Developer Reference

  • 2020
  • 07/15/2020
  • Public Content
Contents

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
);
Include Files
ippvm.h
Domain Dependencies
Headers:
ippcore.h
Libraries:
ippcore.lib
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
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.
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.

Example

The example below shows how to use the function
ippsModf
.
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

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804