--- BDB/schmorp.h	2010/10/23 09:40:53	1.8
+++ BDB/schmorp.h	2012/10/11 05:02:54	1.9
@@ -3,6 +3,7 @@
 
 /* WARNING
  * This header file is a shared resource between many modules.
+ * perl header files MUST already be included.
  */
 
 #include <signal.h>
@@ -51,6 +52,32 @@
 # endif
 #endif
 
+/* use NV for 32 bit perls as it allows larger offsets */
+#if IVSIZE >= 8
+typedef IV VAL64;
+# define SvVAL64(sv) SvIV (sv)
+# define newSVval64(i64) newSViv (i64)
+#else
+typedef NV VAL64;
+# define SvVAL64(sv) SvNV (sv)
+# define newSVval64(i64) newSVnv (i64)
+#endif
+
+/* typemap for the above */
+/*
+VAL64		T_VAL64
+
+INPUT
+
+T_VAL64
+	$var = ($type)SvVAL64 ($arg);
+
+OUTPUT
+
+T_VAL64
+	$arg = newSVval64 ($var);
+*/
+
 /* 5.11 */
 #ifndef CxHASARGS
 # define CxHASARGS(cx) (cx)->blk_sub.hasargs