Description:
------------
When rounding (implicitly) with sprintf, halfway values are rounded using a "banker's" algorithm instead of performing the way a call to round() would.

This seems inconsistent and counterintuitive for no particular reason.

Thanks!

Reproduce code:
---------------
print sprintf("%2.2f", 0.015)."<br/>";
print sprintf("%2.2f", 0.025)."<br/>";
print sprintf("%2.2f", 0.035)."<br/>";
print sprintf("%2.2f", 0.045)."<br/>";
print "<br/>";
print round(0.015, 2)."<br/>";
print round(0.025, 2)."<br/>";
print round(0.035, 2)."<br/>";
print round(0.045, 2)."<br/>";

Expected result:
----------------
0.02
0.03
0.04
0.05

0.02
0.03
0.04
0.05

Actual result:
--------------
0.01
0.03
0.04
0.04

0.02
0.03
0.04
0.05