strtr wrote:
== Quote from bearophile (bearophileh...@lycos.com)'s article
But the bigger problem in your code is that you are performing operations on
NaNs (that's the default initalization of FP values in D), and operations on
NaNs
are usually quite slower.
I didn't know that. Is it the same for inf?
Yes, nan and inf are usually the same speed. However, it's very CPU
dependent, and even *within* a CPU! On Pentium 4, for example, for x87,
nan is 200 times slower than a normal value (!), but on Pentium 4 SSE
there's no speed difference at all between nan and normal. I think
there's no speed difference on AMD, but I'm not sure.
There's almost no documentation on it at all.
I used it as a null for structs.
