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<div class="title">xchaff.cpp</div> </div>
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<a href="xchaff_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">///////////////////////////////////////////////////////////////////////////////</span>
<a name="l00002"></a>00002 <span class="comment"></span><span class="comment">// //</span>
<a name="l00003"></a>00003 <span class="comment">// File: xchaff.cpp //</span>
<a name="l00004"></a>00004 <span class="comment">// Author: Clark Barrett //</span>
<a name="l00005"></a>00005 <span class="comment">// Created: Wed Oct 16 17:31:50 2002 //</span>
<a name="l00006"></a>00006 <span class="comment">// Description: Enhanced C++ API for Chaff //</span>
<a name="l00007"></a>00007 <span class="comment">// //</span><span class="comment"></span>
<a name="l00008"></a>00008 <span class="comment">///////////////////////////////////////////////////////////////////////////////</span>
<a name="l00009"></a>00009 <span class="comment"></span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="preprocessor">#include "<a class="code" href="xchaff_8h.html">xchaff.h</a>"</span>
<a name="l00012"></a>00012
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <a class="code" href="classSatSolver.html">SatSolver</a> *<a class="code" href="classSatSolver.html#aad67f64508f2560518d09449cd4e39ee">SatSolver::Create</a>()
<a name="l00015"></a>00015 {
<a name="l00016"></a>00016 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classXchaff.html">Xchaff</a>();
<a name="l00017"></a>00017 }
<a name="l00018"></a>00018
<a name="l00019"></a>00019
<a name="l00020"></a><a class="code" href="classXchaff.html#aa7755a77a17224ef7540ff9cf475ebe0">00020</a> <a class="code" href="unionSatSolver_1_1Clause.html">SatSolver::Clause</a> <a class="code" href="classXchaff.html#aa7755a77a17224ef7540ff9cf475ebe0">Xchaff::GetClause</a>(<span class="keywordtype">int</span> clauseIndex)
<a name="l00021"></a>00021 {
<a name="l00022"></a>00022 <span class="keywordtype">int</span> i,j;
<a name="l00023"></a>00023 <a class="code" href="unionSatSolver_1_1Clause.html">SatSolver::Clause</a> c;
<a name="l00024"></a>00024 assert(clauseIndex >= 0 && clauseIndex < _solver->num_clauses());
<a name="l00025"></a>00025 <span class="keywordflow">if</span> (clauseIndex >= <a class="code" href="classXchaff.html#ad12d883fd228bfbabd7cbe96e75fb9e1">_solver</a>-><a class="code" href="classCDatabase.html#a25c0a024183a09bf973942b1e4865501">init_num_clauses</a>()) {
<a name="l00026"></a>00026 <span class="keywordflow">for</span> (i = j = <a class="code" href="classXchaff.html#ad12d883fd228bfbabd7cbe96e75fb9e1">_solver</a>-><a class="code" href="classCDatabase.html#a25c0a024183a09bf973942b1e4865501">init_num_clauses</a>()-1; j < clauseIndex;)
<a name="l00027"></a>00027 <span class="keywordflow">if</span> (<a class="code" href="classXchaff.html#ad12d883fd228bfbabd7cbe96e75fb9e1">_solver</a>-><a class="code" href="classCDatabase.html#a5af3586dfcd579ab14d37c6b6cf75e18">clause</a>(++i).<a class="code" href="classCClause.html#accc3ecb433cd7ba00affc3180b0911d4">in_use</a>()) j++;
<a name="l00028"></a>00028 c.<a class="code" href="unionSatSolver_1_1Clause.html#a525bdedc03ca4e24251a3b715fc35da8">id</a> = j;
<a name="l00029"></a>00029 }
<a name="l00030"></a>00030 <span class="keywordflow">else</span> c.<a class="code" href="unionSatSolver_1_1Clause.html#a525bdedc03ca4e24251a3b715fc35da8">id</a> = clauseIndex;
<a name="l00031"></a>00031 <span class="keywordflow">return</span> c;
<a name="l00032"></a>00032 }
<a name="l00033"></a>00033
<a name="l00034"></a>00034
<a name="l00035"></a><a class="code" href="classXchaff.html#ad55fdf1df93621b0f79859f9180eed8c">00035</a> <span class="keywordtype">void</span> <a class="code" href="classXchaff.html#ad55fdf1df93621b0f79859f9180eed8c">Xchaff::GetClauseLits</a>(<a class="code" href="unionSatSolver_1_1Clause.html">SatSolver::Clause</a> clause, vector<Lit>* lits)
<a name="l00036"></a>00036 {
<a name="l00037"></a>00037 <span class="keywordtype">int</span> i;
<a name="l00038"></a>00038 <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="classXchaff.html#ad12d883fd228bfbabd7cbe96e75fb9e1">_solver</a>-><a class="code" href="classCDatabase.html#a5af3586dfcd579ab14d37c6b6cf75e18">clause</a>(clause.<a class="code" href="unionSatSolver_1_1Clause.html#a525bdedc03ca4e24251a3b715fc35da8">id</a>).<a class="code" href="classCClause.html#ae4f9f5a951b75aab530b5b05a3232082">num_lits</a>(); ++i)
<a name="l00039"></a>00039 lits->push_back(<a class="code" href="classXchaff.html#a216cb72b0a5a4568ef9a0eb430b2d933">mkLit</a>(<a class="code" href="classXchaff.html#ad12d883fd228bfbabd7cbe96e75fb9e1">_solver</a>-><a class="code" href="classCDatabase.html#a5af3586dfcd579ab14d37c6b6cf75e18">clause</a>(clause.<a class="code" href="unionSatSolver_1_1Clause.html#a525bdedc03ca4e24251a3b715fc35da8">id</a>).<a class="code" href="classCClause.html#aa9e91f96e80b94da2b28e3ab381b9acc">literal</a>(i).<a class="code" href="classCLitPoolElement.html#a19281557172f9102172f404bf9f69cbc">s_var</a>()));
