Chris@82: (*
Chris@82:  * Copyright (c) 1997-1999 Massachusetts Institute of Technology
Chris@82:  * Copyright (c) 2003, 2007-14 Matteo Frigo
Chris@82:  * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
Chris@82:  *
Chris@82:  * This program is free software; you can redistribute it and/or modify
Chris@82:  * it under the terms of the GNU General Public License as published by
Chris@82:  * the Free Software Foundation; either version 2 of the License, or
Chris@82:  * (at your option) any later version.
Chris@82:  *
Chris@82:  * This program is distributed in the hope that it will be useful,
Chris@82:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@82:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@82:  * GNU General Public License for more details.
Chris@82:  *
Chris@82:  * You should have received a copy of the GNU General Public License
Chris@82:  * along with this program; if not, write to the Free Software
Chris@82:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Chris@82:  *
Chris@82:  *)
Chris@82: 
Chris@82: type transcendent = I | MULTI_A | MULTI_B | CONJ
Chris@82: 
Chris@82: type expr =
Chris@82:   | Num of Number.number
Chris@82:   | NaN of transcendent
Chris@82:   | Plus of expr list
Chris@82:   | Times of expr * expr
Chris@82:   | CTimes of expr * expr
Chris@82:   | CTimesJ of expr * expr
Chris@82:   | Uminus of expr
Chris@82:   | Load of Variable.variable
Chris@82:   | Store of Variable.variable * expr
Chris@82: 
Chris@82: type assignment = Assign of Variable.variable * expr
Chris@82: 
Chris@82: val hash_float : float -> int
Chris@82: val hash : expr -> int
Chris@82: val to_string : expr -> string
Chris@82: val assignment_to_string : assignment -> string
Chris@82: val transcendent_to_float : transcendent -> float
Chris@82: val string_of_transcendent : transcendent -> string
Chris@82: 
Chris@82: val find_vars : expr -> Variable.variable list
Chris@82: val is_constant : expr -> bool
Chris@82: val is_known_constant : expr -> bool
Chris@82: 
Chris@82: val dump : (string -> unit) -> assignment list -> unit
Chris@82: 
Chris@82: val expr_to_constants : expr -> Number.number list
Chris@82: val unique_constants : Number.number list -> Number.number list