From 5e45211a64149b3c659b90ff2de6fa982a5a93ed Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 4 May 2024 14:17:33 +0200 Subject: Adding upstream version 15.5. Signed-off-by: Daniel Baumann --- contrib/cube/cubedata.h | 69 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 contrib/cube/cubedata.h (limited to 'contrib/cube/cubedata.h') diff --git a/contrib/cube/cubedata.h b/contrib/cube/cubedata.h new file mode 100644 index 0000000..dbe7d4f --- /dev/null +++ b/contrib/cube/cubedata.h @@ -0,0 +1,69 @@ +/* contrib/cube/cubedata.h */ + +/* + * This limit is pretty arbitrary, but don't make it so large that you + * risk overflow in sizing calculations. + */ +#define CUBE_MAX_DIM (100) + +typedef struct NDBOX +{ + /* varlena header (do not touch directly!) */ + int32 vl_len_; + + /*---------- + * Header contains info about NDBOX. For binary compatibility with old + * versions, it is defined as "unsigned int". + * + * Following information is stored: + * + * bits 0-7 : number of cube dimensions; + * bits 8-30 : unused, initialize to zero; + * bit 31 : point flag. If set, the upper right coordinates are not + * stored, and are implicitly the same as the lower left + * coordinates. + *---------- + */ + unsigned int header; + + /* + * The lower left coordinates for each dimension come first, followed by + * upper right coordinates unless the point flag is set. + */ + double x[FLEXIBLE_ARRAY_MEMBER]; +} NDBOX; + +/* NDBOX access macros */ +#define POINT_BIT 0x80000000 +#define DIM_MASK 0x7fffffff + +#define IS_POINT(cube) ( ((cube)->header & POINT_BIT) != 0 ) +#define SET_POINT_BIT(cube) ( (cube)->header |= POINT_BIT ) +#define DIM(cube) ( (cube)->header & DIM_MASK ) +#define SET_DIM(cube, _dim) ( (cube)->header = ((cube)->header & ~DIM_MASK) | (_dim) ) + +#define LL_COORD(cube, i) ( (cube)->x[i] ) +#define UR_COORD(cube, i) ( IS_POINT(cube) ? (cube)->x[i] : (cube)->x[(i) + DIM(cube)] ) + +#define POINT_SIZE(_dim) (offsetof(NDBOX, x) + sizeof(double)*(_dim)) +#define CUBE_SIZE(_dim) (offsetof(NDBOX, x) + sizeof(double)*(_dim)*2) + +/* fmgr interface macros */ +#define DatumGetNDBOXP(x) ((NDBOX *) PG_DETOAST_DATUM(x)) +#define PG_GETARG_NDBOX_P(x) DatumGetNDBOXP(PG_GETARG_DATUM(x)) +#define PG_RETURN_NDBOX_P(x) PG_RETURN_POINTER(x) + +/* GiST operator strategy numbers */ +#define CubeKNNDistanceCoord 15 /* ~> */ +#define CubeKNNDistanceTaxicab 16 /* <#> */ +#define CubeKNNDistanceEuclid 17 /* <-> */ +#define CubeKNNDistanceChebyshev 18 /* <=> */ + +/* in cubescan.l */ +extern int cube_yylex(void); +extern void cube_yyerror(NDBOX **result, const char *message) pg_attribute_noreturn(); +extern void cube_scanner_init(const char *str); +extern void cube_scanner_finish(void); + +/* in cubeparse.y */ +extern int cube_yyparse(NDBOX **result); -- cgit v1.2.3