Kdb doesn't have a reserved keyword for rounding rational numbers to the nearest integer; which is rather strange given that it is quite a common computation. One way of doing it is by using casting:
q) "i"$0.1
0
q) "i"$0.9
1
I decided to write function that can be used to do rounding; which is more terse than casting.
.q.round:{floor x+0.5}
q) round 0.1
0
q) round 0.6
1
