# Module Tcons1

    module Tcons1: sig .. end

    type t = {

`` | `mutable tcons0 : `Tcons0.t`;`
`` | `mutable env : `Environment.t`;`

`}`

    type earray = {

`` | `mutable tcons0_array : `Tcons0.t array`;`
`` | `mutable array_env : `Environment.t`;`

`}`

APRON tree constraints and array of tree constraints of level 1

    type typ = Lincons0.typ =

`|` | `EQ`
`|` | `SUPEQ`
`|` | `SUP`
`|` | `DISEQ`
`|` | `EQMOD of `Scalar.t``

    val make : Texpr1.t -> typ -> t

Make a tree expression constraint. Modifying later the linear expression (not advisable) modifies correspondingly the tree expression constraint and conversely, except for changes of environments

    val copy : t -> t

Copy (deep copy)

    val string_of_typ : typ -> string

Convert a constraint type to a string (`=`,`>=`, or `>`)

    val print : Stdlib.Format.formatter -> t -> unit

Print the tree expression constraint

    val get_typ : t -> typ

Get the constraint type

    val set_typ : t -> typ -> unit

Set the constraint type

    val extend_environment : t -> Environment.t -> t

Change the environment of the constraint for a super-environment. Raise `Failure` if it is not the case

    val extend_environment_with : t -> Environment.t -> unit

Side-effect version of the previous function

    val get_env : t -> Environment.t

Get the environment of the tree expression constraint

    val get_texpr1 : t -> Texpr1.t

Get the underlying linear expression. Modifying the linear expression (not advisable) modifies correspondingly the tree expression constraint and conversely, except for changes of environments

    val get_tcons0 : t -> Tcons0.t

Get the underlying tree expression constraint of level 0. Modifying the constraint of level 0 (not advisable) modifies correspondingly the tree expression constraint and conversely, except for changes of environments

### Type array

    val array_make : Environment.t -> int -> earray

Make an array of tree expression constraints with the given size and defined on the given environment. The elements are initialized with the constraint 0=0.

    val array_print : ?first:(unit, Stdlib.Format.formatter, unit) Stdlib.format ->
           ?sep:(unit, Stdlib.Format.formatter, unit) Stdlib.format ->
           ?last:(unit, Stdlib.Format.formatter, unit) Stdlib.format ->
           Stdlib.Format.formatter -> earray -> unit

Print an array of constraints

    val array_length : earray -> int

Get the size of the array

    val array_get_env : earray -> Environment.t

Get the environment of the array

    val array_get : earray -> int -> t

Get the element of the given index (which is not a copy)

    val array_set : earray -> int -> t -> unit

Set the element of the given index (without any copy). The array and the constraint should be defined on the same environment; otherwise a `Failure` exception is raised.

    val array_extend_environment : earray -> Environment.t -> earray

Change the environment of the array of constraints for a super-environment. Raise `Failure` if it is not the case

    val array_extend_environment_with : earray -> Environment.t -> unit

Side-effect version of the previous function