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Diffstat (limited to 'src/backend/access/tupmacs.h')
-rw-r--r-- | src/backend/access/tupmacs.h | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/src/backend/access/tupmacs.h b/src/backend/access/tupmacs.h deleted file mode 100644 index 168a4669c3b..00000000000 --- a/src/backend/access/tupmacs.h +++ /dev/null @@ -1,55 +0,0 @@ -/*------------------------------------------------------------------------- - * - * tupmacs.h-- - * Tuple macros used by both index tuples and heap tuples. - * - * - * Copyright (c) 1994, Regents of the University of California - * - * $Id: tupmacs.h,v 1.2 1996/08/21 04:25:37 scrappy Exp $ - * - *------------------------------------------------------------------------- - */ -#ifndef TUPMACS_H -#define TUPMACS_H - -/* - * check to see if the ATT'th bit of an array of 8-bit bytes is set. - */ -#define att_isnull(ATT, BITS) (!((BITS)[(ATT) >> 3] & (1 << ((ATT) & 0x07)))) - -/* - * given a AttributeTupleForm and a pointer into a tuple's data - * area, return the correct value or pointer. - * - * We return a 4 byte (char *) value in all cases. If the attribute has - * "byval" false or has variable length, we return the same pointer - * into the tuple data area that we're passed. Otherwise, we return - * the 1, 2, or 4 bytes pointed to by it, properly extended to 4 - * bytes, depending on the length of the attribute. - * - * note that T must already be properly LONGALIGN/SHORTALIGN'd for - * this to work correctly. - * - * the double-cast is to stop gcc from (correctly) complaining about - * casting integer types with size < sizeof(char *) to (char *). - * sign-extension may get weird if you use an integer type that - * isn't the same size as (char *) for the first cast. (on the other - * hand, it's safe to use another type for the (foo *)(T).) - * - * attbyval seems to be fairly redundant. We have to return a pointer if - * the value is longer than 4 bytes or has variable length; returning the - * value would be useless. In fact, for at least the variable length case, - * the caller assumes we return a pointer regardless of attbyval. - * I would eliminate attbyval altogether, but I don't know how. -BRYANH. - */ -#define fetchatt(A, T) \ - ((*(A))->attbyval && (*(A))->attlen != -1 \ - ? ((*(A))->attlen > sizeof(int16) \ - ? (char *) (long) *((int32 *)(T)) \ - : ((*(A))->attlen < sizeof(int16) \ - ? (char *) (long) *((char *)(T)) \ - : (char *) (long) *((int16 *)(T)))) \ - : (char *) (T)) - -#endif |