Stanislav Blinov:
That won't compile with dmd (at least, with 2.064.2): it
expects constants as initializers for vectors. :( That's why I
rolled up that toDouble2() function.
I see. Then probably I will have to put it back...
With N = 5_000_000 my timings on an old CPU are 2.23 seconds
for ldc2 and 1.83 seconds for g++. So there's some performance
difference.
What about 50_000_000?
First let me try to fiddle with the code some more :-)
Once done, this should go somewhere (like the wiki) as a simple
example of SIMD usage in D.
Bye,
bearophile
