mv util/lp to math/lp

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

src/math/lp/signature_bound_evidence.h

@@ -0,0 +1,38 @@
+/*++
+Copyright (c) 2017 Microsoft Corporation
+
+Module Name:
+
+    <name>
+
+Abstract:
+
+    <abstract>
+
+Author:
+
+    Lev Nachmanson (levnach)
+
+Revision History:
+
+
+--*/
+#pragma once
+#include "math/lp/lp_settings.h"
+#include "math/lp/lar_constraints.h"
+namespace lp {
+struct bound_signature {
+    unsigned m_i;
+    bool m_at_low;
+    bound_signature(unsigned i, bool at_low) :m_i(i), m_at_low(m_at_low) {}
+    bool at_upper_bound() const { return !m_at_lower_bound;}
+    bool at_lower_bound() const { return m_at_low;}
+};
+template <typename X> 
+struct signature_bound_evidence {
+    vector<bound_signature> m_evidence;
+    unsigned m_j; // found new bound
+    bool m_lower_bound;    
+    X m_bound;
+};
+}