Module Fcl_expr


module Fcl_expr: sig .. end
Arithmetic Expressions over Variables of Type Var.Fd.t


This module provides functions and operators to build arithmetic expressions.

type agg_op =
| Pluse
| Multe

type bin_op =
| Dive
| Mode

type un_op =
| Abse

type var =
| Var of Fcl_var.Fd.t
| Aux of int

type t =
| Agg of agg_op * (int * t) list * int
| Bin of bin_op * t * t
| Un of un_op * t
| Inte of int
| Fde of var (*Type of arithmetic expressions over variables of type Var.Fd.t and integers.*)
val fprint : Pervasives.out_channel -> t -> unit
fprint chan e prints expression e on channel chan.
val eval : t -> int
eval e returns the integer numerical value of a fully instantiated expression e. Raises Invalid_argument if e is not instantiated.
val min_of_expr : t -> int
val max_of_expr : t -> int
min_of_expr e (resp. max_of_expr e) returns the minimal (resp. maximal) possible value of expression e.
val min_max_of_expr : t -> int * int
min_max_of_expr e is equivalent to (min_of_expr e, max_of_expr e).
val compare_expr : t -> t -> int
val compare_intexpr : int * t -> int * t -> int
val reduce : t -> t
reduce e normalizes expression e.
val constrain : t -> Fcl_linear.operator -> Fcl_cstr.t
constrain e op returns the constraint e op = 0 and post intermediate constraints.