Modf

Computes truncated integer value and remaining fraction part for each vector element.

Syntax

IppStatus ippsModf_32f (const Ipp32f* pSrc, Ipp32f* pDst1, Ipp32f* pDst2, Ipp32s len);

IppStatus ippsModf_64f (const Ipp64f* pSrc, Ipp64f* pDst1, Ipp64f* pDst2, Ipp32s len);

Parameters

pSrc	Pointer to the source vector.
pDst1	Pointer to the first destination vector.
pDst2	Pointer to the second destination vector.
len	Number of elements in the vectors.

Description

The function ippsModf is declared in the ippvm.h file. This function computes a truncated value and a remainder of each element of the vector pSrc. The truncated integer value is stored in the corresponding element of the pDst1 vector and the remainder is stored in the corresponding element of the pDst2 vector.

The example below shows how to use the function ippsModf.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when pSrc or pDst1 or pDst2 pointer is NULL.
ippStsSizeErr	Indicates an error when len is less than or equal to 0.

Using ippsModf Function

IppStatus ippsModf_32f_sample(void)

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

    Ipp32f y1[4] y2[4];

    IppStatus st = ippsModf_32f ( x, y1, y2, 4 );

    printf(" ippsModf_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]);

    return st;

Output results:

ippsModf_32f:

x = -1.883 -0.265 0.176 1.752

y1 = -1.000 0.000 0.000 1.000

y2 = -0.883 -0.265 0.176 0.752