split into parts, add stats

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

src/math/polysat/constraint.cpp

@@ -0,0 +1,30 @@
+/*++
+Copyright (c) 2021 Microsoft Corporation
+
+Module Name:
+
+    polysat constraints
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2021-03-19
+
+--*/
+
+#include "math/polysat/constraint.h"
+
+namespace polysat {
+
+    std::ostream& constraint::display(std::ostream& out) const {
+        switch (kind()) {
+        case ckind_t::eq_t:
+            return out << p() << " == 0";
+        case ckind_t::ule_t:
+            return out << lhs() << " <=u " << rhs();
+        case ckind_t::sle_t:
+            return out << lhs() << " <=s " << rhs();
+        }
+        return out;
+    }
+
+}