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169 lines
4.6 KiB
C
169 lines
4.6 KiB
C
/*
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* $PostgreSQL: pgsql/contrib/intarray/_int.h,v 1.17 2009/06/11 14:48:51 momjian Exp $
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*/
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#ifndef ___INT_H__
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#define ___INT_H__
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#include "utils/array.h"
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/* number ranges for compression */
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#define MAXNUMRANGE 100
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/* dimension of array */
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#define NDIM 1
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/* useful macros for accessing int4 arrays */
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#define ARRPTR(x) ( (int4 *) ARR_DATA_PTR(x) )
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#define ARRNELEMS(x) ArrayGetNItems(ARR_NDIM(x), ARR_DIMS(x))
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/* reject arrays we can't handle; but allow a NULL or empty array */
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#define CHECKARRVALID(x) \
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do { \
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if (x) { \
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if (ARR_NDIM(x) != NDIM && ARR_NDIM(x) != 0) \
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ereport(ERROR, \
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(errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR), \
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errmsg("array must be one-dimensional"))); \
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if (ARR_HASNULL(x)) \
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ereport(ERROR, \
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(errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), \
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errmsg("array must not contain nulls"))); \
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} \
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} while(0)
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#define ARRISVOID(x) ((x) == NULL || ARRNELEMS(x) == 0)
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#define SORT(x) \
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do { \
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if ( ARRNELEMS( x ) > 1 ) \
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isort( ARRPTR( x ), ARRNELEMS( x ) ); \
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} while(0)
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#define PREPAREARR(x) \
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do { \
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if ( ARRNELEMS( x ) > 1 ) \
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if ( isort( ARRPTR( x ), ARRNELEMS( x ) ) ) \
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x = _int_unique( x ); \
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} while(0)
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/* "wish" function */
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#define WISH_F(a,b,c) (double)( -(double)(((a)-(b))*((a)-(b))*((a)-(b)))*(c) )
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/* bigint defines */
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#define SIGLENINT 63 /* >122 => key will toast, so very slow!!! */
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#define SIGLEN ( sizeof(int)*SIGLENINT )
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#define SIGLENBIT (SIGLEN*BITS_PER_BYTE)
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typedef char BITVEC[SIGLEN];
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typedef char *BITVECP;
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#define LOOPBYTE \
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for(i=0;i<SIGLEN;i++)
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/* beware of multiple evaluation of arguments to these macros! */
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#define GETBYTE(x,i) ( *( (BITVECP)(x) + (int)( (i) / BITS_PER_BYTE ) ) )
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#define GETBITBYTE(x,i) ( (*((char*)(x)) >> (i)) & 0x01 )
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#define CLRBIT(x,i) GETBYTE(x,i) &= ~( 0x01 << ( (i) % BITS_PER_BYTE ) )
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#define SETBIT(x,i) GETBYTE(x,i) |= ( 0x01 << ( (i) % BITS_PER_BYTE ) )
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#define GETBIT(x,i) ( (GETBYTE(x,i) >> ( (i) % BITS_PER_BYTE )) & 0x01 )
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#define HASHVAL(val) (((unsigned int)(val)) % SIGLENBIT)
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#define HASH(sign, val) SETBIT((sign), HASHVAL(val))
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/*
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* type of index key
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*/
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typedef struct
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{
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int32 vl_len_; /* varlena header (do not touch directly!) */
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int4 flag;
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char data[1];
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} GISTTYPE;
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#define ALLISTRUE 0x04
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#define ISALLTRUE(x) ( ((GISTTYPE*)x)->flag & ALLISTRUE )
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#define GTHDRSIZE (VARHDRSZ + sizeof(int4))
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#define CALCGTSIZE(flag) ( GTHDRSIZE+(((flag) & ALLISTRUE) ? 0 : SIGLEN) )
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#define GETSIGN(x) ( (BITVECP)( (char*)x+GTHDRSIZE ) )
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/*
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** types for functions
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*/
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typedef ArrayType *(*formarray) (ArrayType *, ArrayType *);
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typedef void (*formfloat) (ArrayType *, float *);
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/*
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** useful function
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*/
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bool isort(int4 *a, int len);
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ArrayType *new_intArrayType(int num);
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ArrayType *copy_intArrayType(ArrayType *a);
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ArrayType *resize_intArrayType(ArrayType *a, int num);
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int internal_size(int *a, int len);
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ArrayType *_int_unique(ArrayType *a);
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int32 intarray_match_first(ArrayType *a, int32 elem);
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ArrayType *intarray_add_elem(ArrayType *a, int32 elem);
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ArrayType *intarray_concat_arrays(ArrayType *a, ArrayType *b);
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ArrayType *int_to_intset(int32 elem);
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bool inner_int_overlap(ArrayType *a, ArrayType *b);
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bool inner_int_contains(ArrayType *a, ArrayType *b);
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ArrayType *inner_int_union(ArrayType *a, ArrayType *b);
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ArrayType *inner_int_inter(ArrayType *a, ArrayType *b);
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void rt__int_size(ArrayType *a, float *size);
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void gensign(BITVEC sign, int *a, int len);
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/*****************************************************************************
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* Boolean Search
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*****************************************************************************/
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#define BooleanSearchStrategy 20
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/*
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* item in polish notation with back link
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* to left operand
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*/
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typedef struct ITEM
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{
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int2 type;
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int2 left;
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int4 val;
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} ITEM;
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typedef struct
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{
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int32 vl_len_; /* varlena header (do not touch directly!) */
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int4 size;
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char data[1];
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} QUERYTYPE;
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#define HDRSIZEQT (VARHDRSZ + sizeof(int4))
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#define COMPUTESIZE(size) ( HDRSIZEQT + size * sizeof(ITEM) )
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#define GETQUERY(x) (ITEM*)( (char*)(x)+HDRSIZEQT )
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#define END 0
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#define ERR 1
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#define VAL 2
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#define OPR 3
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#define OPEN 4
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#define CLOSE 5
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bool signconsistent(QUERYTYPE *query, BITVEC sign, bool calcnot);
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bool execconsistent(QUERYTYPE *query, ArrayType *array, bool calcnot);
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bool ginconsistent(QUERYTYPE *query, bool *check);
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int4 shorterquery(ITEM *q, int4 len);
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int compASC(const void *a, const void *b);
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int compDESC(const void *a, const void *b);
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#define QSORT(a, direction) \
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if (ARRNELEMS(a) > 1) \
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qsort((void*)ARRPTR(a), ARRNELEMS(a),sizeof(int4), \
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(direction) ? compASC : compDESC )
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#endif /* ___INT_H__ */
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