Real

Returns the real part of a complex vector in a second vector.

Syntax

IppStatus ippsReal_16sc(const Ipp16sc* pSrc, Ipp16s* pDstRe, int len);

IppStatus ippsReal_32fc(const Ipp32fc* pSrc, Ipp32f* pDstRe, int len);

IppStatus ippsReal_64fc(const Ipp64fc* pSrc, Ipp64f* pDstRe, int len);

Include Files

ipps.h

Domain Dependencies

Headers: ippcore.h, ippvm.h

Libraries: ippcore.lib, ippvm.lib

Parameters

pSrc	Pointer to the complex source vector.
pDstRe	Pointer to the destination vector with real parts.
len	Number of elements in the vector.

Description

This function returns the real part of the complex vector pSrc in the vector pDstRe.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when the pDstRe or pSrc pointer is NULL.
ippStsSizeErr	Indicates an error when len is less than or equal to zero.

Example

/*******************************************************************************
* 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® Integrated Primitives (Intel® IPP) function returned status different from ippStsNoErr */

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

int main()
{
    Ipp32fc pSrc[5] = { { 1.2, 3.2 }, { 0.0, 0.3 }, { 4.3, 6.7 }, { 4.2, 0.0 }, { 1.2, 1.2 } };
    Ipp32f pDstIm[5];
    IppStatus status;
    int i;

    printf("\nSource vector\n");
    for (i = 0; i < 5; i++) printf("%.1f, %.1f; ", pSrc[i].re, pSrc[i].im);

    check_sts(status = ippsReal_32fc(pSrc, pDstIm, 5));

    printf("\nResult values vector\n");
    for (i = 0; i < 5; i++) printf("%.1f ", pDstIm[i]);

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