Developer Reference

  • 2020
  • 07/15/2020
  • Public Content
Contents

Div

Divides the elements of two vectors.

Syntax

Case 1. Not-in-place operations on integer data.
IppStatus ippsDiv_8u_Sfs(const Ipp8u*
pSrc1
, const Ipp8u*
pSrc2
, Ipp8u*
pDst
, int
len
, int
scaleFactor
);
IppStatus ippsDiv_16u_Sfs(const Ipp16u*
pSrc1
, const Ipp16u*
pSrc2
, Ipp16u*
pDst
, int
len
, int
scaleFactor
);
IppStatus ippsDiv_16s_Sfs(const Ipp16s*
pSrc1
, const Ipp16s*
pSrc2
, Ipp16s*
pDst
, int
len
, int
scaleFactor
);
IppStatus ippsDiv_32s_Sfs(const Ipp32s*
pSrc1
, const Ipp32s*
pSrc2
, Ipp32s*
pDst
, int
len
, int
scaleFactor
);
IppStatus ippsDiv_16sc_Sfs(const Ipp16sc*
pSrc1
, const Ipp16sc*
pSrc2
, Ipp16sc*
pDst
, int
len
, int
scaleFactor
);
IppStatus ippsDiv_32s16s_Sfs(const Ipp16s*
pSrc1
, const Ipp32s*
pSrc2
, Ipp16s*
pDst
, int
len
, int
scaleFactor
);
Case 2. Not-in-place operations on floating point data.
IppStatus ippsDiv_32f(const Ipp32f*
pSrc1
, const Ipp32f*
pSrc2
, Ipp32f*
pDst
, int
len
);
IppStatus ippsDiv_64f(const Ipp64f*
pSrc1
, const Ipp64f*
pSrc2
, Ipp64f*
pDst
, int
len
);
IppStatus ippsDiv_32fc(const Ipp32fc*
pSrc1
, const Ipp32fc*
pSrc2
, Ipp32fc*
pDst
, int
len
);
IppStatus ippsDiv_64fc(const Ipp64fc*
pSrc1
, const Ipp64fc*
pSrc2
, Ipp64fc*
pDst
, int
len
);
Case 3. In-place operations on integer data.
IppStatus ippsDiv_8u_ISfs(const Ipp8u*
pSrc
, Ipp8u*
pSrcDst
, int
len
, int
scaleFactor
);
IppStatus ippsDiv_16u_ISfs(const Ipp16u*
pSrc
, Ipp16u*
pSrcDst
, int
len
, int
scaleFactor
);
IppStatus ippsDiv_16s_ISfs(const Ipp16s*
pSrc
, Ipp16s*
pSrcDst
, int
len
, int
scaleFactor
);
IppStatus ippsDiv_16sc_ISfs(const Ipp16sc*
pSrc
, Ipp16sc*
pSrcDst
, int
len
, int
scaleFactor
);
IppStatus ippsDiv_32s_ISfs(const Ipp32s*
pSrc
, Ipp32s*
pSrcDst
, int
len
, int
scaleFactor
);
Case 4. In-place operations on floating point data.
IppStatus ippsDiv_32f_I(const Ipp32f*
pSrc
, Ipp32f*
pSrcDst
, int
len
);
IppStatus ippsDiv_64f_I(const Ipp64f*
pSrc
, Ipp64f*
pSrcDst
, int
len
);
IppStatus ippsDiv_32fc_I(const Ipp32fc*
pSrc
, Ipp32fc*
pSrcDst
, int
len
);
IppStatus ippsDiv_64fc_I(const Ipp64fc*
pSrc
, Ipp64fc*
pSrcDst
, int
len
);
Include Files
ipps.h
Domain Dependencies
Headers:
ippcore.h
,
ippvm.h
Libraries:
ippcore.lib
,
ippvm.lib
Parameters
pSrc1
Pointer to the divisor vector.
pSrc2
Pointer to the dividend vector.
pDst
Pointer to the destination vector.
pSrc
Pointer to the divisor vector for in-place operations.
pSrcDst
Pointer to the source and destination vector for in-place operations.
len
Number of elements in the vector.
scaleFactor
Scale factor, refer to Integer Scaling.
Description
This function divides the elements of the
pSrc2
vector by the elements of the
pSrc1
vector , and stores the result in
pDst
.
The in-place flavors of
ippsDiv
divide the elements of the vector
pSrcDst
by the elements of the vector
pSrc
and store the result in
pSrcDst
.
Functions with
Sfs
suffixe perform scaling of the result in accordance with the
scaleFactor
value. If the output value exceeds the data range, the result is saturated.
If any of the divisor vector elements is equal to zero, the function returns a warning and continues execution with the corresponding result value. For more information see "Handling of Special Cases".
Return Values
ippStsNoErr
Indicates no error.
ippStsNullPtrErr
Indicates an error when any of the specified pointers is
NULL
.
ippStsSizeErr
Indicates an error when
len
is less than or equal to zero.
ippStsDivByZero
Indicates a warning when any of the divisor vector elements is equal to zero.

Example

Div
:
/******************************************************************************* * Copyright 2015-2020 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 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 *pDst = ippsMalloc_64f(len * sizeof(Ipp64f)); Ipp64f *pSrc1 = ippsMalloc_64f(len * sizeof(Ipp64f)); Ipp64f *pSrc2 = ippsMalloc_64f(len * sizeof(Ipp64f)); IppStatus status; printf("\n\nSource vector 1\n"); for (i = 0; i < len; i++) { pSrc1[i] = i; printf("%.0f; ", pSrc1[i]); } printf("\n\nSource vector 2\n"); for (i = 0; i < len; i++) { pSrc2[i] = 10 + i; printf("%.0f; ", pSrc2[i]); } check_sts(status = ippsDiv_64f(pSrc2, pSrc1, pDst, len)); printf("\n\nResult\n"); for (i = 0; i < len; i++) printf("%.2f; ", pDst[i]); printf("\n\n"); EXIT_MAIN ippsFree(pSrc1); ippsFree(pSrc2); ippsFree(pDst); printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status)); return (int)status; }
Div_I
:
/******************************************************************************* * Copyright 2015-2020 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 *pSrc1 = ippsMalloc_64f(len * sizeof(Ipp64f)); Ipp64f *pSrcDst = ippsMalloc_64f(len * sizeof(Ipp64f)); IppStatus status; printf("\n\nSource vector 1\n"); for (i = 0; i < len; i++) { pSrcDst[i] = i; printf("%.0f; ", pSrcDst[i]); } printf("\n\nSource vector 2\n"); for (i = 0; i < len; i++) { pSrc1[i] = 10 + i; printf("%.0f; ", pSrc1[i]); } check_sts(status = ippsDiv_64f_I(pSrc1, pSrcDst, len)); printf("\n\nResult\n"); for (i = 0; i < len; i++) printf("%.2f; ", pSrcDst[i]); printf("\n\n"); EXIT_MAIN ippsFree(pSrc1); ippsFree(pSrcDst); printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status)); return (int)status; }

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804