old_params ==> front_end_params. Isolated abstract solver interface

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

src/front_end_params/dyn_ack_params.h

@@ -0,0 +1,53 @@
+/*++
+Copyright (c) 2006 Microsoft Corporation
+
+Module Name:
+
+    dyn_ack_params.h
+
+Abstract:
+
+    <abstract>
+
+Author:
+
+    Leonardo de Moura (leonardo) 2007-05-18.
+
+Revision History:
+
+--*/
+#ifndef _DYN_ACK_PARAMS_H_
+#define _DYN_ACK_PARAMS_H_
+
+#include"ini_file.h"
+
+enum dyn_ack_strategy {
+    DACK_DISABLED,
+    DACK_ROOT, // congruence is the root of the conflict
+    DACK_CR    // congruence used during conflict resolution
+};
+
+struct dyn_ack_params {
+    dyn_ack_strategy m_dack;
+    bool             m_dack_eq;
+    double           m_dack_factor;
+    unsigned         m_dack_threshold;
+    unsigned         m_dack_gc;
+    double           m_dack_gc_inv_decay;
+
+public:
+    dyn_ack_params():
+        m_dack(DACK_ROOT),
+        m_dack_eq(false),
+        m_dack_factor(0.1),
+        m_dack_threshold(10),
+        m_dack_gc(2000), 
+        m_dack_gc_inv_decay(0.8) {
+    }
+
+    void register_params(ini_params & p);
+};
+
+
+#endif /* _DYN_ACK_PARAMS_H_ */
+