Visible to Intel only — GUID: GUID-36C05406-7F34-4FC4-8DA3-670C2EEA3542
Visible to Intel only — GUID: GUID-36C05406-7F34-4FC4-8DA3-670C2EEA3542
Cbrt
Computes cube root of each vector element.
Syntax
IppStatus ippsCbrt_32f_A11 (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);
IppStatus ippsCbrt_32f_A21 (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);
IppStatus ippsCbrt_32f_A24 (const Ipp32f* pSrc, Ipp32f* pDst, Ipp32s len);
IppStatus ippsCbrt_64f_A26 (const Ipp64f* pSrc, Ipp64f* pDst, Ipp32s len);
IppStatus ippsCbrt_64f_A50 (const Ipp64f* pSrc, Ipp64f* pDst, Ipp32s len);
IppStatus ippsCbrt_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 cube root of each element of pSrc, and stores the result in the corresponding element of pDst.
For single precision data:
function flavor ippsCbrt_32f_A11 guarantees 11 correctly rounded bits of significand, or at least 3 exact decimal digits;
function flavor ippsCbrt_32f_A21 guarantees 21 correctly rounded bits of significand, or 4 ulps, or about 6 exact decimal digits;
function flavor ippsCbrt_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 ippsCbrt_64f_A26 guarantees 26 correctly rounded bits of significand, or 6.7E+7 ulps, or approximately 8 exact decimal digits;
function flavor ippsCbrt_64f_A50 guarantees 50 correctly rounded bits of significand, or 4 ulps, or approximately 15 exact decimal digits;
function flavor ippsCbrt_64f_A53 guarantees 53 correctly rounded bits of significand, including the implied bit, with the maximum guaranteed error within 1 ulp.
The computation is performed as follows:
pDst[n] = (pSrc[n])1/3, 0 ≤ n < len.
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. |
Example
The example below shows how to use the function ippsCbrt.
IppStatus ippsCbrt_32f_A21_sample(void) { const Ipp32f x[4] = {6456.801, 4932.096, -6517.838, 7178.869}; Ipp32f y[4]; IppStatus st = ippsCbrt_32f_A21( x, y, 4 ); printf(" ippsCbrt_32f_A21:\n"); printf(" x = %.3f %.3f %.3f %.3f \n", x[0], x[1], x[2], x[3]); printf(" y = %.3f %.3f %.3f %.3f \n", y[0], y[1], y[2], y[3]); return st; }
Output:
ippsCbrt_32f_A21: x = 6456.801 4932.096 -6517.838 7178.869 y = 18.621 17.022 -18.680 19.291