//////////////////////////////////////////////////////////////////////
//
// Status codes for the doubly linked list implementation
//
#define  DLL_SUCCESS         0x0000000000010000
#define  DLL_MALLOC_FAIL     0x0000000000020000
#define  DLL_ALREADY_ALLOC   0x0000000000040000
#define  DLL_NULL            0x0000000000080000
#define  DLL_ERROR           0x0000000000100000
#define  DLL_EMPTY           0x0000000000200000
#define  DLL_INVALID         0x0000000000400000
#define  DLL_DEFAULT_FAIL    0x0000000000800000

//////////////////////////////////////////////////////////////////////
//
// Options for list display() and support catlist() functions
//
#define  DISPLAY_FORWARD     000
#define  DISPLAY_NOPOSVALS   000
#define  DISPLAY_POSVALS     001
#define  DISPLAY_BACKWARD    002