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Update DAYS_PER_MONTH comment.

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Add SECS_PER_YEAR and MINS_PER_HOUR macros.
This commit is contained in:
Bruce Momjian
2005-07-21 18:06:13 +00:00
parent a0407f508a
commit e6b72d6af6
11 changed files with 82 additions and 71 deletions
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10
src/interfaces/ecpg/pgtypeslib/dt.h
View File

@ -221,16 +221,22 @@ do { \
#define MONTHS_PER_YEAR 12
/*
* DAYS_PER_MONTH is very imprecise. The more accurate value is
* 365.25/12 = 30.4375, or '30 days 10:30:00'. Right now we only
* 365.2425/12 = 30.436875, or '30 days 10:29:06'. Right now we only
* return an integral number of days, but someday perhaps we should
* also return a 'time' value to be used as well.
*/
#define DAYS_PER_MONTH 30 /* assumes exactly 30 days per month */
#define HOURS_PER_DAY 24 /* assume no daylight savings time changes */
#define SECS_PER_DAY 86400 /* assumes no leap second */
/*
* This doesn't adjust for uneven daylight savings time intervals, nor
* leap seconds.
*/
#define SECS_PER_YEAR (36525 * 864) /* avoid floating-point computation */
#define SECS_PER_DAY 86400
#define SECS_PER_HOUR 3600
#define SECS_PER_MINUTE 60
#define MINS_PER_HOUR 60
#ifdef HAVE_INT64_TIMESTAMP
#define USECS_PER_DAY INT64CONST(86400000000)

