| /* | |
| Copyright (c) 2014 Microsoft Corporation. All rights reserved. | |
| Released under Apache 2.0 license as described in the file LICENSE. | |
| Author: Leonardo de Moura | |
| */ | |
| #pragma once | |
| #include <iostream> | |
| namespace lean { | |
| /** | |
| \brief lifted Booleans | |
| */ | |
| enum lbool { l_false = -1, l_undef, l_true }; | |
| inline lbool operator~(lbool lb) { return static_cast<lbool>(-static_cast<int>(lb)); } | |
| inline lbool to_lbool(bool b) { return static_cast<lbool>(static_cast<int>(b)*2-1); } | |
| std::ostream & operator<<(std::ostream & out, lbool b); | |
| } |