src/proof/clause_id.h

   1 /*********************                                                        */
   2 /*! \file clause_id.h
   3  ** \verbatim
   4  ** Top contributors (to current version):
   5  **   Paul Meng, Mathias Preiner, Liana Hadarean
   6  ** This file is part of the CVC4 project.
   7  ** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
   8  ** in the top-level source directory and their institutional affiliations.
   9  ** All rights reserved.  See the file COPYING in the top-level source
  10  ** directory for licensing information.\endverbatim
  11  **
  12  ** \brief Definition of ClauseId
  13  **
  14  ** A ClauseId is a shared identifier between the proofs module and the sat
  15  ** solver for a clause.
  16  **/
  17
  18 #include "cvc4_private.h"
  19
  20 #ifndef CVC4__PROOF__CLAUSE_ID_H
  21 #define CVC4__PROOF__CLAUSE_ID_H
  22
  23 namespace CVC4 {
  24
  25 /**
  26  * A ClauseId is a shared identifier between the proofs module and the sat
  27  * solver for a clause.
  28  */
  29 typedef unsigned ClauseId;
  30
  31 /** Reserved clauseId values used in the resolution proof. The represent,
  32  * respectively, the empty clause, that adding the clause to the SAT solver was
  33  * a no-op, and that an error occurred when trying to add. */
  34 const ClauseId ClauseIdEmpty(-1);
  35 const ClauseId ClauseIdUndef(-2);
  36 const ClauseId ClauseIdError(-3);
  37
  38 }/* CVC4 namespace */
  39
  40 #endif /* CVC4__PROOF__CLAUSE_ID_H */