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group__Propagator.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>Clingo C API: Theory Propagation</title>
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<div id="projectname">Clingo C API
</div>
<div id="projectbrief">C API for clingo providing high level functions to control grounding and solving.</div>
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<div class="header">
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<a href="#nested-classes">Classes</a> |
<a href="#typedef-members">Typedefs</a> |
<a href="#enum-members">Enumerations</a> </div>
<div class="headertitle">
<div class="title">Theory Propagation<div class="ingroups"><a class="el" href="group__Control.html">Grounding and Solving</a></div></div> </div>
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<div class="contents">
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Extend the search with propagators for arbitrary theories. </p>
<p>For an example, see <a class="el" href="propagator_8c-example.html">propagator.c</a>. </p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structclingo__propagator.html">clingo_propagator</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">An instance of this struct has to be registered with a solver to implement a custom propagator. <a href="structclingo__propagator.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="typedef-members"></a>
Typedefs</h2></td></tr>
<tr class="memitem:ga84a31c95e48053589feecff95f00d894"><td class="memItemLeft" align="right" valign="top"><a id="ga84a31c95e48053589feecff95f00d894"></a>
typedef int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga84a31c95e48053589feecff95f00d894">clingo_propagator_check_mode_t</a></td></tr>
<tr class="memdesc:ga84a31c95e48053589feecff95f00d894"><td class="mdescLeft"> </td><td class="mdescRight">Corresponding type to <a class="el" href="group__Propagator.html#ga29aa0cd73225dac59890b34f2db57eab" title="Supported check modes for propagators. ">clingo_propagator_check_mode</a>. <br /></td></tr>
<tr class="separator:ga84a31c95e48053589feecff95f00d894"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga640db8ba73adaddd5dbe50b572b77f25"><td class="memItemLeft" align="right" valign="top">typedef struct clingo_propagate_init </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga640db8ba73adaddd5dbe50b572b77f25">clingo_propagate_init_t</a></td></tr>
<tr class="memdesc:ga640db8ba73adaddd5dbe50b572b77f25"><td class="mdescLeft"> </td><td class="mdescRight">Object to initialize a user-defined propagator before each solving step. <a href="#ga640db8ba73adaddd5dbe50b572b77f25">More...</a><br /></td></tr>
<tr class="separator:ga640db8ba73adaddd5dbe50b572b77f25"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga6198e3190869e937ca7135e5314ddf26"><td class="memItemLeft" align="right" valign="top">typedef struct clingo_assignment </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a></td></tr>
<tr class="memdesc:ga6198e3190869e937ca7135e5314ddf26"><td class="mdescLeft"> </td><td class="mdescRight">Represents a (partial) assignment of a particular solver. <a href="#ga6198e3190869e937ca7135e5314ddf26">More...</a><br /></td></tr>
<tr class="separator:ga6198e3190869e937ca7135e5314ddf26"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gac68cd9a38909ef2d08376f4e9a6352dd"><td class="memItemLeft" align="right" valign="top"><a id="gac68cd9a38909ef2d08376f4e9a6352dd"></a>
typedef int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gac68cd9a38909ef2d08376f4e9a6352dd">clingo_clause_type_t</a></td></tr>
<tr class="memdesc:gac68cd9a38909ef2d08376f4e9a6352dd"><td class="mdescLeft"> </td><td class="mdescRight">Corresponding type to <a class="el" href="group__Propagator.html#gab158fba808ea7d1eee7f955858aca36c" title="Enumeration of clause types determining the lifetime of a clause. ">clingo_clause_type</a>. <br /></td></tr>
<tr class="separator:gac68cd9a38909ef2d08376f4e9a6352dd"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga1cf43bea08101abb8b8cc7711c4c7165"><td class="memItemLeft" align="right" valign="top"><a id="ga1cf43bea08101abb8b8cc7711c4c7165"></a>
typedef struct clingo_propagate_control </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a></td></tr>
<tr class="memdesc:ga1cf43bea08101abb8b8cc7711c4c7165"><td class="mdescLeft"> </td><td class="mdescRight">This object can be used to add clauses and propagate literals while solving. <br /></td></tr>
<tr class="separator:ga1cf43bea08101abb8b8cc7711c4c7165"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga67bdda9d9d2ddaa31acc41e5a569db33"><td class="memItemLeft" align="right" valign="top"><a id="ga67bdda9d9d2ddaa31acc41e5a569db33"></a>
typedef bool(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga67bdda9d9d2ddaa31acc41e5a569db33">clingo_propagator_init_callback_t</a>) (<a class="el" href="group__Propagator.html#ga640db8ba73adaddd5dbe50b572b77f25">clingo_propagate_init_t</a> *, void *)</td></tr>
<tr class="memdesc:ga67bdda9d9d2ddaa31acc41e5a569db33"><td class="mdescLeft"> </td><td class="mdescRight">Typedef for <a class="el" href="structclingo__propagator.html#a456c4c0e3ed629e8b548f7cc4fd830a1">clingo_propagator::init()</a>. <br /></td></tr>
<tr class="separator:ga67bdda9d9d2ddaa31acc41e5a569db33"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae870d426cc8f9c3db7b5aabb958c5931"><td class="memItemLeft" align="right" valign="top"><a id="gae870d426cc8f9c3db7b5aabb958c5931"></a>
typedef bool(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gae870d426cc8f9c3db7b5aabb958c5931">clingo_propagator_propagate_callback_t</a>) (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> const *, size_t, void *)</td></tr>
<tr class="memdesc:gae870d426cc8f9c3db7b5aabb958c5931"><td class="mdescLeft"> </td><td class="mdescRight">Typedef for <a class="el" href="structclingo__propagator.html#a666b871bab495a9e5904b6109c92feda">clingo_propagator::propagate()</a>. <br /></td></tr>
<tr class="separator:gae870d426cc8f9c3db7b5aabb958c5931"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae472d20ebae3559bdd3e1eb1f2a48791"><td class="memItemLeft" align="right" valign="top"><a id="gae472d20ebae3559bdd3e1eb1f2a48791"></a>
typedef bool(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gae472d20ebae3559bdd3e1eb1f2a48791">clingo_propagator_undo_callback_t</a>) (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> const *, size_t, void *)</td></tr>
<tr class="memdesc:gae472d20ebae3559bdd3e1eb1f2a48791"><td class="mdescLeft"> </td><td class="mdescRight">Typedef for <a class="el" href="structclingo__propagator.html#a8108d1789d05862f636c6ca9328d4b88">clingo_propagator::undo()</a>. <br /></td></tr>
