Re: RES: [Dev-C++] Optimizing C code, what is best??

[Graeme F. <gr...@dr...>]

Greetings,

I ran the code you posted and my results were certainly not as impressive as
yours.

start (C++)
1 (37) 186
2 (35) 186
3 (32) 186
4 (33) 186

start (C++ reverse order)
4 (33) 186
3 (32) 186
2 (35) 186
1 (36) 186

start (C reverse order)
4 (33) 186
3 (32) 186
2 (35) 186
1 (36) 186

I made a few changes - not to the methods but to main where I added a system
pause and declared a loop counter so I could change the value. I ran with
the following: DWORD64 loop = 100000000;

Yes their is a difference but marginal. That difference is important if the
code is time critical otherwise it probably doesn't really matter. More
importantly is the algorithm, I could rewrite the code to be horrible
inefficient (nest a for loop and then replacing the iA*iA with iA+iA).

Graeme.