On Jun 15, 2004, at 2:39 PM, Tim Blechmann wrote:
i'm still experiencing denormal problems with steve harris's ladspa plugins ...
Tom Szilagyi is going through some serious work on his TAP plugins for exactly the same reason. He never tested them on Pentium before.
developers should have slow machines with big denormal problems ;-)
What is SuSE's exact position on licenses? Not to open this box one more time for theoretical squabbling, but I wonder if they have cribbed something from the Intel compiler?
i'm not sure ... maybe they used a commercial compiler... it it said, that the intel compiler had some improvements to detect and remove denormal numbers, but i've never been able to prove that ... i tried several compiler flags without success, the only success i had was changing the PD_BADFLOAT macro... the best sollution would probably be to rewrite the critical operations in assembler for the critical (p4) systems ... using sse instructions...
thomas grill did something like that, but iirc only for altivec and visual c, not for gcc (although i don't know the difference between vc and gcc) ... when i have too much time, i'll probably look into it...
Has anyone tested gcc's -mfpmath=sse2 option in regards to denormals?
If SSE helps with denormals, it seems like all of Pd should be compiled
with this option.
.hc
http://at.or.at/hans/