Add intblast solver

src/sat/smt/arith_value.h

@@ -0,0 +1,52 @@
+
+/*++
+Copyright (c) 2018 Microsoft Corporation
+
+Module Name:
+
+    arith_value.h
+
+Abstract:
+
+    Utility to extract arithmetic values from context.
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2018-12-08.
+
+Revision History:
+
+--*/
+#pragma once
+
+#include "ast/arith_decl_plugin.h"
+
+namespace euf {
+    class solver;
+}
+namespace arith {
+
+    class solver;
+
+    class arith_value {
+        euf::solver& s;
+        ast_manager& m;
+        arith_util a;
+        solver* as = nullptr;
+        void init();
+    public:
+        arith_value(euf::solver& s);
+        bool get_value(expr* e, rational& value);
+
+#if 0
+        bool get_lo_equiv(expr* e, rational& lo, bool& strict);
+        bool get_up_equiv(expr* e, rational& up, bool& strict);
+        bool get_lo(expr* e, rational& lo, bool& strict);
+        bool get_up(expr* e, rational& up, bool& strict);
+        bool get_value_equiv(expr* e, rational& value);
+        expr_ref get_lo(expr* e);
+        expr_ref get_up(expr* e);
+        expr_ref get_fixed(expr* e);
+#endif
+    };
+};