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-rw-r--r--include/ulib/ctypes.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/ulib/ctypes.h b/include/ulib/ctypes.h
index 3e0bc22..1ec204e 100644
--- a/include/ulib/ctypes.h
+++ b/include/ulib/ctypes.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
#ifndef _CTYPE_H
#define _CTYPE_H