mv util/lp to math/lp

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

src/math/lp/nla_solver.h

@@ -0,0 +1,46 @@
+/*++
+Copyright (c) 2017 Microsoft Corporation
+
+Module Name:
+
+    <name>
+
+Abstract:
+
+    <abstract>
+
+Author:
+    Nikolaj Bjorner (nbjorner)
+    Lev Nachmanson (levnach)
+
+Revision History:
+
+
+--*/
+#pragma once
+#include "util/vector.h"
+#include "math/lp/lp_settings.h"
+#include "util/rlimit.h"
+#include "util/params.h"
+#include "nlsat/nlsat_solver.h"
+#include "math/lp/lar_solver.h"
+#include "math/lp/monomial.h"
+#include "math/lp/nla_core.h"
+namespace nla {
+
+// nonlinear integer incremental linear solver
+class solver {
+    core* m_core;
+public:
+    void add_monomial(lp::var_index v, unsigned sz, lp::var_index const* vs);
+    
+    solver(lp::lar_solver& s);
+    ~solver();
+    inline core * get_core() { return m_core; } 
+    void push();
+    void pop(unsigned scopes);
+    bool need_check();
+    lbool check(vector<lemma>&);
+    std::ostream& display(std::ostream& out);
+};
+}