Does anybody knowan IPP function which speeds up the "Ldexp" function?
Thanks in advance.
Gregorio Chindamo
ps. Im using the IPP v6.1.
Do you mean 'double ldexp( double x, int exp )'?
If Yes, please take a look ata Vector Math'ippvm.h' header:
...
IPPAPI( IppStatus, ippsExp_32f_A11, (const Ipp32f a[],Ipp32f r[],Ipp32s n))
IPPAPI( IppStatus, ippsExp_32f_A21, (const Ipp32f a[],Ipp32f r[],Ipp32s n))
IPPAPI( IppStatus, ippsExp_32f_A24, (const Ipp32f a[],Ipp32f r[],Ipp32s n))
IPPAPI( IppStatus, ippsExp_64f_A50, (const Ipp64f a[],Ipp64f r[],Ipp32s n))
IPPAPI( IppStatus, ippsExp_64f_A53, (const Ipp64f a[],Ipp64f r[],Ipp32s n))
...
or, in a Signal Processing'ipps.h' header:
...
IPPAPI(IppStatus, ippsExp_32f_I,(Ipp32f* pSrcDst, int len))
IPPAPI(IppStatus, ippsExp_64f_I,(Ipp64f* pSrcDst, int len))
IPPAPI(IppStatus, ippsExp_16s_ISfs,(Ipp16s* pSrcDst, int len, int scaleFactor))
IPPAPI(IppStatus, ippsExp_32s_ISfs,(Ipp32s* pSrcDst, int len, int scaleFactor))
IPPAPI(IppStatus, ippsExp_64s_ISfs,(Ipp64s* pSrcDst, int len, int scaleFactor))
...
or,
http://software.intel.com/sites/products/documentation/hpc/compilerpro/en-us/cpp/lin/ipp/ipps/ipps_ch5/functn_Exp.html
Best regards,
Sergey
