mv util/lp to math/lp

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

src/math/lp/lia_move.h

@@ -0,0 +1,52 @@
+/*++
+Copyright (c) 2017 Microsoft Corporation
+
+Module Name:
+
+    <name>
+
+Abstract:
+
+    <abstract>
+
+Author:
+    Nikolaj Bjorner (nbjorner)
+    Lev Nachmanson (levnach)
+
+Revision History:
+
+
+--*/
+#pragma once
+namespace lp {
+enum class lia_move {
+    sat,
+    branch,
+    cut,
+    conflict,
+    continue_with_check,
+    undef,
+    unsat
+};
+inline std::string lia_move_to_string(lia_move m) {
+    switch (m) {
+    case lia_move::sat:
+        return "sat";
+    case lia_move::branch:
+        return "branch";
+    case lia_move::cut:
+        return "cut";
+    case lia_move::conflict:
+        return "conflict";
+    case lia_move::continue_with_check:
+        return "continue_with_check";
+    case lia_move::undef:
+        return "undef";
+    case lia_move::unsat:
+        return "unsat";
+    default:
+        lp_assert(false);
+    };
+    return "strange";
+}
+}