Visible to Intel only — GUID: GUID-055A217B-0562-4362-8012-C02CEA8F678C
Visible to Intel only — GUID: GUID-055A217B-0562-4362-8012-C02CEA8F678C
Sqrt
Computes square roots of pixel values of a source image and writes them into the destination image.
Syntax
Case 1: Not-in-place operation on integer data
IppStatus ippiSqrt_<mod>(const Ipp<datatype>* pSrc, int srcStep, Ipp<datatype>* pDst, int dstStep, IppiSize roiSize, int scaleFactor);
Supported values for mod:
8u_C1RSfs |
16u_C1RSfs |
16s_C1RSfs |
8u_C3RSfs |
16u_C3RSfs |
16s_C3RSfs |
8u_AC4RSfs |
16u_AC4RSfs |
16s_AC4RSfs |
Case 2: Not-in-place operation on floating-point data
IppStatus ippiSqrt_<mod>(const Ipp32f* pSrc, int srcStep, Ipp32f* pDst, int dstStep, IppiSize roiSize);
Supported values for mod:
32f_C1R |
32f_C3R |
32f_AC4R |
Case 3: In-place operation on integer data
IppStatus ippiSqrt_<mod>(Ipp<datatype>* pSrcDst, int srcDstStep, IppiSize roiSize, int scaleFactor);
Supported values for mod:
8u_C1IRSfs |
16u_C1IRSfs |
16s_C1IRSfs |
8u_C3IRSfs |
16u_C3IRSfs |
16s_C3IRSfs |
8u_AC4IRSfs |
16u_AC4IRSfs |
16s_AC4IRSfs |
Case 4: In-place operation on floating-point data
IppStatus ippiSqrt_<mod>(Ipp32f* pSrcDst, int srcDstStep, IppiSize roiSize);
Supported values for mod:
32f_C1IR |
32f_C3IR |
32f_C4IR |
32f_AC4IR |
Case 5: Threading layer functions based on classic API
IppStatus ippiSqrt_16s_C1IRSfs_T(Ipp16s* pSrcDst, int srcDstStep, IppiSize roiSize, int scaleFactor);
IppStatus ippiSqrt_16s32s_C1RSfs_T(const Ipp16s* pSrc, int srcStep, Ipp32s* pDst, int dstStep, IppiSize roiSize, int scaleFactor);
Include Files
ippi.h
Domain Dependencies
Headers: ippcore.h, ippvm.h, ipps.h
Libraries: ippcore.lib, ippvm.lib, ipps.lib
Parameters
pSrc |
Pointer to the source image ROI. |
srcStep |
Distance, in bytes, between the starting points of consecutive lines in the source image. |
pDst |
Pointer to the destination image ROI. |
dstStep |
Distance, in bytes, between the starting points of consecutive lines in the destination image. |
pSrcDst |
Pointer to the source and destination image ROI for the in-place operation. |
srcDstStep |
Distance, in bytes, between the starting points of consecutive lines in the source and destination image for the in-place operation. |
roiSize |
Size of the source and destination ROI in pixels. |
scaleFactor |
Scale factor (see Integer Result Scaling). |
Description
This function operates with ROI (see Regions of Interest in Intel IPP).
This function computes square roots of pixel values of the source image ROI and writes them into the destination image ROI. The function flavors operating on integer data apply fixed scaling defined by scaleFactor to the internally computed values, and saturate the results before writing them to the destination image ROI. If a source pixel value is negative, the function issues a warning and continues execution with the corresponding result value (see appendix “Handling of Special Cases” for more information ).
Note that the functions with the AC4 descriptor do not process alpha channels.
Return Values
ippStsNoErr |
Indicates no error. Any other value indicates an error or a warning. |
ippStsNullPtrErr |
Indicates an error condition if one of the specified pointers is NULL. |
ippStsSizeErr |
Indicates an error condition if roiSize has a field with zero or negative value. |
ippStsSqrtNegArg |
Indicates a warning that a source pixel has a negative value. |