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Hi,

Browse Source 
here is an updated version of the bit type with a bugfix and all the necessa
ry
SQL functions defined. This should replace what is currently in contrib. I'd
appreciate any comments on what is there.

Kind regards,

Adriaan
This commit is contained in:
Bruce Momjian
2000-04-03 20:56:40 +00:00
parent 5454b37921
commit 51cfdae50f
10 changed files with 423 additions and 132 deletions
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52
contrib/bit/varbit.h
View File

@ -1,17 +1,21 @@
#include "c.h"
#include "postgres.h"
typedef bits8 *VarBit;
typedef uint32 BitIndex;
#define HEXDIG(z) (z)<10 ? ((z)+'0') : ((z)-10+'A')
/* Modeled on struct varlena from postgres.h, bu data type is bits8 */
struct varbita
{
int32 vl_len;
bits8 vl_dat[1];
};
#define BITSPERBYTE 8
#define VARBITHDRSZ sizeof(int32)
/* Number of bits in this bit string */
#define VARBITLEN(PTR) (((struct varlena *)VARDATA(PTR))->vl_len)
#define VARBITLEN(PTR) (((struct varbita *)VARDATA(PTR))->vl_len)
/* Pointer tp the first byte containing bit string data */
#define VARBITS(PTR) (((struct varlena *)VARDATA(PTR))->vl_dat)
#define VARBITS(PTR) (((struct varbita *)VARDATA(PTR))->vl_dat)
/* Number of bytes in the data section of a bit string */
#define VARBITBYTES(PTR) (VARSIZE(PTR) - VARHDRSZ - VARBITHDRSZ)
/* Padding of the bit string at the end */
@ -27,22 +31,22 @@ typedef uint32 BitIndex;
#define BITHIGH 0x80
char * zpbitin(char *s, int dummy, int32 atttypmod);
char * zpbitout(char *s);
char * zpbitsout(char *s);
char * varbitin(char *s, int dummy, int32 atttypmod);
bool biteq (char *arg1, char *arg2);
bool bitne (char *arg1, char *arg2);
bool bitge (char *arg1, char *arg2);
bool bitgt (char *arg1, char *arg2);
bool bitle (char *arg1, char *arg2);
bool bitlt (char *arg1, char *arg2);
int bitcmp (char *arg1, char *arg2);
char * bitand (char * arg1, char * arg2);
char * bitor (char * arg1, char * arg2);
char * bitxor (char * arg1, char * arg2);
char * bitnot (char * arg);
char * bitshiftright (char * arg, int shft);
char * bitshiftleft (char * arg, int shft);
char * bitcat (char *arg1, char *arg2);
char * bitsubstr (char *arg, int32 s, int32 l);
bits8 * zpbitin(char *s, int dummy, int32 atttypmod);
char * zpbitout(bits8 *s);
char * zpbitsout(bits8 *s);
bits8 * varbitin(char *s, int dummy, int32 atttypmod);
bool biteq (bits8 *arg1, bits8 *arg2);
bool bitne (bits8 *arg1, bits8 *arg2);
bool bitge (bits8 *arg1, bits8 *arg2);
bool bitgt (bits8 *arg1, bits8 *arg2);
bool bitle (bits8 *arg1, bits8 *arg2);
bool bitlt (bits8 *arg1, bits8 *arg2);
int bitcmp (bits8 *arg1, bits8 *arg2);
bits8 * bitand (bits8 * arg1, bits8 * arg2);
bits8 * bitor (bits8 * arg1, bits8 * arg2);
bits8 * bitxor (bits8 * arg1, bits8 * arg2);
bits8 * bitnot (bits8 * arg);
bits8 * bitshiftright (bits8 * arg, int shft);
bits8 * bitshiftleft (bits8 * arg, int shft);
bits8 * bitcat (bits8 *arg1, bits8 *arg2);
bits8 * bitsubstr (bits8 *arg, int32 s, int32 l);