1 files changed, 19 insertions, 0 deletions
diff --git a/util.h b/util.h
new file mode 100644
index 0000000..1e3cf9a
--- /dev/null
+++ b/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);
+