diff options
Diffstat (limited to 'src/proof/clause_id.h')
| -rw-r--r-- | src/proof/clause_id.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/proof/clause_id.h b/src/proof/clause_id.h index b2d36c9cb..e2dff2559 100644 --- a/src/proof/clause_id.h +++ b/src/proof/clause_id.h @@ -2,10 +2,10 @@ /*! \file clause_id.h ** \verbatim ** Top contributors (to current version): - ** Paul Meng, Mathias Preiner + ** Paul Meng, Mathias Preiner, Liana Hadarean ** This file is part of the CVC4 project. ** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS - ** in the top-level source directory) and their institutional affiliations. + ** in the top-level source directory and their institutional affiliations. ** All rights reserved. See the file COPYING in the top-level source ** directory for licensing information.\endverbatim ** @@ -28,6 +28,13 @@ namespace CVC4 { */ typedef unsigned ClauseId; +/** Reserved clauseId values used in the resolution proof. The represent, + * respectively, the empty clause, that adding the clause to the SAT solver was + * a no-op, and that an error occurred when trying to add. */ +const ClauseId ClauseIdEmpty(-1); +const ClauseId ClauseIdUndef(-2); +const ClauseId ClauseIdError(-3); + }/* CVC4 namespace */ #endif /* CVC4__PROOF__CLAUSE_ID_H */ |