<tr class="separator:gae472d20ebae3559bdd3e1eb1f2a48791"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa1073f823a56901887b3c387481ce4be"><td class="memItemLeft" align="right" valign="top"><a id="gaa1073f823a56901887b3c387481ce4be"></a>
typedef bool(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gaa1073f823a56901887b3c387481ce4be">clingo_propagator_check_callback_t</a>) (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *, void *)</td></tr>
<tr class="memdesc:gaa1073f823a56901887b3c387481ce4be"><td class="mdescLeft"> </td><td class="mdescRight">Typedef for <a class="el" href="structclingo__propagator.html#a3a883ef32f49030ae701550bbdbcf4a0">clingo_propagator::check()</a>. <br /></td></tr>
<tr class="separator:gaa1073f823a56901887b3c387481ce4be"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gabac80b6c8427075a53e25c7e6dab4c89"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="structclingo__propagator.html">clingo_propagator</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gabac80b6c8427075a53e25c7e6dab4c89">clingo_propagator_t</a></td></tr>
<tr class="memdesc:gabac80b6c8427075a53e25c7e6dab4c89"><td class="mdescLeft"> </td><td class="mdescRight">An instance of this struct has to be registered with a solver to implement a custom propagator. <a href="#gabac80b6c8427075a53e25c7e6dab4c89">More...</a><br /></td></tr>
<tr class="separator:gabac80b6c8427075a53e25c7e6dab4c89"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr class="memitem:ga29aa0cd73225dac59890b34f2db57eab"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga29aa0cd73225dac59890b34f2db57eab">clingo_propagator_check_mode</a> { <a class="el" href="group__Propagator.html#gga29aa0cd73225dac59890b34f2db57eaba4c6eae45ff39bc7aa2327316f7ca2e84">clingo_propagator_check_mode_none</a> = 0,
<a class="el" href="group__Propagator.html#gga29aa0cd73225dac59890b34f2db57eabab1341dec2c650a029030c3da5d75af44">clingo_propagator_check_mode_total</a> = 1,
<a class="el" href="group__Propagator.html#gga29aa0cd73225dac59890b34f2db57eabaa161d549a95b92c1ebd985834f34deb6">clingo_propagator_check_mode_fixpoint</a> = 2
}<tr class="memdesc:ga29aa0cd73225dac59890b34f2db57eab"><td class="mdescLeft"> </td><td class="mdescRight">Supported check modes for propagators. <a href="group__Propagator.html#ga29aa0cd73225dac59890b34f2db57eab">More...</a><br /></td></tr>
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<tr class="memitem:gab158fba808ea7d1eee7f955858aca36c"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gab158fba808ea7d1eee7f955858aca36c">clingo_clause_type</a> { <a class="el" href="group__Propagator.html#ggab158fba808ea7d1eee7f955858aca36ca35c9cfe61e2130b0292866860218ee58">clingo_clause_type_learnt</a> = 0,
<a class="el" href="group__Propagator.html#ggab158fba808ea7d1eee7f955858aca36caa2c3713451094ee97afb514312822cbc">clingo_clause_type_static</a> = 1,
<a class="el" href="group__Propagator.html#ggab158fba808ea7d1eee7f955858aca36ca685f2488ec3067d910c57b5c2fbdb96d">clingo_clause_type_volatile</a> = 2,
<a class="el" href="group__Propagator.html#ggab158fba808ea7d1eee7f955858aca36cacbc856b61916be9757c7bd9f231f0c03">clingo_clause_type_volatile_static</a> = 3
}<tr class="memdesc:gab158fba808ea7d1eee7f955858aca36c"><td class="mdescLeft"> </td><td class="mdescRight">Enumeration of clause types determining the lifetime of a clause. <a href="group__Propagator.html#gab158fba808ea7d1eee7f955858aca36c">More...</a><br /></td></tr>
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Initialization Functions</h2></td></tr>
<tr class="memitem:ga24ffe5c89ab1629271e53be60c7cff9d"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga24ffe5c89ab1629271e53be60c7cff9d">clingo_propagate_init_solver_literal</a> (<a class="el" href="group__Propagator.html#ga640db8ba73adaddd5dbe50b572b77f25">clingo_propagate_init_t</a> *init, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> aspif_literal, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> *solver_literal)</td></tr>
<tr class="memdesc:ga24ffe5c89ab1629271e53be60c7cff9d"><td class="mdescLeft"> </td><td class="mdescRight">Map the given program literal or condition id to its solver literal. <a href="#ga24ffe5c89ab1629271e53be60c7cff9d">More...</a><br /></td></tr>
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<tr class="memitem:gab4a0f0767529ad000f5d80b56b74104f"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gab4a0f0767529ad000f5d80b56b74104f">clingo_propagate_init_add_watch</a> (<a class="el" href="group__Propagator.html#ga640db8ba73adaddd5dbe50b572b77f25">clingo_propagate_init_t</a> *init, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> solver_literal)</td></tr>
<tr class="memdesc:gab4a0f0767529ad000f5d80b56b74104f"><td class="mdescLeft"> </td><td class="mdescRight">Add a watch for the solver literal in the given phase. <a href="#gab4a0f0767529ad000f5d80b56b74104f">More...</a><br /></td></tr>
<tr class="separator:gab4a0f0767529ad000f5d80b56b74104f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga7f5f0a59fe5db93356598918878a9605"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga7f5f0a59fe5db93356598918878a9605">clingo_propagate_init_symbolic_atoms</a> (<a class="el" href="group__Propagator.html#ga640db8ba73adaddd5dbe50b572b77f25">clingo_propagate_init_t</a> *init, <a class="el" href="group__SymbolicAtoms.html#ga48f4026c13a49553efce213e76ab32aa">clingo_symbolic_atoms_t</a> **atoms)</td></tr>
<tr class="memdesc:ga7f5f0a59fe5db93356598918878a9605"><td class="mdescLeft"> </td><td class="mdescRight">Get an object to inspect the symbolic atoms. <a href="#ga7f5f0a59fe5db93356598918878a9605">More...</a><br /></td></tr>
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<tr class="memitem:gae7e85aca811bb2138b5db61ba25eccc6"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gae7e85aca811bb2138b5db61ba25eccc6">clingo_propagate_init_theory_atoms</a> (<a class="el" href="group__Propagator.html#ga640db8ba73adaddd5dbe50b572b77f25">clingo_propagate_init_t</a> *init, <a class="el" href="group__TheoryAtoms.html#gab49a73a85ca5a2448e2c7ddcdb489eeb">clingo_theory_atoms_t</a> **atoms)</td></tr>
<tr class="memdesc:gae7e85aca811bb2138b5db61ba25eccc6"><td class="mdescLeft"> </td><td class="mdescRight">Get an object to inspect the theory atoms. <a href="#gae7e85aca811bb2138b5db61ba25eccc6">More...</a><br /></td></tr>
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<tr class="memitem:gaf1c203c2a09e8a9da37b87c7bb0378be"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gaf1c203c2a09e8a9da37b87c7bb0378be">clingo_propagate_init_number_of_threads</a> (<a class="el" href="group__Propagator.html#ga640db8ba73adaddd5dbe50b572b77f25">clingo_propagate_init_t</a> *init)</td></tr>
