Description:
------------
iterations give aproximation beetween two val, but . Every time there value are 
the same :

4.38 .. 10

Test script:
---------------
for ($A = 0.8; $A < 5 * 3.1416; $A+=0.01) {
	echo $A."<br />";

}

Expected result:
----------------
0.08
0.09

...

15.68
15.69
15.7

Actual result:
--------------
0.8
0.81

...

4.36
4.37
4.38
4.3899999999999
4.3999999999999

...

9.9899999999998
9.9999999999998
10.01
10.02

...