1 files changed, 27 insertions, 0 deletions
diff --git a/src/macros.h b/src/macros.h
new file mode 100644
index 0000000..6910ae7
--- /dev/null
+++ b/src/macros.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2024 Richard Braun.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted.
+ *
+ * THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE
+ * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+ * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ *
+ * Macros.
+ */
+
+#ifndef MACROS_H
+#define MACROS_H
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+#define structof(ptr, type, member) \
+    ((type *)((char *)(ptr) - offsetof(type, member)))
+
+#endif /* MACROS_H */