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-rw-r--r--lib/libc/strlen.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/libc/strlen.c b/lib/libc/strlen.c
new file mode 100644
index 0000000..e4b79d9
--- /dev/null
+++ b/lib/libc/strlen.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2018, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <string.h>
+
+size_t strlen(const char *s)
+{
+ const char *cursor = s;
+
+ while (*cursor)
+ cursor++;
+
+ return cursor - s;
+}