Hi,
I hope this is the right forum because I couldn't find any SIMD subforum here.
My problem:
I want to optimize the following code with SSE2 (_mm_cmpgt_epi8):
[bash]int16 kr = 16;
for(x = 0; x < xr; x++)
{
if(*inPtr > this->m_SaturationMin)
col--;
else
col = kr-1;
inPtr++;
}[/bash] col is an array in which resulting indices are stored,
inPtr is an image,
this->m_SaturationMin is an integer value (0 most of the time). I thought I could use
_mm_cmpgt_epi8 (
http://msdn.microsoft.com/en-us/library/wf45zt2b(v=VS.80).aspx) where
a is the pointer from
inPtrand
bis
this->m_SaturationMin. The output would be 255 or 0 for the elements and I would need col
-- and kr-1 as output. I had some ideas to work around with shifting bits and such, but in the end it wouldn't be much of a performance increase. Is there any function which does something similar what I need (SSE,SSE2,SSE3,SSE4)? I don't own the ipp, but maybe someone knows a function which does exactly what I described - then I could read in the manual how to do it. Thanks in advance.
Swoncen
