Intel® Integrated Performance Primitives Developer Guide and Reference

ID 790148
Date 11/07/2023
Public

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Document Table of Contents

Norm

Computes the C, L1, L2, or L2Sqr norm of a vector.

Syntax

IppStatus ippsNorm_Inf_32f(const Ipp32f* pSrc, int len, Ipp32f* pNorm);

IppStatus ippsNorm_Inf_64f(const Ipp64f* pSrc, int len, Ipp64f* pNorm);

IppStatus ippsNorm_Inf_16s32f(const Ipp16s* pSrc, int len, Ipp32f* pNorm);

IppStatus ippsNorm_Inf_32fc32f(const Ipp32fc* pSrc, int len, Ipp32f* pNorm);

IppStatus ippsNorm_Inf_64fc64f(const Ipp64fc* pSrc, int len, Ipp64f* pNorm);

IppStatus ippsNorm_L1_32f(const Ipp32f* pSrc, int len, Ipp32f* pNorm);

IppStatus ippsNorm_L1_64f(const Ipp64f* pSrc, int len, Ipp64f* pNorm);

IppStatus ippsNorm_L1_16s32f(const Ipp16s* pSrc, int len, Ipp32f* pNorm);

IppStatus ippsNorm_L1_32fc64f(const Ipp32fc* pSrc, int len, Ipp64f* pNorm);

IppStatus ippsNorm_L1_64fc64f(const Ipp64fc* pSrc, int len, Ipp64f* pNorm);

IppStatus ippsNorm_L2_32f(const Ipp32f* pSrc, int len, Ipp32f* pNorm);

IppStatus ippsNorm_L2_64f(const Ipp64f* pSrc, int len, Ipp64f* pNorm);

IppStatus ippsNorm_L2_16s32f(const Ipp16s* pSrc, int len, Ipp32f* pNorm);

IppStatus ippsNorm_L2_32fc64f(const Ipp32fc* pSrc, int len, Ipp64f* pNorm);

IppStatus ippsNorm_L2_64fc64f(const Ipp64fc* pSrc, int len, Ipp64f* pNorm);

IppStatus ippsNorm_L2Sqr_16s64s_Sfs(const Ipp16s* pSrc, int len, Ipp64s* pNorm, int scaleFactor);

IppStatus ippsNorm_L2Sqr_16s64s_Sfs(const Ipp16s* pSrc, int len, Ipp64s* pNorm, int scaleFactor);

IppStatus ippsNorm_Inf_16s32s_Sfs(const Ipp16s* pSrc, int len, Ipp32s* pNorm, int scaleFactor);

IppStatus ippsNorm_L1_16s32s_Sfs(const Ipp16s* pSrc, int len, Ipp32s* pNorm, int scaleFactor);

IppStatus ippsNorm_L1_16s64s_Sfs(const Ipp16s* pSrc, int len, Ipp64s* pNorm, int scaleFactor);

IppStatus ippsNorm_L2_16s32s_Sfs(const Ipp16s* pSrc, int len, Ipp32s* pNorm, int scaleFactor);

Include Files

ipps.h

Domain Dependencies

Headers: ippcore.h, ippvm.h

Libraries: ippcore.lib, ippvm.lib

Parameters

pSrc

Pointer to the source vector.

pNorm

Pointer to the output result.

len

Number of elements in the vector.

scaleFactor

Scale factor, refer to Integer Scaling.

Description

This function computes the C, L1, L2, or L2Sqr norm of the source vector pSrc and stores the result in pNorm.

ippsNorm_Inf.The function ippsNorm_Inf computes the C norm defined by the formula:



ippsNorm_L1. The function ippsNorm_L1 computes the L1 norm defined by the formula:



ippsNorm_L2. The function ippsNorm_L2 computes the L2 norm defined by the formula:



ippsNorm_L2Sqr. The function ippsNorm_L2Sqr computes the L2Sqr norm defined as square of the L2 norm.

Functions with Sfs suffixes perform scaling of the result value in accordance with the scaleFactor value.

Return Values

ippStsNoErr

Indicates no error.

ippStsNullPtrErr

Indicates an error when the pSrc or pNorm pointer is NULL.

ippStsSizeErr

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