enchantments always whole numbers?

lets say i cast reversal of fortune (8s duration) with a 20% enchant item.
will the time be 9s (rounded down), 10s (rounded up) or 9.6s (exact)?

from my testing it seems to be either rounded up or exact, but i'm not sure which one.

I'm pretty sure it will be rounded up to 10 seconds.

http://wiki.guildwars.com/wiki/Talk:Duration

From this link it seems that above .5 it is rounded up and below .5 it is rounded down.

it rounds down i think....
say 9.9 secs, will become 9 secs

i've always remembered it to be like that o.O
now the above posters are really putting doubt in my mind D:

From a programming perspective it might be that the durations are declared as integers in which case I think it would round down to the whole number associated with it. For instance, 9.999 would still be 9, simply because the programming language only reads the number to the left of the decimal point when it is an integer.

I'm not sure though, and GW might use a different language that works differently.