// Status codes for the doubly linked list implementation
//
#define  DLL_SUCCESS         0x0000000000000100
#define  DLL_MALLOC_FAIL     0x0000000000000200
#define  DLL_ALREADY_ALLOC   0x0000000000000400
#define  DLL_NULL            0x0000000000000800
#define  DLL_ERROR           0x0000000000001000
#define  DLL_DEFAULT_FAIL    0x0000000000002000
#define  DLL_EMPTY           0x0000000000004000
#define  DLL_INVALID         0x0000000000008000