1 /* $PostgreSQL: pgsql/contrib/tsearch2/gistidx.h,v 1.7 2006/03/11 04:38:30 momjian Exp $ */
14 #define SIGLENINT 63 /* >121 => key will toast, so it will not work
16 #define SIGLEN ( sizeof(int4) * SIGLENINT )
17 #define SIGLENBIT (SIGLEN * BITS_PER_BYTE)
19 typedef char BITVEC[SIGLEN];
20 typedef char *BITVECP;
23 for(i=0;i<SIGLEN;i++) {\
27 #define GETBYTE(x,i) ( *( (BITVECP)(x) + (int)( (i) / BITS_PER_BYTE ) ) )
28 #define GETBITBYTE(x,i) ( ((char)(x)) >> (i) & 0x01 )
29 #define CLRBIT(x,i) GETBYTE(x,i) &= ~( 0x01 << ( (i) % BITS_PER_BYTE ) )
30 #define SETBIT(x,i) GETBYTE(x,i) |= ( 0x01 << ( (i) % BITS_PER_BYTE ) )
31 #define GETBIT(x,i) ( (GETBYTE(x,i) >> ( (i) % BITS_PER_BYTE )) & 0x01 )
33 #define HASHVAL(val) (((unsigned int)(val)) % SIGLENBIT)
34 #define HASH(sign, val) SETBIT((sign), HASHVAL(val))
49 #define ALLISTRUE 0x04
51 #define ISARRKEY(x) ( ((GISTTYPE*)(x))->flag & ARRKEY )
52 #define ISSIGNKEY(x) ( ((GISTTYPE*)(x))->flag & SIGNKEY )
53 #define ISALLTRUE(x) ( ((GISTTYPE*)(x))->flag & ALLISTRUE )
55 #define GTHDRSIZE ( sizeof(int4) * 2 )
56 #define CALCGTSIZE(flag, len) ( GTHDRSIZE + ( ( (flag) & ARRKEY ) ? ((len)*sizeof(int4)) : (((flag) & ALLISTRUE) ? 0 : SIGLEN) ) )
58 #define GETSIGN(x) ( (BITVECP)( (char*)(x)+GTHDRSIZE ) )
59 #define GETARR(x) ( (int4*)( (char*)(x)+GTHDRSIZE ) )
60 #define ARRNELEM(x) ( ( ((GISTTYPE*)(x))->len - GTHDRSIZE )/sizeof(int4) )