Computes integer value rounded to nearest for each vector element.

Syntax

IppStatus ippsRound_32f (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);

IppStatus ippsRound_64f (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 computes a rounded to the nearest integer value for each element of the vector pSrc, and stores the result in the corresponding element of the vector pDst. Halfway values, that is, 0.5, -1.5, and the like, are rounded off away from zero, that is, 0.5 -> 1, -1.5 -> -2, and so on.

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 ippsRound.

IppStatus ippsRound_32f_ sample(void)
{
    const Ipp32f x[4] = {-1.883, -0.265, 0.176, 1.752};
    Ipp32f y[4];
    IppStatus st = ippsRound_32f ( x, y, 4 );
    printf(" ippsRound_32f:\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:
ippsRound_32f:
x = -1.883 -0.265 0.176 1.752
y = -2.000  0.000 0.000 2.000
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