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path: root/newlib/libc/time/mktm_r.c
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Diffstat (limited to 'newlib/libc/time/mktm_r.c')
-rw-r--r--newlib/libc/time/mktm_r.c257
1 files changed, 0 insertions, 257 deletions
diff --git a/newlib/libc/time/mktm_r.c b/newlib/libc/time/mktm_r.c
deleted file mode 100644
index 4d4b4fab0..000000000
--- a/newlib/libc/time/mktm_r.c
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * mktm_r.c
- * Original Author: Adapted from tzcode maintained by Arthur David Olson.
- * Modifications: Changed to mktm_r and added __tzcalc_limits - 04/10/02, Jeff Johnston
- * Fixed bug in mday computations - 08/12/04, Alex Mogilnikov <alx@intellectronika.ru>
- * Fixed bug in __tzcalc_limits - 08/12/04, Alex Mogilnikov <alx@intellectronika.ru>
- *
- * Converts the calendar time pointed to by tim_p into a broken-down time
- * expressed as local time. Returns a pointer to a structure containing the
- * broken-down time.
- */
-
-#include <stdlib.h>
-#include <time.h>
-#include "local.h"
-
-static _CONST int mon_lengths[2][MONSPERYEAR] = {
- {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
- {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}
-} ;
-
-static _CONST int year_lengths[2] = {
- 365,
- 366
-} ;
-
-struct tm *
-_DEFUN (_mktm_r, (tim_p, res, is_gmtime),
- _CONST time_t * tim_p _AND
- struct tm *res _AND
- int is_gmtime)
-{
- long days, rem;
- time_t lcltime;
- int y;
- int yleap;
- _CONST int *ip;
- __tzinfo_type *tz = __gettzinfo ();
-
- /* base decision about std/dst time on current time */
- lcltime = *tim_p;
-
- days = ((long)lcltime) / SECSPERDAY;
- rem = ((long)lcltime) % SECSPERDAY;
- while (rem < 0)
- {
- rem += SECSPERDAY;
- --days;
- }
- while (rem >= SECSPERDAY)
- {
- rem -= SECSPERDAY;
- ++days;
- }
-
- /* compute hour, min, and sec */
- res->tm_hour = (int) (rem / SECSPERHOUR);
- rem %= SECSPERHOUR;
- res->tm_min = (int) (rem / SECSPERMIN);
- res->tm_sec = (int) (rem % SECSPERMIN);
-
- /* compute day of week */
- if ((res->tm_wday = ((EPOCH_WDAY + days) % DAYSPERWEEK)) < 0)
- res->tm_wday += DAYSPERWEEK;
-
- /* compute year & day of year */
- y = EPOCH_YEAR;
- if (days >= 0)
- {
- for (;;)
- {
- yleap = isleap(y);
- if (days < year_lengths[yleap])
- break;
- y++;
- days -= year_lengths[yleap];
- }
- }
- else
- {
- do
- {
- --y;
- yleap = isleap(y);
- days += year_lengths[yleap];
- } while (days < 0);
- }
-
- res->tm_year = y - YEAR_BASE;
- res->tm_yday = days;
- ip = mon_lengths[yleap];
- for (res->tm_mon = 0; days >= ip[res->tm_mon]; ++res->tm_mon)
- days -= ip[res->tm_mon];
- res->tm_mday = days + 1;
-
- if (!is_gmtime)
- {
- long offset;
- int hours, mins, secs;
-
- TZ_LOCK;
- if (_daylight)
- {
- if (y == tz->__tzyear || __tzcalc_limits (y))
- res->tm_isdst = (tz->__tznorth
- ? (*tim_p >= tz->__tzrule[0].change
- && *tim_p < tz->__tzrule[1].change)
- : (*tim_p >= tz->__tzrule[0].change
- || *tim_p < tz->__tzrule[1].change));
