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Standardize on just one spelling of BITSPERBYTE.

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This commit is contained in:
Tom Lane
2000-08-20 19:31:37 +00:00
parent 81ddc46c8c
commit d594eecde2
2 changed files with 10 additions and 18 deletions
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24
src/backend/lib/bit.c
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@ -8,40 +8,34 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/lib/Attic/bit.c,v 1.9 2000/01/26 05:56:26 momjian Exp $ * $Header: /cvsroot/pgsql/src/backend/lib/Attic/bit.c,v 1.10 2000/08/20 19:31:37 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
/*
* utils/memutils.h contains declarations of the functions in this file
*/
#include "postgres.h" #include "postgres.h"
#include "utils/bit.h" #include "utils/bit.h"
void void
BitArraySetBit(BitArray bitArray, BitIndex bitIndex) BitArraySetBit(BitArray bitArray, BitIndex bitIndex)
{ {
bitArray[bitIndex / BitsPerByte] bitArray[bitIndex / BITSPERBYTE] |=
|= (1 << (BitsPerByte - (bitIndex % BitsPerByte) - 1)); (1 << (BITSPERBYTE - 1 - (bitIndex % BITSPERBYTE)));
return;
} }
void void
BitArrayClearBit(BitArray bitArray, BitIndex bitIndex) BitArrayClearBit(BitArray bitArray, BitIndex bitIndex)
{ {
bitArray[bitIndex / BitsPerByte] bitArray[bitIndex / BITSPERBYTE] &=
&= ~(1 << (BitsPerByte - (bitIndex % BitsPerByte) - 1)); ~(1 << (BITSPERBYTE - 1 - (bitIndex % BITSPERBYTE)));
return;
} }
bool bool
BitArrayBitIsSet(BitArray bitArray, BitIndex bitIndex) BitArrayBitIsSet(BitArray bitArray, BitIndex bitIndex)
{ {
return ((bool) (((bitArray[bitIndex / BitsPerByte] & return ((bitArray[bitIndex / BITSPERBYTE] &
(1 << (BitsPerByte - (bitIndex % BitsPerByte) (1 << (BITSPERBYTE - 1 - (bitIndex % BITSPERBYTE)))
- 1) ) != 0);
)
) != 0) ? 1 : 0));
} }

4
src/include/utils/bit.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* $Id: bit.h,v 1.7 2000/01/26 05:58:37 momjian Exp $ * $Id: bit.h,v 1.8 2000/08/20 19:31:37 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -17,8 +17,6 @@
typedef bits8 *BitArray; typedef bits8 *BitArray;
typedef uint32 BitIndex; typedef uint32 BitIndex;
#define BitsPerByte 8
/* /*
* BitArraySetBit * BitArraySetBit
* Sets (to 1) the value of a bit in a bit array. * Sets (to 1) the value of a bit in a bit array.