Module type Index.EQUATION

type t
type rhs

An equation can have something other than a term as a right-hand side, for instance a formula.

val compare : t -> t -> int

Total order on equations

val extract : t -> Index_intf.term * rhs * bool

Obtain a representation of the (in)equation. The sign indicates whether it is an equation l = r (if true) or an inequation l != r (if false)

val priority : t -> int

How "useful" this equation is. Can be safely ignored by always returning the same number.