<tr class="memdesc:gaf1c203c2a09e8a9da37b87c7bb0378be"><td class="mdescLeft"> </td><td class="mdescRight">Get the number of threads used in subsequent solving. <a href="#gaf1c203c2a09e8a9da37b87c7bb0378be">More...</a><br /></td></tr>
<tr class="separator:gaf1c203c2a09e8a9da37b87c7bb0378be"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa268d0dcfc313360d57b9164fea21074"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gaa268d0dcfc313360d57b9164fea21074">clingo_propagate_init_set_check_mode</a> (<a class="el" href="group__Propagator.html#ga640db8ba73adaddd5dbe50b572b77f25">clingo_propagate_init_t</a> *init, <a class="el" href="group__Propagator.html#ga84a31c95e48053589feecff95f00d894">clingo_propagator_check_mode_t</a> mode)</td></tr>
<tr class="memdesc:gaa268d0dcfc313360d57b9164fea21074"><td class="mdescLeft"> </td><td class="mdescRight">Configure when to call the check method of the propagator. <a href="#gaa268d0dcfc313360d57b9164fea21074">More...</a><br /></td></tr>
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<tr class="memitem:ga5ad3c567e6a74eab3036760e8271fcf3"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT <a class="el" href="group__Propagator.html#ga84a31c95e48053589feecff95f00d894">clingo_propagator_check_mode_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga5ad3c567e6a74eab3036760e8271fcf3">clingo_propagate_init_get_check_mode</a> (<a class="el" href="group__Propagator.html#ga640db8ba73adaddd5dbe50b572b77f25">clingo_propagate_init_t</a> *init)</td></tr>
<tr class="memdesc:ga5ad3c567e6a74eab3036760e8271fcf3"><td class="mdescLeft"> </td><td class="mdescRight">Get the current check mode of the propagator. <a href="#ga5ad3c567e6a74eab3036760e8271fcf3">More...</a><br /></td></tr>
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Assignment Functions</h2></td></tr>
<tr class="memitem:gaf025f2b4975950ebb259b8ff3ea51a63"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gaf025f2b4975950ebb259b8ff3ea51a63">clingo_assignment_decision_level</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment)</td></tr>
<tr class="memdesc:gaf025f2b4975950ebb259b8ff3ea51a63"><td class="mdescLeft"> </td><td class="mdescRight">Get the current decision level. <a href="#gaf025f2b4975950ebb259b8ff3ea51a63">More...</a><br /></td></tr>
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<tr class="memitem:ga66c4d42854188cbc06625d6bb34e860b"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga66c4d42854188cbc06625d6bb34e860b">clingo_assignment_has_conflict</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment)</td></tr>
<tr class="memdesc:ga66c4d42854188cbc06625d6bb34e860b"><td class="mdescLeft"> </td><td class="mdescRight">Check if the given assignment is conflicting. <a href="#ga66c4d42854188cbc06625d6bb34e860b">More...</a><br /></td></tr>
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<tr class="memitem:gaf8459395e3c0c496f2348d8cfda6e9a0"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gaf8459395e3c0c496f2348d8cfda6e9a0">clingo_assignment_has_literal</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> literal)</td></tr>
<tr class="memdesc:gaf8459395e3c0c496f2348d8cfda6e9a0"><td class="mdescLeft"> </td><td class="mdescRight">Check if the given literal is part of a (partial) assignment. <a href="#gaf8459395e3c0c496f2348d8cfda6e9a0">More...</a><br /></td></tr>
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<tr class="memitem:gacbc06aa3f2bdd2d6068a49cc00bb215e"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gacbc06aa3f2bdd2d6068a49cc00bb215e">clingo_assignment_level</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> literal, uint32_t *level)</td></tr>
<tr class="memdesc:gacbc06aa3f2bdd2d6068a49cc00bb215e"><td class="mdescLeft"> </td><td class="mdescRight">Determine the decision level of a given literal. <a href="#gacbc06aa3f2bdd2d6068a49cc00bb215e">More...</a><br /></td></tr>
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<tr class="memitem:gaec5175e3a074bbbf01463288dbdbfd25"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gaec5175e3a074bbbf01463288dbdbfd25">clingo_assignment_decision</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment, uint32_t level, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> *literal)</td></tr>
<tr class="memdesc:gaec5175e3a074bbbf01463288dbdbfd25"><td class="mdescLeft"> </td><td class="mdescRight">Determine the decision literal given a decision level. <a href="#gaec5175e3a074bbbf01463288dbdbfd25">More...</a><br /></td></tr>
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<tr class="memitem:ga35389f7d35d0d4ebb261dffc430342bd"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga35389f7d35d0d4ebb261dffc430342bd">clingo_assignment_is_fixed</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> literal, bool *is_fixed)</td></tr>
<tr class="memdesc:ga35389f7d35d0d4ebb261dffc430342bd"><td class="mdescLeft"> </td><td class="mdescRight">Check if a literal has a fixed truth value. <a href="#ga35389f7d35d0d4ebb261dffc430342bd">More...</a><br /></td></tr>
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<tr class="memitem:gaa603fb6d266e39431fd6dcbe7a9308c5"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gaa603fb6d266e39431fd6dcbe7a9308c5">clingo_assignment_is_true</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> literal, bool *is_true)</td></tr>
<tr class="memdesc:gaa603fb6d266e39431fd6dcbe7a9308c5"><td class="mdescLeft"> </td><td class="mdescRight">Check if a literal is true. <a href="#gaa603fb6d266e39431fd6dcbe7a9308c5">More...</a><br /></td></tr>
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<tr class="memitem:ga5843848272d9a23b4e98a08bb7b81a27"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga5843848272d9a23b4e98a08bb7b81a27">clingo_assignment_is_false</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> literal, bool *is_false)</td></tr>
<tr class="memdesc:ga5843848272d9a23b4e98a08bb7b81a27"><td class="mdescLeft"> </td><td class="mdescRight">Check if a literal has a fixed truth value. <a href="#ga5843848272d9a23b4e98a08bb7b81a27">More...</a><br /></td></tr>
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<tr class="memitem:gae44fcb44f777c5cd9fbcf8f46af1aeac"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gae44fcb44f777c5cd9fbcf8f46af1aeac">clingo_assignment_truth_value</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> literal, <a class="el" href="group__BasicTypes.html#gaa0ab8583c1ef07fe6bc362277506b867">clingo_truth_value_t</a> *value)</td></tr>
