2.2.2.2 OLD_LARGE_INTEGER

The OLD_LARGE_INTEGER structure defines a 64-bit value that is accessible in two 4-byte chunks.

 typedef struct _OLD_LARGE_INTEGER {
   unsigned long LowPart;
   long HighPart;
 } OLD_LARGE_INTEGER,
  *POLD_LARGE_INTEGER;

LowPart: The least-significant portion of a 64-bit value.

HighPart: The most-significant portion of a 64-bit value.