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--- a
+++ b/src/utils/listmem.h
@@ -0,0 +1,11 @@
+#ifndef _LISTMEM_H_INCLUDED_
+#define _LISTMEM_H_INCLUDED_
+#include <ostream>
+
+enum ListmemOpts {LISTMEM_SWAP16 = 1, LISTMEM_SWAP32 = 2};
+
+/// @param startadr starting value for offset listings on the right
+extern void listmem(std::ostream&, const void *ptr, int sz,
+                    int startadr = 0, int opts = 0);
+
+#endif /* _LISTMEM_H_INCLUDED_ */