--- /dev/null
+//
+// fileio.cpp: File I/O functions
+//
+// by James Hammons
+// (C) 2023 Underground Software
+//
+#ifndef __FILEIO_H__
+#define __FILEIO_H__
+
+#include <stdio.h>
+#include <cstdint>
+
+uint32_t ReadLong(FILE *);
+void WriteLong(FILE *, uint32_t);
+
+#endif // __FILEIO_H__