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

ID 790148
Date 3/22/2024
Public
Document Table of Contents

Imag

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

Syntax

IppStatus ippsImag_16sc(const Ipp16sc* pSrc, Ipp16s* pDstIm, int len);

IppStatus ippsImag_32fc(const Ipp32fc* pSrc, Ipp32f* pDstIm, int len);

IppStatus ippsImag_64fc(const Ipp64fc* pSrc, Ipp64f* pDstIm, 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.

pDstIm

Pointer to the destination vector with imaginary parts.

len

Number of elements in the vector.

Description

This function returns the imaginary part of a complex vector pSrc in the vector pDstIm.

Return Values

ippStsNoErr

Indicates no error.

ippStsNullPtrErr

Indicates an error when the pDstIm 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(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()
{
    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 = ippsImag_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;
}