cannam@127: (*
cannam@127:  * Copyright (c) 1997-1999 Massachusetts Institute of Technology
cannam@127:  * Copyright (c) 2003, 2007-14 Matteo Frigo
cannam@127:  * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
cannam@127:  *
cannam@127:  * This program is free software; you can redistribute it and/or modify
cannam@127:  * it under the terms of the GNU General Public License as published by
cannam@127:  * the Free Software Foundation; either version 2 of the License, or
cannam@127:  * (at your option) any later version.
cannam@127:  *
cannam@127:  * This program is distributed in the hope that it will be useful,
cannam@127:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@127:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@127:  * GNU General Public License for more details.
cannam@127:  *
cannam@127:  * You should have received a copy of the GNU General Public License
cannam@127:  * along with this program; if not, write to the Free Software
cannam@127:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
cannam@127:  *
cannam@127:  *)
cannam@127: 
cannam@127: type transcendent = I | MULTI_A | MULTI_B | CONJ
cannam@127: 
cannam@127: type expr =
cannam@127:   | Num of Number.number
cannam@127:   | NaN of transcendent
cannam@127:   | Plus of expr list
cannam@127:   | Times of expr * expr
cannam@127:   | CTimes of expr * expr
cannam@127:   | CTimesJ of expr * expr
cannam@127:   | Uminus of expr
cannam@127:   | Load of Variable.variable
cannam@127:   | Store of Variable.variable * expr
cannam@127: 
cannam@127: type assignment = Assign of Variable.variable * expr
cannam@127: 
cannam@127: val hash_float : float -> int
cannam@127: val hash : expr -> int
cannam@127: val to_string : expr -> string
cannam@127: val assignment_to_string : assignment -> string
cannam@127: val transcendent_to_float : transcendent -> float
cannam@127: val string_of_transcendent : transcendent -> string
cannam@127: 
cannam@127: val find_vars : expr -> Variable.variable list
cannam@127: val is_constant : expr -> bool
cannam@127: val is_known_constant : expr -> bool
cannam@127: 
cannam@127: val dump : (string -> unit) -> assignment list -> unit
cannam@127: 
cannam@127: val expr_to_constants : expr -> Number.number list
cannam@127: val unique_constants : Number.number list -> Number.number list