initial commit

util.h

@@ -0,0 +1,19 @@
+/* See LICENSE file for copyright and license details. */
+
+#ifndef MAX
+#define MAX(A, B)               ((A) > (B) ? (A) : (B))
+#endif
+#ifndef MIN
+#define MIN(A, B)               ((A) < (B) ? (A) : (B))
+#endif
+#define BETWEEN(X, A, B)        ((A) <= (X) && (X) <= (B))
+
+#ifdef _DEBUG
+#define DEBUG(...) fprintf(stderr, __VA_ARGS__)
+#else
+#define DEBUG(...)
+#endif
+
+void die(const char *fmt, ...);
+void *ecalloc(size_t nmemb, size_t size);
+