File: heads.mli

package info (click to toggle)
coq-doc 8.2pl1-1
  • links: PTS, VCS
  • area: non-free
  • in suites: squeeze
  • size: 19,240 kB
  • ctags: 22,737
  • sloc: ml: 132,933; ansic: 1,960; sh: 1,366; lisp: 456; makefile: 327
file content (28 lines) | stat: -rw-r--r-- 1,153 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
(************************************************************************)
(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(*   \VV/  **************************************************************)
(*    //   *      This file is distributed under the terms of the       *)
(*         *       GNU Lesser General Public License Version 2.1        *)
(************************************************************************)

(* $Id: heads.mli 10841 2008-04-24 07:19:57Z herbelin $ *)

open Names
open Term
open Environ

(** This module is about the computation of an approximation of the
    head symbol of defined constants and local definitions; it
    provides the function to compute the head symbols and a table to
    store the heads *)

(* [declared_head] computes and registers the head symbol of a
   possibly evaluable constant or variable *)

val declare_head : evaluable_global_reference -> unit

(* [is_rigid] tells if some term is known to ultimately reduce to a term
    with a rigid head symbol *)

val is_rigid : env -> constr -> bool