postgresql/contrib/intarray/_int.h
2003-08-04 00:43:34 +00:00

176 lines
4.6 KiB
C

#include "postgres.h"
#include <float.h>
#include "access/gist.h"
#include "access/itup.h"
#include "access/rtree.h"
#include "catalog/pg_type.h"
#include "utils/array.h"
#include "utils/builtins.h"
#include "storage/bufpage.h"
#include "lib/stringinfo.h"
/* number ranges for compression */
#define MAXNUMRANGE 100
#define max(a,b) ((a) > (b) ? (a) : (b))
#define min(a,b) ((a) <= (b) ? (a) : (b))
#define abs(a) ((a) < (0) ? -(a) : (a))
/* dimension of array */
#define NDIM 1
/*
* flags for gist__int_ops, use ArrayType->flags
* which is unused (see array.h)
*/
#define LEAFKEY (1<<31)
#define ISLEAFKEY(x) ( ((ArrayType*)(x))->flags & LEAFKEY )
/* useful macros for accessing int4 arrays */
#define ARRPTR(x) ( (int4 *) ARR_DATA_PTR(x) )
#define ARRNELEMS(x) ArrayGetNItems( ARR_NDIM(x), ARR_DIMS(x))
#define ARRISVOID(x) ( (x) ? ( ( ARR_NDIM(x) == NDIM ) ? ( ( ARRNELEMS( x ) ) ? 0 : 1 ) : ( ( ARR_NDIM(x) ) ? ( \
ereport(ERROR, \
(errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR), \
errmsg("array must be one-dimensional, not %d dimensions", ARRNELEMS( x )))) \
,1) : 0 ) ) : 0 )
#define SORT(x) \
do { \
if ( ARRNELEMS( x ) > 1 ) \
isort( ARRPTR( x ), ARRNELEMS( x ) ); \
} while(0)
#define PREPAREARR(x) \
do { \
if ( ARRNELEMS( x ) > 1 ) \
if ( isort( ARRPTR( x ), ARRNELEMS( x ) ) ) \
x = _int_unique( x ); \
} while(0)
/* "wish" function */
#define WISH_F(a,b,c) (double)( -(double)(((a)-(b))*((a)-(b))*((a)-(b)))*(c) )
/* bigint defines */
#define BITBYTE 8
#define SIGLENINT 63 /* >122 => key will toast, so very slow!!! */
#define SIGLEN ( sizeof(int)*SIGLENINT )
#define SIGLENBIT (SIGLEN*BITBYTE)
typedef char BITVEC[SIGLEN];
typedef char *BITVECP;
#define SIGPTR(x) ( (BITVECP) ARR_DATA_PTR(x) )
#define LOOPBYTE(a) \
for(i=0;i<SIGLEN;i++) {\
a;\
}
#define LOOPBIT(a) \
for(i=0;i<SIGLENBIT;i++) {\
a;\
}
/* beware of multiple evaluation of arguments to these macros! */
#define GETBYTE(x,i) ( *( (BITVECP)(x) + (int)( (i) / BITBYTE ) ) )
#define GETBITBYTE(x,i) ( (*((char*)(x)) >> (i)) & 0x01 )
#define CLRBIT(x,i) GETBYTE(x,i) &= ~( 0x01 << ( (i) % BITBYTE ) )
#define SETBIT(x,i) GETBYTE(x,i) |= ( 0x01 << ( (i) % BITBYTE ) )
#define GETBIT(x,i) ( (GETBYTE(x,i) >> ( (i) % BITBYTE )) & 0x01 )
#define HASHVAL(val) (((unsigned int)(val)) % SIGLENBIT)
#define HASH(sign, val) SETBIT((sign), HASHVAL(val))
/*
* type of index key
*/
typedef struct
{
int4 len;
int4 flag;
char data[1];
} GISTTYPE;
#define ALLISTRUE 0x04
#define ISALLTRUE(x) ( ((GISTTYPE*)x)->flag & ALLISTRUE )
#define GTHDRSIZE ( sizeof(int4)*2 )
#define CALCGTSIZE(flag) ( GTHDRSIZE+(((flag) & ALLISTRUE) ? 0 : SIGLEN) )
#define GETSIGN(x) ( (BITVECP)( (char*)x+GTHDRSIZE ) )
/*
** types for functions
*/
typedef ArrayType *(*formarray) (ArrayType *, ArrayType *);
typedef void (*formfloat) (ArrayType *, float *);
/*
** useful function
*/
bool isort(int4 *a, const int len);
ArrayType *new_intArrayType(int num);
ArrayType *copy_intArrayType(ArrayType *a);
ArrayType *resize_intArrayType(ArrayType *a, int num);
int internal_size(int *a, int len);
ArrayType *_int_unique(ArrayType *a);
int32 intarray_match_first(ArrayType *a, int32 elem);
ArrayType *intarray_add_elem(ArrayType *a, int32 elem);
ArrayType *intarray_concat_arrays(ArrayType *a, ArrayType *b);
ArrayType *int_to_intset(int32 elem);
bool inner_int_overlap(ArrayType *a, ArrayType *b);
bool inner_int_contains(ArrayType *a, ArrayType *b);
ArrayType *inner_int_union(ArrayType *a, ArrayType *b);
ArrayType *inner_int_inter(ArrayType *a, ArrayType *b);
void rt__int_size(ArrayType *a, float *size);
void gensign(BITVEC sign, int *a, int len);
/*****************************************************************************
* Boolean Search
*****************************************************************************/
#define BooleanSearchStrategy 20
/*
* item in polish notation with back link
* to left operand
*/
typedef struct ITEM
{
int2 type;
int2 left;
int4 val;
} ITEM;
typedef struct
{
int4 len;
int4 size;
char data[1];
} QUERYTYPE;
#define HDRSIZEQT ( 2*sizeof(int4) )
#define COMPUTESIZE(size) ( HDRSIZEQT + size * sizeof(ITEM) )
#define GETQUERY(x) (ITEM*)( (char*)(x)+HDRSIZEQT )
bool signconsistent(QUERYTYPE * query, BITVEC sign, bool calcnot);
bool execconsistent(QUERYTYPE * query, ArrayType *array, bool calcnot);
int compASC(const void *a, const void *b);
int compDESC(const void *a, const void *b);
#define QSORT(a, direction) \
if (ARRNELEMS(a) > 1) \
qsort((void*)ARRPTR(a), ARRNELEMS(a),sizeof(int4), \
(direction) ? compASC : compDESC )