diff options
Diffstat (limited to 'src/include/storage/off.h')
| -rw-r--r-- | src/include/storage/off.h | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/src/include/storage/off.h b/src/include/storage/off.h index 759b30278a3..3eadb842a78 100644 --- a/src/include/storage/off.h +++ b/src/include/storage/off.h @@ -1,16 +1,16 @@ /*------------------------------------------------------------------------- * * off.h-- - * POSTGRES disk "offset" definitions. + * POSTGRES disk "offset" definitions. * * * Copyright (c) 1994, Regents of the University of California * - * $Id: off.h,v 1.2 1996/10/31 09:49:58 scrappy Exp $ + * $Id: off.h,v 1.3 1997/09/07 05:01:29 momjian Exp $ * *------------------------------------------------------------------------- */ -#ifndef OFF_H +#ifndef OFF_H #define OFF_H /* @@ -19,38 +19,38 @@ * this is a 1-based index into the linp (ItemIdData) array in the * header of each disk page. */ -typedef uint16 OffsetNumber; +typedef uint16 OffsetNumber; -#define InvalidOffsetNumber ((OffsetNumber) 0) -#define FirstOffsetNumber ((OffsetNumber) 1) -#define MaxOffsetNumber ((OffsetNumber) (BLCKSZ / sizeof(ItemIdData))) -#define OffsetNumberMask (0xffff) /* valid uint16 bits */ +#define InvalidOffsetNumber ((OffsetNumber) 0) +#define FirstOffsetNumber ((OffsetNumber) 1) +#define MaxOffsetNumber ((OffsetNumber) (BLCKSZ / sizeof(ItemIdData))) +#define OffsetNumberMask (0xffff) /* valid uint16 bits */ /* ---------------- - * support macros + * support macros * ---------------- */ /* * OffsetNumberIsValid -- - * True iff the offset number is valid. + * True iff the offset number is valid. */ #define OffsetNumberIsValid(offsetNumber) \ - ((bool) ((offsetNumber != InvalidOffsetNumber) && \ - (offsetNumber <= MaxOffsetNumber))) + ((bool) ((offsetNumber != InvalidOffsetNumber) && \ + (offsetNumber <= MaxOffsetNumber))) /* * OffsetNumberNext -- * OffsetNumberPrev -- - * Increments/decrements the argument. These macros look pointless - * but they help us disambiguate the different manipulations on - * OffsetNumbers (e.g., sometimes we substract one from an - * OffsetNumber to move back, and sometimes we do so to form a - * real C array index). + * Increments/decrements the argument. These macros look pointless + * but they help us disambiguate the different manipulations on + * OffsetNumbers (e.g., sometimes we substract one from an + * OffsetNumber to move back, and sometimes we do so to form a + * real C array index). */ #define OffsetNumberNext(offsetNumber) \ - ((OffsetNumber) (1 + (offsetNumber))) + ((OffsetNumber) (1 + (offsetNumber))) #define OffsetNumberPrev(offsetNumber) \ - ((OffsetNumber) (-1 + (offsetNumber))) + ((OffsetNumber) (-1 + (offsetNumber))) -#endif /* OFF_H */ +#endif /* OFF_H */ |