRev_64f(const Ipp64f* pSrc, Ipp64f val, Ipp64f* pDst, int len);

IppStatus ippsSubCRev_32fc(const Ipp32fc* pSrc, Ipp32fc val, Ipp32fc* pDst, int len);

IppStatus ippsSubCRev_64fc(const Ipp64fc* pSrc, Ipp64fc val, Ipp64fc* pDst, int len);

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

IppStatus ippsSubCRev_8u_Sfs(const Ipp8u* pSrc, Ipp8u val, Ipp8u* pDst, int len, int scaleFactor);

IppStatus ippsSubCRev_16u_Sfs(const Ipp16u* pSrc, Ipp16u val, Ipp16u* pDst, int len, int scaleFactor);

IppStatus ippsSubCRev_16s_Sfs(const Ipp16s* pSrc, Ipp16s val, Ipp16s* pDst, int len, int scaleFactor);

IppStatus ippsSubCRev_32s_Sfs(const Ipp32s* pSrc, Ipp32s val, Ipp32s* pDst, int len, int scaleFactor);

IppStatus ippsSubCRev_16sc_Sfs(const Ipp16sc* pSrc, Ipp16sc val, Ipp16sc* pDst, int len, int scaleFactor);

IppStatus ippsSubCRev_32sc_Sfs(const Ipp32sc* pSrc, Ipp32sc val, Ipp32sc* pDst, int len, int scaleFactor);

Case 3. In-place operations on floating point data.

IppStatus ippsSubCRev_32f_I(Ipp32f val, Ipp32f* pSrcDst, int len);

IppStatus ippsSubCRev_64f_I(Ipp64f val, Ipp64f* pSrcDst, int len);

IppStatus ippsSubCRev_32fc_I(Ipp32fc val, Ipp32fc* pSrcDst, int len);

IppStatus ippsSubCRev_64fc_I(Ipp64fc val, Ipp64fc* pSrcDst, int len);

Case 4. In-place operations on integer data.

IppStatus ippsSubCRev_8u_ISfs(Ipp8u val, Ipp8u* pSrcDst, int len, int scaleFactor);

IppStatus ippsSubCRev_16u_ISfs(Ipp16u val, Ipp16u* pSrcDst, int len, int scaleFactor);

IppStatus ippsSubCRev_16s_ISfs(Ipp16s val, Ipp16s* pSrcDst, int len, int scaleFactor);

IppStatus ippsSubCRev_32s_ISfs(Ipp32s val, Ipp32s* pSrcDst, int len, int scaleFactor);

IppStatus ippsSubCRev_16sc_ISfs(Ipp16sc val, Ipp16sc* pSrcDst, int len, int scaleFactor);

IppStatus ippsSubCRev_32sc_ISfs(Ipp32sc val, Ipp32sc* pSrcDst, int len, int scaleFactor);

Include Files

ipps.h

Domain Dependencies

Headers: ippcore.h, ippvm.h

Libraries: ippcore.lib, ippvm.lib

Parameters

val

Scalar value from which vector elements are subtracted.

pSrc

Pointer to the source vector.

pDst

Pointer to the destination vector.

pSrcDst

Pointer to the vector whose elements are to be subtracted from the value val in case of the in-place operation. The destination vector which stores the result of the subtraction val - pSrcDst[n].

len

Number of elements in the vector

scaleFactor

Scale factor, refer to Integer Scaling.

Description

This function subtracts each element of the vector pSrc from a value val and stores the result in pDst.

The in-place flavors of ippsSubCRev subtract each element of the vector pSrcDst from a value val 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.

Return Values

ippStsNoErr

Indicates no error.

ippStsNullPtrErr

Indicates an error when the pSrc, pDst, or pSrcDst pointer is NULL.

ippStsSizeErr

Indicates an error when len is less than or equal to 0.