<tr class="memdesc:gae44fcb44f777c5cd9fbcf8f46af1aeac"><td class="mdescLeft"> </td><td class="mdescRight">Determine the truth value of a given literal. <a href="#gae44fcb44f777c5cd9fbcf8f46af1aeac">More...</a><br /></td></tr>
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<tr class="memitem:ga9bed72eba3951e240f9253f36f6d7284"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga9bed72eba3951e240f9253f36f6d7284">clingo_assignment_size</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment)</td></tr>
<tr class="memdesc:ga9bed72eba3951e240f9253f36f6d7284"><td class="mdescLeft"> </td><td class="mdescRight">The number of assigned literals in the assignment. <a href="#ga9bed72eba3951e240f9253f36f6d7284">More...</a><br /></td></tr>
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<tr class="memitem:gad7db7e4e80655ddb8db4d620c2a229e7"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gad7db7e4e80655ddb8db4d620c2a229e7">clingo_assignment_max_size</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment)</td></tr>
<tr class="memdesc:gad7db7e4e80655ddb8db4d620c2a229e7"><td class="mdescLeft"> </td><td class="mdescRight">The maximum size of the assignment (if all literals are assigned). <a href="#gad7db7e4e80655ddb8db4d620c2a229e7">More...</a><br /></td></tr>
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<tr class="memitem:gaf2379c8f2b6f3fc21a85168ab5d69f15"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gaf2379c8f2b6f3fc21a85168ab5d69f15">clingo_assignment_is_total</a> (<a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> *assignment)</td></tr>
<tr class="memdesc:gaf2379c8f2b6f3fc21a85168ab5d69f15"><td class="mdescLeft"> </td><td class="mdescRight">Check if the assignmen is total, i.e. <a href="#gaf2379c8f2b6f3fc21a85168ab5d69f15">More...</a><br /></td></tr>
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Propagation Functions</h2></td></tr>
<tr class="memitem:gafc162fc6dd12dbbf1c39c0562e3533c3"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT <a class="el" href="group__BasicTypes.html#gac7aaf88deb591e91b94ff38aa1e3472e">clingo_id_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gafc162fc6dd12dbbf1c39c0562e3533c3">clingo_propagate_control_thread_id</a> (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *control)</td></tr>
<tr class="memdesc:gafc162fc6dd12dbbf1c39c0562e3533c3"><td class="mdescLeft"> </td><td class="mdescRight">Get the id of the underlying solver thread. <a href="#gafc162fc6dd12dbbf1c39c0562e3533c3">More...</a><br /></td></tr>
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<tr class="memitem:gad4a8b1cd71a1521aeab061c8921c3435"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT <a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#gad4a8b1cd71a1521aeab061c8921c3435">clingo_propagate_control_assignment</a> (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *control)</td></tr>
<tr class="memdesc:gad4a8b1cd71a1521aeab061c8921c3435"><td class="mdescLeft"> </td><td class="mdescRight">Get the assignment associated with the underlying solver. <a href="#gad4a8b1cd71a1521aeab061c8921c3435">More...</a><br /></td></tr>
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<tr class="memitem:ga91744ae31c10565d85154330e2018709"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga91744ae31c10565d85154330e2018709">clingo_propagate_control_add_literal</a> (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *control, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> *result)</td></tr>
<tr class="memdesc:ga91744ae31c10565d85154330e2018709"><td class="mdescLeft"> </td><td class="mdescRight">Adds a new volatile literal to the underlying solver thread. <a href="#ga91744ae31c10565d85154330e2018709">More...</a><br /></td></tr>
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<tr class="memitem:ga0d0af5f7f445bddfa1b262efd14150b0"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga0d0af5f7f445bddfa1b262efd14150b0">clingo_propagate_control_add_watch</a> (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *control, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> literal)</td></tr>
<tr class="memdesc:ga0d0af5f7f445bddfa1b262efd14150b0"><td class="mdescLeft"> </td><td class="mdescRight">Add a watch for the solver literal in the given phase. <a href="#ga0d0af5f7f445bddfa1b262efd14150b0">More...</a><br /></td></tr>
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<tr class="memitem:ga4b0f2565b9fcd326dd05e3f4dfd7045f"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga4b0f2565b9fcd326dd05e3f4dfd7045f">clingo_propagate_control_has_watch</a> (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *control, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> literal)</td></tr>
<tr class="memdesc:ga4b0f2565b9fcd326dd05e3f4dfd7045f"><td class="mdescLeft"> </td><td class="mdescRight">Check whether a literal is watched in the current solver thread. <a href="#ga4b0f2565b9fcd326dd05e3f4dfd7045f">More...</a><br /></td></tr>
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<tr class="memitem:ga5eafff7defcfda57dda6310b1cfcebb3"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga5eafff7defcfda57dda6310b1cfcebb3">clingo_propagate_control_remove_watch</a> (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *control, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> literal)</td></tr>
<tr class="memdesc:ga5eafff7defcfda57dda6310b1cfcebb3"><td class="mdescLeft"> </td><td class="mdescRight">Removes the watch (if any) for the given solver literal. <a href="#ga5eafff7defcfda57dda6310b1cfcebb3">More...</a><br /></td></tr>
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<tr class="memitem:ga45c65882cf55edcf8782f2ce13d66e2b"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga45c65882cf55edcf8782f2ce13d66e2b">clingo_propagate_control_add_clause</a> (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *control, <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> const *clause, size_t size, <a class="el" href="group__Propagator.html#gac68cd9a38909ef2d08376f4e9a6352dd">clingo_clause_type_t</a> type, bool *result)</td></tr>
<tr class="memdesc:ga45c65882cf55edcf8782f2ce13d66e2b"><td class="mdescLeft"> </td><td class="mdescRight">Add the given clause to the solver. <a href="#ga45c65882cf55edcf8782f2ce13d66e2b">More...</a><br /></td></tr>
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<tr class="memitem:ga1e5504a8332ed8c453197046d201cd4b"><td class="memItemLeft" align="right" valign="top">CLINGO_VISIBILITY_DEFAULT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Propagator.html#ga1e5504a8332ed8c453197046d201cd4b">clingo_propagate_control_propagate</a> (<a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> *control, bool *result)</td></tr>
