Bixi library also provides a few useful definitions to help in everyday use:
#define UNUSED(x) /* For hide compiler messages about not-used variables */
#define NULL
#define BXI_IN( value, high, low)
#define BXI_IN_INC(value, high, low)
#define forever
#define BXI_ARRAY_SIZE(static_arr)
#define BXI_KB(b)
#define BXI_MB(b)
#define BXI_GB(b)