9 #include "access/gist.h"
10 #include "access/itup.h"
11 #include "utils/builtins.h"
12 #include "storage/bufpage.h"
24 #define CMPCHAR(a,b) ( ((a)==(b)) ? 0 : ( ((a)<(b)) ? -1 : 1 ) )
25 #define CMPPCHAR(a,b,i) CMPCHAR( *(((char*)(a))+i), *(((char*)(b))+i) )
26 #define CMPTRGM(a,b) ( CMPPCHAR(a,b,0) ? CMPPCHAR(a,b,0) : ( CMPPCHAR(a,b,1) ? CMPPCHAR(a,b,1) : CMPPCHAR(a,b,2) ) )
28 #define CPTRGM(a,b) do { \
29 *(((char*)(a))+0) = *(((char*)(b))+0); \
30 *(((char*)(a))+1) = *(((char*)(b))+1); \
31 *(((char*)(a))+2) = *(((char*)(b))+2); \
34 #define TRGMINT(a) ( (*(((char*)(a))+2)<<16)+(*(((char*)(a))+1)<<8)+*(((char*)(a))+0) )
38 int32 vl_len_
; /* varlena header (do not touch directly!) */
43 #define TRGMHDRSIZE (VARHDRSZ + sizeof(uint8))
47 #define SIGLENINT 3 /* >122 => key will toast, so very slow!!! */
48 #define SIGLEN ( sizeof(int)*SIGLENINT )
50 #define SIGLENBIT (SIGLEN*BITBYTE - 1) /* see makesign */
52 typedef char BITVEC
[SIGLEN
];
53 typedef char *BITVECP
;
58 #define GETBYTE(x,i) ( *( (BITVECP)(x) + (int)( (i) / BITBYTE ) ) )
59 #define GETBITBYTE(x,i) ( ((char)(x)) >> i & 0x01 )
60 #define CLRBIT(x,i) GETBYTE(x,i) &= ~( 0x01 << ( (i) % BITBYTE ) )
61 #define SETBIT(x,i) GETBYTE(x,i) |= ( 0x01 << ( (i) % BITBYTE ) )
62 #define GETBIT(x,i) ( (GETBYTE(x,i) >> ( (i) % BITBYTE )) & 0x01 )
64 #define HASHVAL(val) (((unsigned int)(val)) % SIGLENBIT)
65 #define HASH(sign, val) SETBIT((sign), HASHVAL(val))
69 #define ALLISTRUE 0x04
71 #define ISARRKEY(x) ( ((TRGM*)x)->flag & ARRKEY )
72 #define ISSIGNKEY(x) ( ((TRGM*)x)->flag & SIGNKEY )
73 #define ISALLTRUE(x) ( ((TRGM*)x)->flag & ALLISTRUE )
75 #define CALCGTSIZE(flag, len) ( TRGMHDRSIZE + ( ( (flag) & ARRKEY ) ? ((len)*sizeof(trgm)) : (((flag) & ALLISTRUE) ? 0 : SIGLEN) ) )
76 #define GETSIGN(x) ( (BITVECP)( (char*)x+TRGMHDRSIZE ) )
77 #define GETARR(x) ( (trgm*)( (char*)x+TRGMHDRSIZE ) )
78 #define ARRNELEM(x) ( ( VARSIZE(x) - TRGMHDRSIZE )/sizeof(trgm) )
80 extern float4 trgm_limit
;
82 TRGM
*generate_trgm(char *str
, int slen
);
83 float4
cnt_sml(TRGM
* trg1
, TRGM
* trg2
);