Visible to Intel only — GUID: GUID-563C673B-9551-4998-AE90-76C1687D4C70
Visible to Intel only — GUID: GUID-563C673B-9551-4998-AE90-76C1687D4C70
Expm1
Computes e raised to the power of each vector element and decreased by 1.
Syntax
IppStatus ippsExpm1_32f_A11 (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);
IppStatus ippsExpm1_32f_A21 (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);
IppStatus ippsExpm1_32f_A24 (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);
IppStatus ippsExpm1_64f_A26 (const Ipp64f* pSrc, Ipp64f* pDst, Ipp32s len);
IppStatus ippsExpm1_64f_A50 (const Ipp64f* pSrc, Ipp64f* pDst, Ipp32s len);
IppStatus ippsExpm1_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 e raised to the power of each vector element of pSrc and decreased by 1, and stores the result in the corresponding element of the vector pDst.
For single precision data:
function flavor ippsExpm1_32f_A11 guarantees 11 correctly rounded bits of significand, or at least 3 exact decimal digits;
function flavor ippsExpm1_32f_A21 guarantees 21 correctly rounded bits of significand, or 4 ulps, or about 6 exact decimal digits;
function flavor ippsExpm1_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 ippsExpm1_64f_A26 guarantees 26 correctly rounded bits of significand, or 6.7E+7 ulps, or approximately 8 exact decimal digits;
function flavor ippsExpm1_64f_A50 guarantees 50 correctly rounded bits of significand, or 4 ulps, or approximately 15 exact decimal digits;
function flavor ippsExpm1_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. |
IppStsOverflow |
Indicates a warning that the function overflows, that is, at least one of elements of pSrc is greater than Ln(FPMAX), where FPMAX is the maximum representable floating-point number. |