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When using 'long long int' for int64 type, check to see if the compiler

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accepts nnnLL syntax for long long constants.  If so, decorate the CRC64
constants with LL to avoid warnings and/or erroneous results from certain
non-standards-compliant compilers.
This commit is contained in:
Tom Lane
2001-03-23 18:42:12 +00:00
parent 32924c1c90
commit e458ebfd21
5 changed files with 230 additions and 180 deletions
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13
src/include/utils/pg_crc.h
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: pg_crc.h,v 1.2 2001/03/22 04:01:14 momjian Exp $
* $Id: pg_crc.h,v 1.3 2001/03/23 18:42:12 tgl Exp $
*/
#ifndef PG_CRC_H
#define PG_CRC_H
@ -78,16 +78,23 @@ extern const uint32 crc_table1[];
#else /* int64 works */
/* decide if we need to decorate constants */
#ifdef HAVE_LL_CONSTANTS
#define INT64CONST(x) x##LL
#else
#define INT64CONST(x) x
#endif
typedef struct crc64
{
uint64 crc0;
} crc64;
/* Initialize a CRC accumulator */
#define INIT_CRC64(crc) ((crc).crc0 = (uint64) 0xffffffffffffffff)
#define INIT_CRC64(crc) ((crc).crc0 = INT64CONST(0xffffffffffffffff))
/* Finish a CRC calculation */
#define FIN_CRC64(crc) ((crc).crc0 ^= (uint64) 0xffffffffffffffff)
#define FIN_CRC64(crc) ((crc).crc0 ^= INT64CONST(0xffffffffffffffff))
/* Accumulate some (more) bytes into a CRC */
#define COMP_CRC64(crc, data, len) \