<tr class="memdesc:ga1e5504a8332ed8c453197046d201cd4b"><td class="mdescLeft"> </td><td class="mdescRight">Propagate implied literals (resulting from added clauses). <a href="#ga1e5504a8332ed8c453197046d201cd4b">More...</a><br /></td></tr>
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<h2 class="groupheader">Typedef Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ga6198e3190869e937ca7135e5314ddf26">◆ </a></span>clingo_assignment_t</h2>
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<td class="memname">typedef struct clingo_assignment <a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a></td>
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<p>Represents a (partial) assignment of a particular solver. </p>
<p>An assignment assigns truth values to a set of literals. A literal is assigned to either <a class="el" href="group__Propagator.html#gae44fcb44f777c5cd9fbcf8f46af1aeac">true or false, or is unassigned</a>. Furthermore, each assigned literal is associated with a <a class="el" href="group__Propagator.html#gacbc06aa3f2bdd2d6068a49cc00bb215e">decision level</a>. There is exactly one <a class="el" href="group__Propagator.html#gaec5175e3a074bbbf01463288dbdbfd25">decision literal</a> for each decision level greater than zero. Assignments to all other literals on the same level are consequences implied by the current and possibly previous decisions. Assignments on level zero are immediate consequences of the current program. Decision levels are consecutive numbers starting with zero up to and including the <a class="el" href="group__Propagator.html#gaf025f2b4975950ebb259b8ff3ea51a63">current decision level</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga640db8ba73adaddd5dbe50b572b77f25">◆ </a></span>clingo_propagate_init_t</h2>
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<td class="memname">typedef struct clingo_propagate_init <a class="el" href="group__Propagator.html#ga640db8ba73adaddd5dbe50b572b77f25">clingo_propagate_init_t</a></td>
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<p>Object to initialize a user-defined propagator before each solving step. </p>
<p>Each <a class="el" href="group__SymbolicAtoms.html">symbolic</a> or <a class="el" href="group__TheoryAtoms.html">theory atom</a> is uniquely associated with an aspif atom in form of a positive integer (<a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a>). Aspif literals additionally are signed to represent default negation. Furthermore, there are non-zero integer solver literals (also represented using <a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a>). There is a surjective mapping from program atoms to solver literals.</p>
<p>All methods called during propagation use solver literals whereas <a class="el" href="group__SymbolicAtoms.html#gaa11e6e579cbd4c51f2551373c9700459" title="Returns the (numeric) aspif literal corresponding to the given symbolic atom. ">clingo_symbolic_atoms_literal()</a> and <a class="el" href="group__TheoryAtoms.html#ga541a77a95358d12e9d0e82bd8ab35cf4" title="Get the aspif literal associated with the given theory atom. ">clingo_theory_atoms_atom_literal()</a> return program literals. The function <a class="el" href="group__Propagator.html#ga24ffe5c89ab1629271e53be60c7cff9d" title="Map the given program literal or condition id to its solver literal. ">clingo_propagate_init_solver_literal()</a> can be used to map program literals or <a class="el" href="group__TheoryAtoms.html#gaa27a3b2a973f269932e0bb86710ca904">condition ids</a> to solver literals. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gabac80b6c8427075a53e25c7e6dab4c89">◆ </a></span>clingo_propagator_t</h2>
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<td class="memname">typedef struct <a class="el" href="structclingo__propagator.html">clingo_propagator</a> <a class="el" href="group__Propagator.html#gabac80b6c8427075a53e25c7e6dab4c89">clingo_propagator_t</a></td>
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<p>An instance of this struct has to be registered with a solver to implement a custom propagator. </p>
<p>Not all callbacks have to be implemented and can be set to NULL if not needed. </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="group__Propagator.html" title="Extend the search with propagators for arbitrary theories. ">Theory Propagation</a> </dd></dl>
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<h2 class="groupheader">Enumeration Type Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#gab158fba808ea7d1eee7f955858aca36c">◆ </a></span>clingo_clause_type</h2>
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<td class="memname">enum <a class="el" href="group__Propagator.html#gab158fba808ea7d1eee7f955858aca36c">clingo_clause_type</a></td>
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<p>Enumeration of clause types determining the lifetime of a clause. </p>
<p>Clauses in the solver are either cleaned up based on a configurable deletion policy or at the end of a solving step. The values of this enumeration determine if a clause is subject to one of the above deletion strategies. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="ggab158fba808ea7d1eee7f955858aca36ca35c9cfe61e2130b0292866860218ee58"></a>clingo_clause_type_learnt </td><td class="fielddoc"><p>clause is subject to the solvers deletion policy </p>
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<tr><td class="fieldname"><a id="ggab158fba808ea7d1eee7f955858aca36ca685f2488ec3067d910c57b5c2fbdb96d"></a>clingo_clause_type_volatile </td><td class="fielddoc"><p>like <a class="el" href="group__Propagator.html#ggab158fba808ea7d1eee7f955858aca36ca35c9cfe61e2130b0292866860218ee58" title="clause is subject to the solvers deletion policy ">clingo_clause_type_learnt</a> but the clause is deleted after a solving step </p>
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<tr><td class="fieldname"><a id="ggab158fba808ea7d1eee7f955858aca36cacbc856b61916be9757c7bd9f231f0c03"></a>clingo_clause_type_volatile_static </td><td class="fielddoc"><p>like <a class="el" href="group__Propagator.html#ggab158fba808ea7d1eee7f955858aca36caa2c3713451094ee97afb514312822cbc" title="clause is not subject to the solvers deletion policy ">clingo_clause_type_static</a> but the clause is deleted after a solving step </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga29aa0cd73225dac59890b34f2db57eab">◆ </a></span>clingo_propagator_check_mode</h2>
