Rint

Computes rounded integer value in current rounding mode for each vector element with inexact result exception raised for each changed value.

Syntax

IppStatus ippsRint_32f (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);

IppStatus ippsRint_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 ippsRint is declared in the ippvm.h file. This function computes a rounded integer value in a current rounding mode for each element of the vector pSrc, and stores the result in the corresponding element of the vector pDst raising inexact result exception if the value has changed.

The example below shows how to use the ippsRint function.

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 ippsRint Function

#include <fenv.h>

void ippsRint_32f_ sample(void)

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

    Ipp32f y1[4], y2[4];

    fesetround(FE_TONEAREST);

    ippsRint_32f ( x, y2, 4 );

    fesetround(FE_TOWARDZERO);

    ippsRint_32f ( x, y2, 4 );

    printf(" ippsRint_32f:\n");

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

    printf(" y1 = %.3f %.3f %.3f %.3f \n", y1[0], y1[1], y1[2], y1[3]);

    printf(" y2 = %.3f %.3f %.3f %.3f \n", y2[0], y2[1], y2[2], y2[3]);

Output results:

ippsRint_32f:

x = -1.883 -0.265 0.176 1.752

y = -2.000  0.000 0.000 2.000

y = -1.000  0.000 0.000 1.000