FLOOR, CEILING (_) <.y gives the floor or integer part of y, and <.y is therefore the largest integer such that (<.y) <: y. The implied comparison with integers is tolerant. See Equal (=). The ceiling >.y is ΓÇô<.ΓÇôy. See McDonnell [4] for the case of complex arguments.
LESSER OF, LARGER OF (0 0) x<.y is the lesser of x and y, and x>.y yields the larger. Thus, 3<.4 _4 is 3 _4.
