codekingpro/portable-devtools

1/* contrib/cube/cubedata.h */2 3/*4 * This limit is pretty arbitrary, but don't make it so large that you5 * risk overflow in sizing calculations.6 */7#define CUBE_MAX_DIM (100)8 9typedef struct NDBOX10{11	/* varlena header (do not touch directly!) */12	int32		vl_len_;13 14	/*----------15	 * Header contains info about NDBOX. For binary compatibility with old16	 * versions, it is defined as "unsigned int".17	 *18	 * Following information is stored:19	 *20	 *	bits 0-7  : number of cube dimensions;21	 *	bits 8-30 : unused, initialize to zero;22	 *	bit  31   : point flag. If set, the upper right coordinates are not23	 *				stored, and are implicitly the same as the lower left24	 *				coordinates.25	 *----------26	 */27	unsigned int header;28 29	/*30	 * The lower left coordinates for each dimension come first, followed by31	 * upper right coordinates unless the point flag is set.32	 */33	double		x[FLEXIBLE_ARRAY_MEMBER];34} NDBOX;35 36/* NDBOX access macros */37#define POINT_BIT			0x8000000038#define DIM_MASK			0x7fffffff39 40#define IS_POINT(cube)		( ((cube)->header & POINT_BIT) != 0 )41#define SET_POINT_BIT(cube) ( (cube)->header |= POINT_BIT )42#define DIM(cube)			( (cube)->header & DIM_MASK )43#define SET_DIM(cube, _dim) ( (cube)->header = ((cube)->header & ~DIM_MASK) | (_dim) )44 45#define LL_COORD(cube, i) ( (cube)->x[i] )46#define UR_COORD(cube, i) ( IS_POINT(cube) ? (cube)->x[i] : (cube)->x[(i) + DIM(cube)] )47 48#define POINT_SIZE(_dim)	(offsetof(NDBOX, x) + sizeof(double)*(_dim))49#define CUBE_SIZE(_dim)		(offsetof(NDBOX, x) + sizeof(double)*(_dim)*2)50 51/* fmgr interface macros */52#define DatumGetNDBOXP(x)	((NDBOX *) PG_DETOAST_DATUM(x))53#define PG_GETARG_NDBOX_P(x)	DatumGetNDBOXP(PG_GETARG_DATUM(x))54#define PG_RETURN_NDBOX_P(x)	PG_RETURN_POINTER(x)55 56/* GiST operator strategy numbers */57#define CubeKNNDistanceCoord			15	/* ~> */58#define CubeKNNDistanceTaxicab			16	/* <#> */59#define CubeKNNDistanceEuclid			17	/* <-> */60#define CubeKNNDistanceChebyshev		18	/* <=> */61 62/* in cubescan.l */63extern int	cube_yylex(void);64extern void cube_yyerror(NDBOX **result, Size scanbuflen,65						 struct Node *escontext,66						 const char *message);67extern void cube_scanner_init(const char *str, Size *scanbuflen);68extern void cube_scanner_finish(void);69 70/* in cubeparse.y */71extern int	cube_yyparse(NDBOX **result, Size scanbuflen,72						 struct Node *escontext);73