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Add time/date macros for code clarity:

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#define DAYS_PER_YEAR   365.25
	#define MONTHS_PER_YEAR 12
	#define DAYS_PER_MONTH  30
	#define HOURS_PER_DAY   24
This commit is contained in:
Bruce Momjian
2005-07-21 03:56:25 +00:00
parent dc73819f2e
commit a536b2dd80
17 changed files with 248 additions and 229 deletions
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34
src/backend/utils/adt/date.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/date.c,v 1.113 2005/07/20 16:42:30 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/date.c,v 1.114 2005/07/21 03:56:13 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -31,7 +31,7 @@
/*
* gcc's -ffast-math switch breaks routines that expect exact results from
* expressions like timeval / 3600, where timeval is double.
* expressions like timeval / SECS_PER_HOUR, where timeval is double.
*/
#ifdef __FAST_MATH__
#error -ffast-math is known to break this code
@@ -918,10 +918,10 @@ static int
tm2time(struct pg_tm * tm, fsec_t fsec, TimeADT *result)
{
#ifdef HAVE_INT64_TIMESTAMP
*result = ((((tm->tm_hour * 60 + tm->tm_min) * 60) + tm->tm_sec)
*result = ((((tm->tm_hour * SECS_PER_MINUTE + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec)
* USECS_PER_SEC) + fsec;
#else
*result = ((tm->tm_hour * 60 + tm->tm_min) * 60) + tm->tm_sec + fsec;
*result = ((tm->tm_hour * SECS_PER_MINUTE + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec + fsec;
#endif
return 0;
}
@@ -946,8 +946,8 @@ time2tm(TimeADT time, struct pg_tm * tm, fsec_t *fsec)
double trem;
trem = time;
TMODULO(trem, tm->tm_hour, 3600.0);
TMODULO(trem, tm->tm_min, 60.0);
TMODULO(trem, tm->tm_hour, (double)SECS_PER_HOUR);
TMODULO(trem, tm->tm_min, (double)SECS_PER_MINUTE);
TMODULO(trem, tm->tm_sec, 1.0);
*fsec = trem;
#endif
@@ -1348,10 +1348,10 @@ timestamp_time(PG_FUNCTION_ARGS)
* Could also do this with time = (timestamp / USECS_PER_DAY *
* USECS_PER_DAY) - timestamp;
*/
result = ((((tm->tm_hour * 60 + tm->tm_min) * 60) + tm->tm_sec) *
result = ((((tm->tm_hour * SECS_PER_MINUTE + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec) *
USECS_PER_SEC) + fsec;
#else
result = ((tm->tm_hour * 60 + tm->tm_min) * 60) + tm->tm_sec + fsec;
result = ((tm->tm_hour * SECS_PER_MINUTE + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec + fsec;
#endif
PG_RETURN_TIMEADT(result);
@@ -1385,10 +1385,10 @@ timestamptz_time(PG_FUNCTION_ARGS)
* Could also do this with time = (timestamp / USECS_PER_DAY *
* USECS_PER_DAY) - timestamp;
*/
result = ((((tm->tm_hour * 60 + tm->tm_min) * 60) + tm->tm_sec) *
result = ((((tm->tm_hour * SECS_PER_MINUTE + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec) *
USECS_PER_SEC) + fsec;
#else
result = ((tm->tm_hour * 60 + tm->tm_min) * 60) + tm->tm_sec + fsec;
result = ((tm->tm_hour * SECS_PER_MINUTE + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec + fsec;
#endif
PG_RETURN_TIMEADT(result);
@@ -1715,10 +1715,10 @@ static int
tm2timetz(struct pg_tm * tm, fsec_t fsec, int tz, TimeTzADT *result)
{
#ifdef HAVE_INT64_TIMESTAMP
result->time = ((((tm->tm_hour * 60 + tm->tm_min) * 60) + tm->tm_sec) *
result->time = ((((tm->tm_hour * SECS_PER_MINUTE + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec) *
USECS_PER_SEC) + fsec;
#else
result->time = ((tm->tm_hour * 60 + tm->tm_min) * 60) + tm->tm_sec + fsec;
result->time = ((tm->tm_hour * SECS_PER_MINUTE + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec + fsec;
#endif
result->zone = tz;
@@ -1843,8 +1843,8 @@ timetz2tm(TimeTzADT *time, struct pg_tm * tm, fsec_t *fsec, int *tzp)
#else
double trem = time->time;
TMODULO(trem, tm->tm_hour, 3600.0);
TMODULO(trem, tm->tm_min, 60.0);
TMODULO(trem, tm->tm_hour, (double)SECS_PER_HOUR);
TMODULO(trem, tm->tm_min, (double)SECS_PER_MINUTE);
TMODULO(trem, tm->tm_sec, 1.0);
*fsec = trem;
#endif
@@ -2399,13 +2399,13 @@ timetz_part(PG_FUNCTION_ARGS)
case DTK_TZ_MINUTE:
result = -tz;
result /= 60;
FMODULO(result, dummy, 60.0);
result /= SECS_PER_MINUTE;
FMODULO(result, dummy, (double)SECS_PER_MINUTE);
break;
case DTK_TZ_HOUR:
dummy = -tz;
FMODULO(dummy, result, 3600.0);
FMODULO(dummy, result, (double)SECS_PER_HOUR);
break;
case DTK_MICROSEC: