Developer Reference for Intel® Integrated Performance Primitives 2019
Computes rounded integer value in current rounding mode for each vector element with inexact result exception raised for each changed value.
IppStatus ippsRint_32f (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);
IppStatus ippsRint_64f (const Ipp64f* pSrc, Ipp64f* pDst, Ipp32s len);
ippvm.h
Headers: ippcore.h
Libraries: ippcore.lib
pSrc |
Pointer to the source vector. |
pDst |
Pointer to the destination vector. |
len |
Number of elements in the vectors. |
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.
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. |
The example below shows how to use the 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, y1, 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
y1 = -2.000 0.000 0.000 2.000
y2 = -1.000 0.000 0.000 1.000