Z3 sources

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

lib/cnf_params.h

@@ -0,0 +1,56 @@
+/*++
+Copyright (c) 2006 Microsoft Corporation
+
+Module Name:
+
+    cnf_params.h
+
+Abstract:
+
+    <abstract>
+
+Author:
+
+    Leonardo de Moura (leonardo) 2008-01-23.
+
+Revision History:
+
+--*/
+#ifndef _CNF_PARAMS_H_
+#define _CNF_PARAMS_H_
+
+#include"ini_file.h"
+
+/**
+   \brief CNF translation mode.  The cheapest mode is CNF_QUANT, and
+   the most expensive is CNF_FULL.
+*/
+enum cnf_mode {
+    CNF_DISABLED, /* CNF translator is disabled. 
+                     This mode is sufficient when using E-matching.
+                  */
+    CNF_QUANT, /* A subformula is put into CNF if it is inside of a
+                  quantifier.
+               
+                  This mode is sufficient when using Superposition
+                  Calculus.
+               */
+    CNF_OPPORTUNISTIC, /* a subformula is also put in CNF if it is cheap. */
+    CNF_FULL /* Everything is put into CNF, new names are introduced
+                if it is too expensive. */
+};
+
+struct cnf_params {
+    cnf_mode m_cnf_mode;
+    unsigned m_cnf_factor;
+    cnf_params():
+        m_cnf_mode(CNF_DISABLED),
+        m_cnf_factor(4) {
+    }
+    
+    void register_params(ini_params & p);
+};
+
+
+#endif /* _CNF_PARAMS_H_ */
+