+#define LL_FMT "i64"
+#define ULL_FMT "ui64"
+
+#else
+typedef long long long64;
+typedef unsigned long long ulong64;
+
+#define LL_FMT "ll"
+#define ULL_FMT "llu"
+
+#endif
+
+/**
+ * Statistics over a copy optimization module.
+ */
+typedef struct {
+ ulong64 aff_edges; /**< number of affinity edges. */
+ ulong64 aff_nodes; /**< number of nodes with incident affinity edges. */
+ ulong64 aff_int; /**< number of affinity edges whose nodes also interfere. */
+ ulong64 inevit_costs; /**< costs which cannot be evited (due to interfering affinities). */
+ ulong64 max_costs; /**< all costs of the affinities. */
+ ulong64 costs; /**< The costs of the current coloring. */
+ ulong64 unsatisfied_edges; /**< The number of unequally colored affinity edges. */
+} co_complete_stats_t;
+
+/**
+ * Collect statistics of a copy optimization module.
+ * @param co The copy optimization environment.
+ * @param stat Where to put the stats.
+ * @note This requires the graph info to be computed.
+ */
+void co_complete_stats(const copy_opt_t *co, co_complete_stats_t *stat);