Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference
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MaxIndx
Returns the maximum value of a vector and the index of the maximum element.
Syntax
IppStatus ippsMaxIndx_16s(const Ipp16s* pSrc, int len, Ipp16s* pMax, int* pIndx);
IppStatus ippsMaxIndx_32s(const Ipp32s* pSrc, int len, Ipp32s* pMax, int* pIndx);
IppStatus ippsMaxIndx_32f(const Ipp32f* pSrc, int len, Ipp32f* pMax, int* pIndx);
IppStatus ippsMaxIndx_64f(const Ipp64f* pSrc, int len, Ipp64f* pMax, int* pIndx);
Include Files
ipps.h
Domain Dependencies
Headers: ippcore.h, ippvm.h
Libraries: ippcore.lib, ippvm.lib
Parameters
pSrc |
Pointer to the source vector. |
pMax |
Pointer to the output result. |
len |
Number of elements in the vector. |
pIndx |
Pointer to the index value of the maximum element. |
Description
This function returns the maximum value of the input vector pSrc, and stores the result in pMax. If pIndx is not a NULL pointer, the function returns the index of the maximum element and stores it in pIndx. If there are several equal maximum elements, the first index from the beginning is returned.
Return Values
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error when one of the specified pointers is NULL. |
ippStsSizeErr |
Indicates an error when len is less than or equal to 0. |
Example
The code example below demonstrates how to use the function ippsMaxIndx.
Ipp16s src[] = { 1, -2, 3, 8, -6 }; Ipp16s max; int len = 5; int indx; ippsMaxIndx_16s ( src, len, &max, &indx );
Result:
max = 8 indx = 3