Numeric.Interval

data Interval a

(...)

whole

empty

null

singleton

elem

notElem

inf

sup

singular

width

midpoint

intersection

hull

bisection

magnitude

mignitude

contains

isSubsetOf

certainly

(<!)

(<=!)

(==!)

(>=!)

(>!)

possibly

(<?)

(<=?)

(==?)

(>=?)

(>?)

idouble

ifloat