?? macros.h
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/* macros.h|||| This header file contains generic constant and macro definitions for|| the r-tree library.*/#ifndef NULL#define NULL 0#endif#define EOS '\0'#define True 1#define TRUE 1#define False 0#define FALSE 0#define UNKNOWN 0#define And &&#define Or ||#define Not !#define elif else if#define loop for(;;)#define PI 3.141592654#define DEGTORAD ((2*PI)/360)#define RADTODEG (360/(2*PI))#define INTOCM 2.54#define CMTOIN 0.39370079#define MAXINT 1000000#define MININT 0/* #define MAXINT 0x7fffffff *//* 2147483647 *//* #define MININT 0x80000000 *//* -2147483648 *//* Comparison Macros */#define max(a,b) ((a) > (b) ? (a) : (b))#define min(a,b) ((a) < (b) ? (a) : (b))#define abs(a) ((a) >= 0 ? (a) : (-(a)))#define SwapInts(a,b) {int rt_c; rt_c = a; a = b; b = rt_c;}
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