Abs

Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference

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ID 790148

Date 3/22/2024

Version

Public

Visible to Intel only — GUID: GUID-A6FF6990-8C18-422A-8BCD-4B1C0DFCBC49

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Abs

Computes absolute values of vector elements.

Syntax

IppStatus ippsAbs_16s(const Ipp16s* pSrc, Ipp16s* pDst, int len);

IppStatus ippsAbs_32s(const Ipp32s* pSrc, Ipp32s* pDst, int len);

IppStatus ippsAbs_32f(const Ipp32f* pSrc, Ipp32f* pDst, int len);

IppStatus ippsAbs_64f(const Ipp64f* pSrc, Ipp64f* pDst, int len);

IppStatus ippsAbs_16s_I(Ipp16s* pSrcDst, int len);

IppStatus ippsAbs_32s_I(Ipp32s* pSrcDst, int len);

IppStatus ippsAbs_32f_I(Ipp32f* pSrcDst, int len);

IppStatus ippsAbs_64f_I(Ipp64f* pSrcDst, int len);

Include Files

ipps.h

Domain Dependencies

Headers: ippcore.h, ippvm.h

Libraries: ippcore.lib, ippvm.lib

Parameters

pSrc	Pointer to the source vector.
pDst	Pointer to the destination vector.
pSrcDst	Pointer to the source and destination vector for in-place operations.
len	Number of elements in the vector.

Description

This function computes the absolute values of each element of the vector pSrc and stores the result in pDst. The in-place flavors of ippsAbs compute the absolute values of each element of the vector pSrcDst and store the result in pSrcDst.

To compute the absolute values of complex data, use the function ippsMagnitudeippsMagnitude.

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.

Example

Abs:

/*******************************************************************************
* Copyright 2015 Intel Corporation.
*
*
* This software and the related documents are Intel copyrighted materials, and your use of them is governed by
* the express license under which they were provided to you ('License'). Unless the License provides otherwise,
* you may not use, modify, copy, publish, distribute, disclose or transmit this software or the related
* documents without Intel's prior written permission.
* This software and the related documents are provided as is, with no express or implied warranties, other than
* those that are expressly stated in the License.
*******************************************************************************/

#include <stdio.h>
#include "ipp.h"

/* Next two defines are created to simplify code reading and understanding */
#define EXIT_MAIN exitLine:                                  /* Label for Exit */
#define check_sts(st) if((st) != ippStsNoErr) goto exitLine; /* Go to Exit if Intel(R) Integrated Performance Primitives (Intel(R) IPP) function returned status different from ippStsNoErr */

/* Results of ippMalloc() are not validated because Intel(R) IPP functions perform bad arguments check and will return an appropriate status  */

int main()
{
    int len = 32;
    int i;
    Ipp64f *pSrc = ippsMalloc_64f(len * sizeof(Ipp64f));
    Ipp64f *pDst = ippsMalloc_64f(len * sizeof(Ipp64f));
    IppStatus status;

    printf("\n\nSource vector\n");
    for (i = 0; i < len; i++)
    {
        pSrc[i] = 10 - i;
        printf("%.0f; ", pSrc[i]);
    }

    check_sts(status = ippsAbs_64f(pSrc, pDst, len));

    printf("\n\nResult\n");
    for (i = 0; i < len; i++) printf("%.0f; ", pDst[i]);
    printf("\n\n");

EXIT_MAIN
    ippsFree(pSrc);
    ippsFree(pDst);
    printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
    return (int)status;
}

Abs_I:

/*******************************************************************************
* Copyright 2015 Intel Corporation.
*
*
* This software and the related documents are Intel copyrighted materials, and your use of them is governed by
* the express license under which they were provided to you ('License'). Unless the License provides otherwise,
* you may not use, modify, copy, publish, distribute, disclose or transmit this software or the related
* documents without Intel's prior written permission.
* This software and the related documents are provided as is, with no express or implied warranties, other than
* those that are expressly stated in the License.
*******************************************************************************/

#include <stdio.h>
#include "ipp.h"

/* Next two defines are created to simplify code reading and understanding */
#define EXIT_MAIN exitLine:                                  /* Label for Exit */
#define check_sts(st) if((st) != ippStsNoErr) goto exitLine; /* Go to Exit if Intel(R) Integrated Performance Primitives (Intel(R) IPP) function returned status different from ippStsNoErr */

/* Results of ippMalloc() are not validated because Intel(R) IPP functions perform bad arguments check and will return an appropriate status  */

int main()
{
    int len = 32;
    int i;
    Ipp64f *pSrcDst = ippsMalloc_64f(len * sizeof(Ipp64f));
    IppStatus status;

    printf("\n\nSource vector\n");
    for ( i= 0; i < len; i++)
    {
        pSrcDst[i] = 10 - i;
        printf("%.0f; ", pSrcDst[i]);
    }

    check_sts(status = ippsAbs_64f_I(pSrcDst, len));

    printf("\n\nResult\n");
    for (i = 0; i < len; i++) printf("%.0f; ", pSrcDst[i]);
    printf("\n\n");

EXIT_MAIN
    ippsFree(pSrcDst);
    printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
    return (int)status;
}

Parent topic: Arithmetic Functions

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