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);

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

The function ippsMaxIndx is declared in the ipps.h file. 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. The code example below demonstrates how to use the function ippiMaxIndx.

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.

Using 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