Z3 sources

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

lib/propagate_ineqs_tactic.h

@@ -0,0 +1,42 @@
+/*++
+Copyright (c) 2012 Microsoft Corporation
+
+Module Name:
+
+    propagate_ineqs_tactic.h
+
+Abstract:
+
+    This tactic performs the following tasks:
+
+     - Propagate bounds using the bound_propagator.
+     - Eliminate subsumed inequalities.  
+       For example:
+          x - y >= 3
+          can be replaced with true if we know that
+          x >= 3 and y <= 0
+            
+     - Convert inequalities of the form p <= k and p >= k into p = k,
+       where p is a polynomial and k is a constant.
+
+    This strategy assumes the input is in arith LHS mode.
+    This can be achieved by using option :arith-lhs true in the
+    simplifier.
+     
+Author:
+
+    Leonardo (leonardo) 2012-02-19
+
+Notes:
+
+--*/
+#ifndef _PROPAGATE_INEQS_TACTIC_H_
+#define _PROPAGATE_INEQS_TACTIC_H_
+
+#include"params.h"
+class ast_manager;
+class tactic;
+
+tactic * mk_propagate_ineqs_tactic(ast_manager & m, params_ref const & p = params_ref());
+
+#endif