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<td class="memname">enum <a class="el" href="group__Propagator.html#ga29aa0cd73225dac59890b34f2db57eab">clingo_propagator_check_mode</a></td>
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<p>Supported check modes for propagators. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga29aa0cd73225dac59890b34f2db57eaba4c6eae45ff39bc7aa2327316f7ca2e84"></a>clingo_propagator_check_mode_none </td><td class="fielddoc"><p>do not call <a class="el" href="structclingo__propagator.html#a3a883ef32f49030ae701550bbdbcf4a0">clingo_propagator::check()</a> at all </p>
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<tr><td class="fieldname"><a id="gga29aa0cd73225dac59890b34f2db57eabab1341dec2c650a029030c3da5d75af44"></a>clingo_propagator_check_mode_total </td><td class="fielddoc"><p>call <a class="el" href="structclingo__propagator.html#a3a883ef32f49030ae701550bbdbcf4a0">clingo_propagator::check()</a> on total assignment </p>
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<tr><td class="fieldname"><a id="gga29aa0cd73225dac59890b34f2db57eabaa161d549a95b92c1ebd985834f34deb6"></a>clingo_propagator_check_mode_fixpoint </td><td class="fielddoc"><p>call <a class="el" href="structclingo__propagator.html#a3a883ef32f49030ae701550bbdbcf4a0">clingo_propagator::check()</a> on propagation fixpoints </p>
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<h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#gaec5175e3a074bbbf01463288dbdbfd25">◆ </a></span>clingo_assignment_decision()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_assignment_decision </td>
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<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
<td class="paramname"><em>assignment</em>, </td>
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<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> * </td>
<td class="paramname"><em>literal</em> </td>
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<p>Determine the decision literal given a decision level. </p>
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<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target assignment </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">level</td><td>the level </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">literal</td><td>the resulting literal </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>whether the call was successful </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#gaf025f2b4975950ebb259b8ff3ea51a63">◆ </a></span>clingo_assignment_decision_level()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT uint32_t clingo_assignment_decision_level </td>
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<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
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<p>Get the current decision level. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target assignment </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>the decision level </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga66c4d42854188cbc06625d6bb34e860b">◆ </a></span>clingo_assignment_has_conflict()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_assignment_has_conflict </td>
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<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
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<p>Check if the given assignment is conflicting. </p>
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<dl class="section return"><dt>Returns</dt><dd>whether the assignment is conflicting </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#gaf8459395e3c0c496f2348d8cfda6e9a0">◆ </a></span>clingo_assignment_has_literal()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_assignment_has_literal </td>
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<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
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<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> </td>
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<p>Check if the given literal is part of a (partial) assignment. </p>
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<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target assignment </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">literal</td><td>the literal </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>whether the literal is valid </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5843848272d9a23b4e98a08bb7b81a27">◆ </a></span>clingo_assignment_is_false()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_assignment_is_false </td>
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<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
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<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> </td>
<td class="paramname"><em>literal</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool * </td>
<td class="paramname"><em>is_false</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
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<p>Check if a literal has a fixed truth value. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target assignment </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">literal</td><td>the literal </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">is_false</td><td>whether the literal is false </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>whether the call was successful </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="group__Propagator.html#gae44fcb44f777c5cd9fbcf8f46af1aeac" title="Determine the truth value of a given literal. ">clingo_assignment_truth_value()</a> </dd></dl>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga35389f7d35d0d4ebb261dffc430342bd">◆ </a></span>clingo_assignment_is_fixed()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_assignment_is_fixed </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
<td class="paramname"><em>assignment</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> </td>
<td class="paramname"><em>literal</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool * </td>
<td class="paramname"><em>is_fixed</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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<p>Check if a literal has a fixed truth value. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target assignment </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">literal</td><td>the literal </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">is_fixed</td><td>whether the literal is fixed </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>whether the call was successful </dd></dl>