28
src/interfaces/ecpg/pgtypeslib/dt_common.c
View File

@ -814,7 +814,7 @@ EncodeDateTime(struct tm * tm, fsec_t fsec, int *tzp, char **tzn, int style, cha
if (tzp != NULL && tm->tm_isdst >= 0)
{
hour = -(*tzp / SECS_PER_HOUR);
min = (abs(*tzp) / SECS_PER_MINUTE) % SECS_PER_MINUTE;
min = (abs(*tzp) / MINS_PER_HOUR) % MINS_PER_HOUR;
sprintf(str + strlen(str), (min != 0) ? "%+03d:%02d" : "%+03d", hour, min);
}
break;
@ -862,7 +862,7 @@ EncodeDateTime(struct tm * tm, fsec_t fsec, int *tzp, char **tzn, int style, cha
else
{
hour = -(*tzp / SECS_PER_HOUR);
min = (abs(*tzp) / SECS_PER_MINUTE) % SECS_PER_MINUTE;
min = (abs(*tzp) / MINS_PER_HOUR) % MINS_PER_HOUR;
sprintf(str + strlen(str), (min != 0) ? "%+03d:%02d" : "%+03d", hour, min);
}
}
@ -908,7 +908,7 @@ EncodeDateTime(struct tm * tm, fsec_t fsec, int *tzp, char **tzn, int style, cha
else
{
hour = -(*tzp / SECS_PER_HOUR);
min = (abs(*tzp) / SECS_PER_MINUTE) % SECS_PER_MINUTE;
min = (abs(*tzp) / MINS_PER_HOUR) % MINS_PER_HOUR;
sprintf(str + strlen(str), (min != 0) ? "%+03d:%02d" : "%+03d", hour, min);
}
}
@ -971,7 +971,7 @@ EncodeDateTime(struct tm * tm, fsec_t fsec, int *tzp, char **tzn, int style, cha
* 2001-10-19
*/
hour = -(*tzp / SECS_PER_HOUR);
min = (abs(*tzp) / SECS_PER_MINUTE) % SECS_PER_MINUTE;
min = (abs(*tzp) / MINS_PER_HOUR) % MINS_PER_HOUR;
sprintf(str + strlen(str), (min != 0) ? " %+03d:%02d" : " %+03d", hour, min);
}
}
@ -1161,7 +1161,7 @@ DetermineLocalTimeZone(struct tm * tm)
day = (date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) -
date2j(1970, 1, 1));
mysec = tm->tm_sec + (tm->tm_min + (day * HOURS_PER_DAY + tm->tm_hour) * SECS_PER_MINUTE) * SECS_PER_MINUTE;
mysec = tm->tm_sec + (tm->tm_min + (day * HOURS_PER_DAY + tm->tm_hour) * MINS_PER_HOUR) * SECS_PER_MINUTE;
mytime = (time_t) mysec;
/*
@ -1171,7 +1171,7 @@ DetermineLocalTimeZone(struct tm * tm)
tmp = localtime(&mytime);
day = (date2j(tmp->tm_year + 1900, tmp->tm_mon + 1, tmp->tm_mday) -
date2j(1970, 1, 1));
locsec = tmp->tm_sec + (tmp->tm_min + (day * HOURS_PER_DAY + tmp->tm_hour) * SECS_PER_MINUTE) * SECS_PER_MINUTE;
locsec = tmp->tm_sec + (tmp->tm_min + (day * HOURS_PER_DAY + tmp->tm_hour) * MINS_PER_HOUR) * SECS_PER_MINUTE;
/*
* The local time offset corresponding to that GMT time is now
@ -1201,7 +1201,7 @@ DetermineLocalTimeZone(struct tm * tm)
tmp = localtime(&mytime);
day = (date2j(tmp->tm_year + 1900, tmp->tm_mon + 1, tmp->tm_mday) -
date2j(1970, 1, 1));
locsec = tmp->tm_sec + (tmp->tm_min + (day * HOURS_PER_DAY + tmp->tm_hour) * SECS_PER_MINUTE) * SECS_PER_MINUTE;
locsec = tmp->tm_sec + (tmp->tm_min + (day * HOURS_PER_DAY + tmp->tm_hour) * MINS_PER_HOUR) * SECS_PER_MINUTE;
delta2 = mysec - locsec;
if (delta2 != delta1)
{
@ -1210,7 +1210,7 @@ DetermineLocalTimeZone(struct tm * tm)
tmp = localtime(&mytime);
day = (date2j(tmp->tm_year + 1900, tmp->tm_mon + 1, tmp->tm_mday) -
date2j(1970, 1, 1));
locsec = tmp->tm_sec + (tmp->tm_min + (day * HOURS_PER_DAY + tmp->tm_hour) * SECS_PER_MINUTE) * SECS_PER_MINUTE;
locsec = tmp->tm_sec + (tmp->tm_min + (day * HOURS_PER_DAY + tmp->tm_hour) * MINS_PER_HOUR) * SECS_PER_MINUTE;
delta2 = mysec - locsec;
}
tm->tm_isdst = tmp->tm_isdst;
@ -1712,7 +1712,7 @@ DecodeTimezone(char *str, int *tzp)
else
min = 0;
tz = (hr * SECS_PER_MINUTE + min) * SECS_PER_MINUTE;
tz = (hr * MINS_PER_HOUR + min) * SECS_PER_MINUTE;
if (*str == '-')
tz = -tz;
@ -1752,7 +1752,7 @@ DecodePosixTimezone(char *str, int *tzp)
{
case DTZ:
case TZ:
*tzp = (val * SECS_PER_MINUTE) - tz;
*tzp = (val * MINS_PER_HOUR) - tz;
break;
default:
@ -2398,7 +2398,7 @@ DecodeDateTime(char **field, int *ftype, int nf,
tm->tm_isdst = 1;
if (tzp == NULL)
return -1;
*tzp += val * SECS_PER_MINUTE;
*tzp += val * MINS_PER_HOUR;
break;
case DTZ:
@ -2411,7 +2411,7 @@ DecodeDateTime(char **field, int *ftype, int nf,
tm->tm_isdst = 1;
if (tzp == NULL)
return -1;
*tzp = val * SECS_PER_MINUTE;
*tzp = val * MINS_PER_HOUR;
ftype[i] = DTK_TZ;
break;
@ -2419,7 +2419,7 @@ DecodeDateTime(char **field, int *ftype, int nf,
tm->tm_isdst = 0;
if (tzp == NULL)
return -1;
*tzp = val * SECS_PER_MINUTE;
*tzp = val * MINS_PER_HOUR;
ftype[i] = DTK_TZ;
break;
@ -3108,7 +3108,7 @@ PGTYPEStimestamp_defmt_scan(char **str, char *fmt, timestamp *d,
* timezone value of the datetktbl table is in
* quarter hours
*/
*tz = -15 * SECS_PER_MINUTE * datetktbl[j].value;
*tz = -15 * MINS_PER_HOUR * datetktbl[j].value;
break;
}
}

2
src/interfaces/ecpg/pgtypeslib/interval.c
View File

@ -723,7 +723,7 @@ tm2interval(struct tm *tm, fsec_t fsec, interval *span)
tm->tm_sec) * USECS_PER_SEC) + fsec;
#else
span->time = (((((tm->tm_mday * (double)HOURS_PER_DAY) +
tm->tm_hour) * (double)SECS_PER_MINUTE) +
tm->tm_hour) * (double)MINS_PER_HOUR) +
tm->tm_min) * (double)SECS_PER_MINUTE) +
tm->tm_sec;
span->time = JROUND(span->time + fsec);

4
src/interfaces/ecpg/pgtypeslib/timestamp.c
View File

@ -20,14 +20,14 @@ int PGTYPEStimestamp_defmt_scan(char **, char *, timestamp *, int *, int *, int
static int64
time2t(const int hour, const int min, const int sec, const fsec_t fsec)
{
return (((((hour * SECS_PER_MINUTE) + min) * SECS_PER_MINUTE) + sec) * USECS_PER_SEC) + fsec;
return (((((hour * MINS_PER_HOUR) + min) * SECS_PER_MINUTE) + sec) * USECS_PER_SEC) + fsec;
} /* time2t() */
#else
static double
time2t(const int hour, const int min, const int sec, const fsec_t fsec)
{
return (((hour * SECS_PER_MINUTE) + min) * SECS_PER_MINUTE) + sec + fsec;
return (((hour * MINS_PER_HOUR) + min) * SECS_PER_MINUTE) + sec + fsec;
} /* time2t() */
#endif