Author: Fermin Serrano
Date: 07:38:57 05/12/03
Programming my engine I have same doubts (many, only post same concerning
speed):
Question 1:
-----------------
I would like to know how jumps can slow down my engine. I mean, if I have a
function like this:
int eval () {
r1 = { code to analyze knight position }
r2 = { code to analyze bishop }
etc
return r1[side]-r1[c_side]+r2[side]-r2[c_side]+ .... etc
}
if I replace r1 = eval_knight_position(), r2=eval_bishop_position(), etc....
how many could this slow down the code? I think this obviously is slower because
it add jump and stack code, but is better in terms of clarity and code
organization... so I want to know the speed efects and know when to apply
functions calls or paste same code.
Question 2:
-----------------
Are 'and' operations faster than == operator?.
I can use "if (flag == TRUE)" or "if (flag & TRUE)" with the same effect. What
is faster?
Question 3:
-----------------
To copy a structure into other, what is faster, doing by copy each of his
elements or use a memcpy?
Question 4:
-----------------
Does any of you use assambler code for any part of your engine code? why? what
part?
I Know algorithm implementations is by far the most important thing to speed
the programs.
Thanks in advance.
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