usr: sdk: Add initial string lib sources + strlen

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/usr/sdk/inc/sdk/string.h b/usr/sdk/inc/sdk/string.h
new file mode 100644
index 0000000..f7668fd
--- /dev/null
+++ b/usr/sdk/inc/sdk/string.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2025, Ian Moffett.
+ * Provided under the BSD-3 clause.
+ */
+
+#ifndef _SDK_STRING_H_
+#define _SDK_STRING_H_ 1
+
+ #include <sdk/types.h>
+
+/*
+ * Returns the length of a string
+ *
+ * @str: String to get length of
+ */
+USIZE strlen(const char *str);
+
+#endif  /* !_SDK_STRING_H_ */