[betafemale]

[ QUOTE ]
It is customary to round up when you're dealing with decimals. 3.5 would round up to 4 instead of 3 in this case

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This is not true, while 3.5 should be rounded up, 3.4 should be rounded down. Not that it is a big deal anyways, it only is a problem if you use the mod not as intended (meaning betting 4 instead of 3.5 bb preflop). I personaly think rounding to nearest small blind is best, it works both preflop and postflop (this is how I have it in my script), and will not mess with your preference to raise 3.5 or 4 bb preflop.