#ifndef __defs_h__
#define __defs_h__

typedef int boolean;
enum {false = 0, true = 1};

#define NULL ((void *)0)
#define SIZEOF_ARRAY(a) ((const unsigned int)(sizeof(a)/sizeof(a[0])))

#define circInc(x, lo, hi) (((x) == (hi)) ? (x) = (lo) : (x)++ )
#define circDec(x, lo, hi) (((x) == (lo)) ? (x) = (hi) : (x)-- )

#endif /* __defs_h__ */