Sqr

Performs element by element squaring of the vector.

Syntax

IppStatus ippsSqr_32f_A24 (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);

IppStatus ippsSqr_64f_A53 (const Ipp64f* pSrc, Ipp64f* pDst, Ipp32s len);

Parameters

pSrc	Pointer to the source vector.
pDst	Pointer to the destination vector.
len	Number of elements in the vectors.

Description

The function ippsSqr is declared in the ippvm.h file. This function performs element by element squaring of the vector pSrc, and stores the result in the corresponding element of pDst.

For single precision data:

function flavor ippsSqr_32f_A24 guarantees 24 correctly rounded bits of significand, including the implied bit, with the maximum guaranteed error within 1 ulp.

For double precision data:

function flavor ippsSqr_64f_A53 guarantees 53 correctly rounded bits of significand, including the implied bit, with the maximum guaranteed error within 1 ulp.

The computation is performed as follows:

pDst[n] = (pSrc[n])², 0 ≤ n < len.

The example below shows how to use the function ippsSqr.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when pSrc or pDst pointer is NULL.
ippStsSizeErr	Indicates an error when len is less than or equal to 0.

Using ippsSqr Function

IppStatus ippsSqr_32f_A24_sample(void)

const Ipp32f x[4] = {+4.885, -0.543, -3.809, -4.953};

Ipp32f  y[4];

	IppStatus st = ippsSqr_32f_A24( x, y, 4 );

	printf(" ippsSqr_32f_A24:\n");

	printf(" x = %+.3f %+.3f %+.3f %+.3f \n", x[0], x[1], x[2], x[3]);

	printf(" y = %+.3f %+.3f %+.3f %+.3f \n", y[0], y[1], y[2], y[3]);

	return st;

Output results:

 ippsSqr_32f_A24:

 x = +4.885 -0.543 -3.809 -4.953

 y = +23.863 +0.295 +14.508 +24.532