init, 2015 & 2016

2015/include/advent_utility.h

@@ -0,0 +1,27 @@
+#ifndef ADVENT_H_UTILITY_
+#define ADVENT_H_UTILITY_
+
+#include "lfvector.h"
+
+#define DEFAULT_DELIM " \t\n\r\f\v"
+
+#define MAX(x, y) (x) > (y) ? (x) : (y)
+#define MIN(x, y) (x) < (y) ? (x) : (y)
+
+char *md5_str(const char *);
+Vector *string_to_int_vector(const char *input_string, const char *delim);
+int int_comp(const void *a, const void *b);
+char **get_matches(char *in, char *pat, size_t *sz, size_t max_matches);
+void free_matches(char **matches, size_t sz);
+
+enum Direction {
+    DIR_NORTH = 0,
+    DIR_EAST = 1,
+    DIR_SOUTH = 2,
+    DIR_WEST = 3,
+};
+
+void turn_right(enum Direction *d);
+void turn_left(enum Direction *d);
+
+#endif