re-organize muz_qe into separate units

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/muz/transforms/dl_mk_scale.h

@@ -0,0 +1,53 @@
+/*++
+Copyright (c) 2013 Microsoft Corporation
+
+Module Name:
+
+    dl_mk_scale.h
+
+Abstract:
+
+    Add scale factor to linear (Real) arithemetic Horn clauses.
+    The transformation replaces occurrences of isolated constants by
+    a scale multiplied to each constant. 
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2013-08-19
+
+Revision History:
+
+--*/
+#ifndef _DL_MK_SCALE_H_
+#define _DL_MK_SCALE_H_
+
+#include"dl_rule_transformer.h"
+#include"arith_decl_plugin.h"
+
+namespace datalog {
+
+    class mk_scale : public rule_transformer::plugin {
+
+        class scale_model_converter;
+
+        ast_manager& m;
+        context&     m_ctx;
+        arith_util   a;
+        expr_ref_vector m_trail;
+        app_ref_vector m_eqs;
+        obj_map<expr, expr*> m_cache;
+        scale_model_converter* m_mc;
+
+        expr*   linearize(unsigned num_vars, expr* e);
+        app_ref mk_pred(unsigned num_vars, app* q);
+        app_ref mk_constraint(unsigned num_vars, app* q);
+    public:
+        mk_scale(context & ctx, unsigned priority = 33039);
+        virtual ~mk_scale();        
+        rule_set * operator()(rule_set const & source);
+    };
+
+};
+
+#endif /* _DL_MK_SCALE_H_ */
+