Starting to work on trailing 0 analysis.

src/ast/rewriter/bv_trailing.h

@@ -0,0 +1,33 @@
+ /*++
+ Copyright (c) 2016 Microsoft Corporation
+
+ Module Name:
+
+  bv_trailing.h
+
+ Abstract:
+
+
+ Author:
+
+ Mikolas Janota (MikolasJanota)
+
+ Revision History:
+ --*/
+#ifndef BV_TRAILING_H_
+#define BV_TRAILING_H_
+#include"ast.h"
+#include"bv_rewriter.h"
+#include"rewriter_types.h"
+class bv_trailing {
+    public:
+        bv_trailing(ast_manager&m, mk_extract_proc& ep);
+        virtual ~bv_trailing();
+        void count_trailing(expr * e, unsigned& min, unsigned& max, unsigned depth);
+        br_status eq_remove_trailing(expr * e1, expr * e2,  expr_ref& result);
+        unsigned remove_trailing(expr * e, unsigned n, expr_ref& result, unsigned depth);
+    protected:
+        struct imp;
+        imp *        m_imp;
+};
+#endif /* BV_TRAILING_H_ */