Powx
Raises each element of a vector to a constant power.
Syntax
IppStatus ippsPowx_32f_A11 (const Ipp32f*
pSrc1
, const Ipp32f
ConstValue
, Ipp32f*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_32f_A21 (const Ipp32f*
pSrc1
, const Ipp32f
ConstValue
, Ipp32f*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_32f_A24 (const Ipp32f*
pSrc1
, const Ipp32f
ConstValue
, Ipp32f*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_64f_A26 (const Ipp64f*
pSrc1
, const Ipp64f
ConstValue
, Ipp64f*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_64f_A50 (const Ipp64f*
pSrc1
, const Ipp64f
ConstValue
, Ipp64f*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_64f_A53 (const Ipp64f*
pSrc1
, const Ipp64f
ConstValue
, Ipp64f*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_32fc_A11 (const Ipp32fc*
pSrc1
, const Ipp32fc
ConstValue
, Ipp32fc*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_32fc_A21 (const Ipp32fc*
pSrc1
, const Ipp32fc
ConstValue
, Ipp32fc*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_32fc_A24 (const Ipp32fc*
pSrc1
, const Ipp32fc
ConstValue
, Ipp32fc*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_64fc_A26 (const Ipp64fc*
pSrc1
, const Ipp64fc
ConstValue
, Ipp64fc*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_64fc_A50 (const Ipp64fc*
pSrc1
, const Ipp64fc
ConstValue
, Ipp64fc*
pDst
, Ipp32s
len
);
IppStatus ippsPowx_64fc_A53 (const Ipp64fc*
pSrc1
, const Ipp64fc
ConstValue
, Ipp64fc*
pDst
, Ipp32s
len
);
Include Files
ippvm.h
Domain Dependencies
Headers:
ippcore.h
Libraries:
ippcore.lib
Parameters
- pSrc1
- Pointer to the source vector.
- ConstValue
- Constant value.
- pDst
- Pointer to the destination vector.
- len
- Number of elements in the vectors.
Description
This function
raises each element of the vector
pSrc1
to the constant power
ConstValue
and stores the result in the corresponding element of
pDst
.
For single precision data:
function flavors
ippsPowx_32f_A11
and
ippsPowx_32cf_A11
guarantee 11 correctly rounded bits of significand, or at least 3 exact decimal digits;
function flavors
ippsPowx_32f_A21
and
ippsPowx_32fc_A21
guarantee 21 correctly rounded bits of significand, or 4 ulps, or about 6 exact decimal digits;
function flavors
ippsPowx_32f_A24
and
ippsPowx_32fc_A24
guarantee 24 correctly rounded bits of significand, including the implied bit, with the maximum guaranteed error within 1 ulp.
For double precision data:
function flavors
ippsPowx_64f_A26
and
ippsPowx_64fc_A26
guarantee 26 correctly rounded bits of significand, or 6.7E+7 ulps, or approximately 8 exact decimal digits;
function flavors
ippsPowx_64f_A50
and
ippsPowx_64fc_A50
guarantee 50 correctly rounded bits of significand, or 4 ulps, or approximately 15 exact decimal digits;
function flavors
ippsPowx_64f_A53
and
ippsPowx_64fc_A53
guarantee 53 correctly rounded bits of significand, including the implied bit, with the maximum guaranteed error within 1 ulp.
Note that for
ippsPowx
complex functions there may be argument ranges where the accuracy specification does not hold.
The computation is performed as follows:
pDst
[n] = (
pSrc
[n])
ConstValue
0 ≤ n <
.
len
Return Values
- ippStsNoErr
- Indicates no error.
- ippStsNullPtrErr
- Indicates an error whenpSrc1orpDstpointer isNULL.
- ippStsSizeErr
- Indicates an error whenlenis less than or equal to 0.
- ippStsDomain
- In real functions, indicates a warning that the argument is out of the function domain, that is, at least one pair of the elements meets the following condition: element ofpSrc1is finite, less than 0, andConstValueis finite, non-integer.
- IppStsSingularity
- In real functions, indicates a warning that the argument is the singularity point, that is, at least one pair of the elements is as follows: element ofpSrc1is equal to 0, andConstValueis integer and less than 0.
Example
The example below shows how to use the function
ippsPowx
. IppStatus ippsPowx_32f_A21_sample(void)
{
const Ipp32f x1[4] = {0.483, 0.565, 0.776, 0.252};
const Ipp32f x2 = 0.823;
Ipp32f y[4];
IppStatus st = ippsPowx_32f_A21( x1, x2, y, 4 );
printf(" ippsPowx_32f_A21:\n");
printf(" x1 = %.3f %.3f %.3f %.3f \n", x1[0], x1[1], x1[2], x1[3]);
printf(" x2 = %.3f \n", x2);
printf(" y = %.3f %.3f %.3f %.3f \n", y[0], y[1], y[2], y[3]);
return st;
}
Output results:
ippsPowx_32f_A21:
x1 = 0.483 0.565 0.776 0.252
x2 = 0.823
y = 0.549 0.568 0.901 0.386