- else
- res->tm_isdst = -1;
- }
- else
- res->tm_isdst = 0;
-
- offset = (res->tm_isdst == 1
- ? tz->__tzrule[1].offset
- : tz->__tzrule[0].offset);
-
- hours = (int) (offset / SECSPERHOUR);
- offset = offset % SECSPERHOUR;
-
- mins = (int) (offset / SECSPERMIN);
- secs = (int) (offset % SECSPERMIN);
-
- res->tm_sec -= secs;
- res->tm_min -= mins;
- res->tm_hour -= hours;
-
- if (res->tm_sec >= SECSPERMIN)
- {
- res->tm_min += 1;
- res->tm_sec -= SECSPERMIN;
- }
- else if (res->tm_sec < 0)
- {
- res->tm_min -= 1;
- res->tm_sec += SECSPERMIN;
- }
- if (res->tm_min >= MINSPERHOUR)
- {
- res->tm_hour += 1;
- res->tm_min -= MINSPERHOUR;
- }
- else if (res->tm_min < 0)
- {
- res->tm_hour -= 1;
- res->tm_min += MINSPERHOUR;
- }
- if (res->tm_hour >= HOURSPERDAY)
- {
- ++res->tm_yday;
- ++res->tm_wday;
- if (res->tm_wday > 6)
- res->tm_wday = 0;
- ++res->tm_mday;
- res->tm_hour -= HOURSPERDAY;
- if (res->tm_mday > ip[res->tm_mon])
- {
- res->tm_mday -= ip[res->tm_mon];
- res->tm_mon += 1;
- if (res->tm_mon == 12)
- {
- res->tm_mon = 0;
- res->tm_year += 1;
- res->tm_yday = 0;
- }
- }
- }
- else if (res->tm_hour < 0)
- {
- res->tm_yday -= 1;
- res->tm_wday -= 1;
- if (res->tm_wday < 0)
- res->tm_wday = 6;
- res->tm_mday -= 1;
- res->tm_hour += 24;
- if (res->tm_mday == 0)
- {
- res->tm_mon -= 1;
- if (res->tm_mon < 0)
- {
- res->tm_mon = 11;
- res->tm_year -= 1;
- res->tm_yday = 365 + isleap(res->tm_year);
- }
- res->tm_mday = ip[res->tm_mon];
- }
- }
- TZ_UNLOCK;
- }
- else
- res->tm_isdst = 0;
-
- return (res);
-}
-
-int
-_DEFUN (__tzcalc_limits, (year),
- int year)
-{
- int days, year_days, years;
- int i, j;
- __tzinfo_type *tz = __gettzinfo ();
-
- if (year < EPOCH_YEAR)
- return 0;
-
- tz->__tzyear = year;
-
- years = (year - EPOCH_YEAR);
-
- year_days = years * 365 +
- (years - 1 + EPOCH_YEARS_SINCE_LEAP) / 4 - (years - 1 + EPOCH_YEARS_SINCE_CENTURY) / 100 +
- (years - 1 + EPOCH_YEARS_SINCE_LEAP_CENTURY) / 400;
-
- for (i = 0; i < 2; ++i)
- {
- if (tz->__tzrule[i].ch == 'J')
- days = year_days + tz->__tzrule[i].d +
- (isleap(year) && tz->__tzrule[i].d >= 60);
- else if (tz->__tzrule[i].ch == 'D')
- days = year_days + tz->__tzrule[i].d;
- else
- {
- int yleap = isleap(year);
- int m_day, m_wday, wday_diff;
- _CONST int *ip = mon_lengths[yleap];
-
- days = year_days;
-
- for (j = 1; j < tz->__tzrule[i].m; ++j)
- days += ip[j-1];
-
- m_wday = (EPOCH_WDAY + days) % DAYSPERWEEK;
-
- wday_diff = tz->__tzrule[i].d - m_wday;
- if (wday_diff < 0)
- wday_diff += DAYSPERWEEK;
- m_day = (tz->__tzrule[i].n - 1) * DAYSPERWEEK + wday_diff;
-
- while (m_day >= ip[j-1])
- m_day -= DAYSPERWEEK;
-
- days += m_day;
- }
-
- /* store the change-over time in GMT form by adding offset */
- tz->__tzrule[i].change = days * SECSPERDAY +
- tz->__tzrule[i].s + tz->__tzrule[i].offset;
- }
-
- tz->__tznorth = (tz->__tzrule[0].change < tz->__tzrule[1].change);
-
- return 1;
-}
-
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