Trunc

Computes integer value rounded toward zero for each vector element.

Syntax

IppStatus ippsTrunc_32f (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);

IppStatus ippsTrunc_64f (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 ippsTrunc is declared in the ippvm.h file. This function computes an integer value rounded towards zero for each element of the vector pSrc, and stores the result in the corresponding element of the vector pDst.

The example below shows how to use the function ippsTrunc.

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 ippsTrunc Function

IppStatus ippsTrunc_32f_ sample(void)

    const Ipp32f x[4] = {-1.883, -0.265, 0.176, 1.752};

    Ipp32f y[4];

    IppStatus st = ippsTrunc_32f ( x, y, 4 );

    printf(" ippsTrunc_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:

ippsTrunc_32f:

x = -1.883 -0.265 0.176 1.752

y = -1.000 0.000 0.000 1.000