Intel® Integrated Performance Primitives Developer Reference

Developer Reference

  • 2020
  • 10/21/2020
  • Public Content
Contents

Pow2o3

Computes the value of each vector element raised to the power of 2/3.

Syntax

IppStatus ippsPow2o3_32f_A11 (const Ipp32f*
pSrc
, Ipp32f*
pDst
, Ipp32s
len
);
IppStatus ippsPow2o3_32f_A21 (const Ipp32f*
pSrc
, Ipp32f*
pDst
, Ipp32s
len
);
IppStatus ippsPow2o3_32f_A24 (const Ipp32f*
pSrc
, Ipp32f*
pDst
, Ipp32s
len
);
IppStatus ippsPow2o3_64f_A26 (const Ipp64f*
pSrc
, Ipp64f*
pDst
, Ipp32s
len
);
IppStatus ippsPow2o3_64f_A50 (const Ipp64f*
pSrc
, Ipp64f*
pDst
, Ipp32s
len
);
IppStatus ippsPow2o3_64f_A53 (const Ipp64f*
pSrc
, Ipp64f*
pDst
, Ipp32s
len
);
Include Files
ippvm.h
Domain Dependencies
Headers:
ippcore.h
Libraries:
ippcore.lib
Parameters
pSrc
Pointer to the source vector.
pDst
Pointer to the destination vector.
len
Number of elements in the vectors.
Description
This function computes the value of each vector element of the vector
pSrc
 raised to 2/3 power and stores the result in the corresponding element of the vector
pDst
.
For single precision data:
function flavor
ippsPow2o3_32f_A11
 guarantees 11 correctly rounded bits of significand, or at least 3 exact decimal digits;
function flavor
ippsPow2o3_32f_A21
 guarantees 21 correctly rounded bits of significand, or 4 ulps, or about 6 exact decimal digits;
function flavor
ippsPow2o3_32f_A24
 guarantees 24 correctly rounded bits of significand, including the implied bit, with the maximum guaranteed error within 1 ulp.
For double precision data:
function flavor
ippsPow2o3_64f_A26
 guarantees 26 correctly rounded bits of significand, or 6.7E+7 ulps, or approximately 8 exact decimal digits;
function flavor
ippsPow2o3_64f_A50
 guarantees 50 correctly rounded bits of significand, or 4 ulps, or approximately 15 exact decimal digits;
function flavor
ippsPow2o3_64f_A53
 guarantees 53 correctly rounded bits of significand, including the implied bit, with the maximum guaranteed error within 1 ulp.
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.

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