Monadic floor

floor returns the greatest integer less or equal to the argument.

Syntax: floor [x]

o)floor[10.5]
10f
o)floor[-10.5]
-11f
o)floor[-2.5 0 2.5]
-3 0 2f
o)abs floor[-1.2]
2f
o)

The function is atomic:

o)floor[(2.3 4.5;6.7)]
2 4f
6f
o)