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Fix (hopefully for the last time) problems with datetime values displaying

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like '23:59:60' because of fractional-second roundoff problems.  Trying
to control this upstream of the actual display code was hopeless; the right
way is to explicitly round fractional seconds in the display code and then
refigure the results if the fraction rounds up to 1.  Per bug #1927.
This commit is contained in:
Tom Lane
2005-10-09 17:21:47 +00:00
parent 7754f7634c
commit 313ed1ed94
10 changed files with 132 additions and 63 deletions
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9
src/include/utils/timestamp.h
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@@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/timestamp.h,v 1.55 2005/10/07 20:13:16 momjian Exp $
* $PostgreSQL: pgsql/src/include/utils/timestamp.h,v 1.56 2005/10/09 17:21:47 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -163,8 +163,11 @@ typedef int32 fsec_t;
typedef double fsec_t;
#define TIME_PREC_INV 1000000.0
#define JROUND(j) (rint(((double) (j)) * TIME_PREC_INV) / TIME_PREC_INV)
/* round off to MAX_TIMESTAMP_PRECISION decimal places */
/* note: this is also used for rounding off intervals */
#define TS_PREC_INV 1000000.0
#define TSROUND(j) (rint(((double) (j)) * TS_PREC_INV) / TS_PREC_INV)
#endif
#define TIMESTAMP_MASK(b) (1 << (b))