1 files changed, 19 insertions, 0 deletions
diff --git a/include/common.h b/include/common.h
new file mode 100644
index 0000000..c61ac4d
--- /dev/null
+++ b/include/common.h
@@ -0,0 +1,19 @@
+#ifndef _COMMON_H
+#define _COMMON_H
+
+#include "structs.h"
+
+#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
+#define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
+
+struct data * input(char[]);
+void print_data(struct data *);
+void print_front(struct front_item *);
+void free_data(struct data *);
+void free_front(struct front_item *);
+struct front_item * new_front_item(double,  double, struct front_item *, struct front_item *);
+double dist_items(struct item *, struct item *);
+int len_front(struct front_item *);
+int cmp_items_ratio(const void * a, const void * b);
+
+#endif