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#ifndef _TW_DATATYPES_H
#define _TW_DATATYPES_H
typedef signed char num;
typedef unsigned char byte;
typedef signed short dat;
typedef unsigned short udat;
typedef signed int ldat;
typedef unsigned int uldat;
typedef unsigned char hwcol;
typedef signed int frac_t;
/* the biggest data type used byt libTw. usually will be same as uldat or time_t */
typedef unsigned long tlargest;
#define MAXU(t) ((t)~(t)0)
#define MINS(t) ((t)((t)1<<(8*sizeof(t)-1)))
#define MAXS(t) ((t)~MINS(t))
#define MINNUM MINS(num)
#define MAXNUM MAXS(num)
#define MAXBYTE MAXU(byte)
#define MINDAT MINS(dat)
#define MAXDAT MAXS(dat)
#define MAXUDAT MAXU(udat)
#define MINLDAT MINS(ldat)
#define MAXLDAT MAXS(ldat)
#define MAXULDAT MAXU(uldat)
/* this is tricky... we don't know signedness nor sizeof(time_t) during preprocess */
#define MAXTIME_T ( (time_t)-1 > (time_t)0 ? MAXU(time_t) : MAXS(time_t) )
#define MINTIME_T ( (time_t)-1 > (time_t)0 ? (time_t)0 : MINS(time_t) )
#define MAXFRAC_T MAXS(frac_t)
#define MINFRAC_T MINS(frac_t)
#define MAXTLARGEST MAXU(tlargest)
#define TW_DECL_MAGIC(id) \
static byte id[10+sizeof(uldat)] = { \
10+sizeof(uldat), \
sizeof(byte), \
sizeof(udat), \
sizeof(uldat), \
sizeof(hwcol), \
sizeof(time_t), \
sizeof(frac_t), \
sizeof(hwfont), \
sizeof(hwattr), \
0 \
}
#endif /* _TW_DATATYPES_H */
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