1 files changed, 25 insertions, 0 deletions
diff --git a/lib/sizeof.h b/lib/sizeof.h
new file mode 100644
index 0000000..6847068
--- /dev/null
+++ b/lib/sizeof.h
@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIBMISC_SIZEOF_H_
+#define SHADOW_INCLUDE_LIBMISC_SIZEOF_H_
+
+
+#include <config.h>
+
+#include <limits.h>
+
+#include "must_be.h"
+
+
+#define memberof(T, member)  ((T){}.member)
+#define WIDTHOF(x)           (sizeof(x) * CHAR_BIT)
+#define SIZEOF_ARRAY(a)      (sizeof(a) + must_be_array(a))
+#define NITEMS(a)            (SIZEOF_ARRAY((a)) / sizeof((a)[0]))
+#define STRLEN(s)            (NITEMS(s) - 1)
+
+
+#endif  // include guard