Visible to Intel only — GUID: GUID-A4ABE0B3-5EA7-4A89-B6B5-383DA4356468
Visible to Intel only — GUID: GUID-A4ABE0B3-5EA7-4A89-B6B5-383DA4356468
Exp
Computes the exponential of pixel values in a source image and writes the results into the destination image.
Syntax
Case 1: Not-in-place operation on integer data
IppStatus ippiExp_<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 |
Case 2: Not-in-place operation on floating-point data
IppStatus ippiExp_<mod>(const Ipp32f* pSrc, int srcStep, Ipp32f* pDst, int dstStep, IppiSize roiSize);
Supported values for mod:
32f_C1R |
32f_C3R |
Case 3: In-place operation on integer data
IppStatus ippiExp_<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 |
Case 4: In-place operation on floating-point data
IppStatus ippiExp_<mod>(Ipp32f* pSrcDst, int srcDstStep, IppiSize roiSize);
Supported values for mod:
32f_C1IR |
32f_C3IR |
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 starts of consecutive lines in the source image. |
pDst |
Pointer to the destination image ROI. |
dstStep |
Distance in bytes between starts 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 starts 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 e to the power of pixel values of the source image ROI and writes the resultant values 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.
When the overflow occurs, the resultant value is determined in accordance with the data type (see appendix “Handling of Special Cases” for more information).
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. |
ippStsStepErr |
Indicates an error condition if srcStep, dstStep, or srcDstStep has a zero or negative value. |