</div>
</div>
<a id="gaf2379c8f2b6f3fc21a85168ab5d69f15"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaf2379c8f2b6f3fc21a85168ab5d69f15">◆ </a></span>clingo_assignment_is_total()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_assignment_is_total </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
<td class="paramname"><em>assignment</em></td><td>)</td>
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<p>Check if the assignmen is total, i.e. </p>
<ul>
<li>size == max_size.</li>
</ul>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>wheather the assignment is total </dd></dl>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#gaa603fb6d266e39431fd6dcbe7a9308c5">◆ </a></span>clingo_assignment_is_true()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_assignment_is_true </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
<td class="paramname"><em>assignment</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> </td>
<td class="paramname"><em>literal</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool * </td>
<td class="paramname"><em>is_true</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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<p>Check if a literal is true. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target assignment </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">literal</td><td>the literal </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">is_true</td><td>whether the literal is true </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>whether the call was successful </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="group__Propagator.html#gae44fcb44f777c5cd9fbcf8f46af1aeac" title="Determine the truth value of a given literal. ">clingo_assignment_truth_value()</a> </dd></dl>
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<a id="gacbc06aa3f2bdd2d6068a49cc00bb215e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gacbc06aa3f2bdd2d6068a49cc00bb215e">◆ </a></span>clingo_assignment_level()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_assignment_level </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
<td class="paramname"><em>assignment</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> </td>
<td class="paramname"><em>literal</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t * </td>
<td class="paramname"><em>level</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
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<p>Determine the decision level of a given literal. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target assignment </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">literal</td><td>the literal </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">level</td><td>the resulting level </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>whether the call was successful </dd></dl>
</div>
</div>
<a id="gad7db7e4e80655ddb8db4d620c2a229e7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gad7db7e4e80655ddb8db4d620c2a229e7">◆ </a></span>clingo_assignment_max_size()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT size_t clingo_assignment_max_size </td>
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<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
<td class="paramname"><em>assignment</em></td><td>)</td>
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<p>The maximum size of the assignment (if all literals are assigned). </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the maximum size </dd></dl>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga9bed72eba3951e240f9253f36f6d7284">◆ </a></span>clingo_assignment_size()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT size_t clingo_assignment_size </td>
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<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
<td class="paramname"><em>assignment</em></td><td>)</td>
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<p>The number of assigned literals in the assignment. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the number of literals </dd></dl>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#gae44fcb44f777c5cd9fbcf8f46af1aeac">◆ </a></span>clingo_assignment_truth_value()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_assignment_truth_value </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a> * </td>
<td class="paramname"><em>assignment</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> </td>
<td class="paramname"><em>literal</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa0ab8583c1ef07fe6bc362277506b867">clingo_truth_value_t</a> * </td>
<td class="paramname"><em>value</em> </td>
</tr>
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<td></td>
<td>)</td>
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<p>Determine the truth value of a given literal. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">assignment</td><td>the target assignment </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">literal</td><td>the literal </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">value</td><td>the resulting truth value </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>whether the call was successful </dd></dl>
</div>
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<a id="ga45c65882cf55edcf8782f2ce13d66e2b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga45c65882cf55edcf8782f2ce13d66e2b">◆ </a></span>clingo_propagate_control_add_clause()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_propagate_control_add_clause </td>
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<td class="paramtype"><a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> * </td>
<td class="paramname"><em>control</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> const * </td>
<td class="paramname"><em>clause</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>size</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__Propagator.html#gac68cd9a38909ef2d08376f4e9a6352dd">clingo_clause_type_t</a> </td>
<td class="paramname"><em>type</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool * </td>
<td class="paramname"><em>result</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>Add the given clause to the solver. </p>
<p>This method sets its result to false if the current propagation must be stopped for the solver to backtrack.</p>
