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);

Include Files

ippvm.h

Domain Dependencies

Headers: ippcore.h

Libraries: ippcore.lib

Parameters

pSrc

Pointer to the source vector.

pDst

Pointer to the destination vector.

len

Number of elements in the vectors.

Description

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.

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.

Example

The example below shows how to use the function ippsSqr.

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
For more complete information about compiler optimizations, see our Optimization Notice.