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041
<a name="l00042"></a>00042
<a name="l00043"></a><a class="code" href="classXchaff.html#af833605af7d820b9d7a350a77cd41ed1">00043</a> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53">SatSolver::SATStatus</a> <a class="code" href="classXchaff.html#af833605af7d820b9d7a350a77cd41ed1">Xchaff::Satisfiable</a>(<span class="keywordtype">bool</span> allowNewClauses)
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 <span class="keywordtype">int</span> status;
<a name="l00046"></a>00046 status = <a class="code" href="classXchaff.html#ad12d883fd228bfbabd7cbe96e75fb9e1">_solver</a>-><a class="code" href="classCSolver.html#a351fe372330bede0ada8c3723e844a8e">solve</a>(allowNewClauses);
<a name="l00047"></a>00047 <span class="keywordflow">switch</span> (status) {
<a name="l00048"></a>00048 <span class="keywordflow">case</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53ad154fc26948177f01812d287e6340734">UNSATISFIABLE</a>: <span class="keywordflow">return</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53ad154fc26948177f01812d287e6340734">SatSolver::UNSATISFIABLE</a>;
<a name="l00049"></a>00049 <span class="keywordflow">case</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53a8bc290b76f93dd68bdc44d083a7c4e25">SATISFIABLE</a>: <span class="keywordflow">return</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53a8bc290b76f93dd68bdc44d083a7c4e25">SatSolver::SATISFIABLE</a>;
<a name="l00050"></a>00050 <span class="keywordflow">case</span> <a class="code" href="xchaff__solver_8h.html#a259c70233f322b3e490149190b8bb87ba52acca9974adc722d8bdd782fec68b55">TIME_OUT</a>: <span class="keywordflow">return</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53a1a1ccd6ae244cce5f08fcdf2d4621fe0">SatSolver::BUDGET_EXCEEDED</a>;
<a name="l00051"></a>00051 <span class="keywordflow">case</span> <a class="code" href="xchaff__solver_8h.html#a259c70233f322b3e490149190b8bb87baff91e7382744a3692b5e8b812c24f9dd">MEM_OUT</a>: <span class="keywordflow">return</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53a987b167d27ed988755362d6decb025d8">SatSolver::OUT_OF_MEMORY</a>;
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053 <span class="keywordflow">return</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53a77f70e9dedb02009ba4ab7e6fbea1de3">SatSolver::UNKNOWN</a>;
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055
<a name="l00056"></a>00056
<a name="l00057"></a><a class="code" href="classXchaff.html#ab20bcd7cd57b138b62e63d0e1d9a425f">00057</a> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53">SatSolver::SATStatus</a> <a class="code" href="classXchaff.html#ab20bcd7cd57b138b62e63d0e1d9a425f">Xchaff::Continue</a>()
<a name="l00058"></a>00058 {
<a name="l00059"></a>00059 <span class="keywordtype">int</span> status;
<a name="l00060"></a>00060 status = <a class="code" href="classXchaff.html#ad12d883fd228bfbabd7cbe96e75fb9e1">_solver</a>-><a class="code" href="classCSolver.html#a9119faa6145fead463e8b14ec2f7cf7b">continueCheck</a>();
<a name="l00061"></a>00061 <span class="keywordflow">switch</span> (status) {
<a name="l00062"></a>00062 <span class="keywordflow">case</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53ad154fc26948177f01812d287e6340734">UNSATISFIABLE</a>: <span class="keywordflow">return</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53ad154fc26948177f01812d287e6340734">SatSolver::UNSATISFIABLE</a>;
<a name="l00063"></a>00063 <span class="keywordflow">case</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53a8bc290b76f93dd68bdc44d083a7c4e25">SATISFIABLE</a>: <span class="keywordflow">return</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53a8bc290b76f93dd68bdc44d083a7c4e25">SatSolver::SATISFIABLE</a>;
<a name="l00064"></a>00064 <span class="keywordflow">case</span> <a class="code" href="xchaff__solver_8h.html#a259c70233f322b3e490149190b8bb87ba52acca9974adc722d8bdd782fec68b55">TIME_OUT</a>: <span class="keywordflow">return</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53a1a1ccd6ae244cce5f08fcdf2d4621fe0">SatSolver::BUDGET_EXCEEDED</a>;
<a name="l00065"></a>00065 <span class="keywordflow">case</span> <a class="code" href="xchaff__solver_8h.html#a259c70233f322b3e490149190b8bb87baff91e7382744a3692b5e8b812c24f9dd">MEM_OUT</a>: <span class="keywordflow">return</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53a987b167d27ed988755362d6decb025d8">SatSolver::OUT_OF_MEMORY</a>;
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067 <span class="keywordflow">return</span> <a class="code" href="classSatSolver.html#a09aef5b79042b31f37d0184667c34d53a77f70e9dedb02009ba4ab7e6fbea1de3">SatSolver::UNKNOWN</a>;
<a name="l00068"></a>00068 }
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