<dl class="section attention"><dt>Attention</dt><dd>No further calls on the control object or functions on the assignment should be called when the result of this method is false.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">control</td><td>the target </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">clause</td><td>the clause to add </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">size</td><td>the size of the clause </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">type</td><td>the clause type determining its lifetime </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">result</td><td>result indicating whether propagation has to be stopped </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>whether the call was successful; might set one of the following error codes:<ul>
<li><a class="el" href="group__BasicTypes.html#gga5adba1f5e366e7489ac4a3fb5266dba6aa14a0926eb3e653fcc13299b33d8d348" title="memory could not be allocated ">clingo_error_bad_alloc</a> </li>
</ul>
</dd></dl>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="propagator_8c-example.html#a17">propagator.c</a>.</dd>
</dl>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga91744ae31c10565d85154330e2018709">◆ </a></span>clingo_propagate_control_add_literal()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_propagate_control_add_literal </td>
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<td class="paramtype"><a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> * </td>
<td class="paramname"><em>control</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> * </td>
<td class="paramname"><em>result</em> </td>
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<p>Adds a new volatile literal to the underlying solver thread. </p>
<dl class="section attention"><dt>Attention</dt><dd>The literal is only valid within the current solving step and solver thread. All volatile literals and clauses involving a volatile literal are deleted after the current search.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">control</td><td>the target </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">result</td><td>the (positive) solver literal </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>whether the call was successful; might set one of the following error codes:<ul>
<li><a class="el" href="group__BasicTypes.html#gga5adba1f5e366e7489ac4a3fb5266dba6aa14a0926eb3e653fcc13299b33d8d348" title="memory could not be allocated ">clingo_error_bad_alloc</a></li>
<li><a class="el" href="group__BasicTypes.html#gga5adba1f5e366e7489ac4a3fb5266dba6a4aa101607590cdc8b4597d7c05e5f3af" title="wrong usage of the clingo API ">clingo_error_logic</a> if the assignment is conflicting </li>
</ul>
</dd></dl>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga0d0af5f7f445bddfa1b262efd14150b0">◆ </a></span>clingo_propagate_control_add_watch()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_propagate_control_add_watch </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> * </td>
<td class="paramname"><em>control</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> </td>
<td class="paramname"><em>literal</em> </td>
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<td>)</td>
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<p>Add a watch for the solver literal in the given phase. </p>
<dl class="section note"><dt>Note</dt><dd>Unlike <a class="el" href="group__Propagator.html#gab4a0f0767529ad000f5d80b56b74104f">clingo_propagate_init_add_watch()</a> this does not add a watch to all solver threads but just the current one.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">control</td><td>the target </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">literal</td><td>the literal to watch </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>whether the call was successful; might set one of the following error codes:<ul>
<li><a class="el" href="group__BasicTypes.html#gga5adba1f5e366e7489ac4a3fb5266dba6aa14a0926eb3e653fcc13299b33d8d348" title="memory could not be allocated ">clingo_error_bad_alloc</a></li>
<li><a class="el" href="group__BasicTypes.html#gga5adba1f5e366e7489ac4a3fb5266dba6a4aa101607590cdc8b4597d7c05e5f3af" title="wrong usage of the clingo API ">clingo_error_logic</a> if the literal is invalid </li>
</ul>
</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="group__Propagator.html#ga5eafff7defcfda57dda6310b1cfcebb3" title="Removes the watch (if any) for the given solver literal. ">clingo_propagate_control_remove_watch()</a> </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#gad4a8b1cd71a1521aeab061c8921c3435">◆ </a></span>clingo_propagate_control_assignment()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT <a class="el" href="group__Propagator.html#ga6198e3190869e937ca7135e5314ddf26">clingo_assignment_t</a>* clingo_propagate_control_assignment </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> * </td>
<td class="paramname"><em>control</em></td><td>)</td>
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<p>Get the assignment associated with the underlying solver. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">control</td><td>the target </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the assignment </dd></dl>
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<a id="ga4b0f2565b9fcd326dd05e3f4dfd7045f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga4b0f2565b9fcd326dd05e3f4dfd7045f">◆ </a></span>clingo_propagate_control_has_watch()</h2>
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<td class="memname">CLINGO_VISIBILITY_DEFAULT bool clingo_propagate_control_has_watch </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__Propagator.html#ga1cf43bea08101abb8b8cc7711c4c7165">clingo_propagate_control_t</a> * </td>
<td class="paramname"><em>control</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__BasicTypes.html#gaa95dd19334e536397bbad174c8fa4ff8">clingo_literal_t</a> </td>
<td class="paramname"><em>literal</em> </td>
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<tr>
<td></td>
<td>)</td>
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<p>Check whether a literal is watched in the current solver thread. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">control</td><td>the target </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">literal</td><td>the literal to check</td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>whether the literal is watched </dd></dl>
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<a id="ga1e5504a8332ed8c453197046d201cd4b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga1e5504a8332ed8c453197046d201cd4b">◆ </a></span>clingo_propagate_control_propagate()</h2>