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-rw-r--r--newlib/libc/time/mktime.c264
1 files changed, 0 insertions, 264 deletions
diff --git a/newlib/libc/time/mktime.c b/newlib/libc/time/mktime.c
deleted file mode 100644
index 938513233..000000000
--- a/newlib/libc/time/mktime.c
+++ /dev/null
@@ -1,264 +0,0 @@
-/*
- * mktime.c
- * Original Author: G. Haley
- *
- * Converts the broken-down time, expressed as local time, in the structure
- * pointed to by tim_p into a calendar time value. The original values of the
- * tm_wday and tm_yday fields of the structure are ignored, and the original
- * values of the other fields have no restrictions. On successful completion
- * the fields of the structure are set to represent the specified calendar
- * time. Returns the specified calendar time. If the calendar time can not be
- * represented, returns the value (time_t) -1.
- *
- * Modifications: Fixed tm_isdst usage - 27 August 2008 Craig Howland.
- */
-
-/*
-FUNCTION
-<<mktime>>---convert time to arithmetic representation
-
-INDEX
- mktime
-
-ANSI_SYNOPSIS
- #include <time.h>
- time_t mktime(struct tm *<[timp]>);
-
-TRAD_SYNOPSIS
- #include <time.h>
- time_t mktime(<[timp]>)
- struct tm *<[timp]>;
-
-DESCRIPTION
-<<mktime>> assumes the time at <[timp]> is a local time, and converts
-its representation from the traditional representation defined by
-<<struct tm>> into a representation suitable for arithmetic.
-
-<<localtime>> is the inverse of <<mktime>>.
-
-RETURNS
-If the contents of the structure at <[timp]> do not form a valid
-calendar time representation, the result is <<-1>>. Otherwise, the
-result is the time, converted to a <<time_t>> value.
-
-PORTABILITY
-ANSI C requires <<mktime>>.
-
-<<mktime>> requires no supporting OS subroutines.
-*/
-
-#include <stdlib.h>
-#include <time.h>
-#include "local.h"
-
-#define _SEC_IN_MINUTE 60L
-#define _SEC_IN_HOUR 3600L
-#define _SEC_IN_DAY 86400L
-
-static _CONST int DAYS_IN_MONTH[12] =
-{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-
-#define _DAYS_IN_MONTH(x) ((x == 1) ? days_in_feb : DAYS_IN_MONTH[x])
-
-static _CONST int _DAYS_BEFORE_MONTH[12] =
-{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
-
-#define _ISLEAP(y) (((y) % 4) == 0 && (((y) % 100) != 0 || (((y)+1900) % 400) == 0))
-#define _DAYS_IN_YEAR(year) (_ISLEAP(year) ? 366 : 365)
-
-static void
-validate_structure (tim_p)
- struct tm *tim_p;
-{
- div_t res;
- int days_in_feb = 28;
-
- /* calculate time & date to account for out of range values */
- if (tim_p->tm_sec < 0 || tim_p->tm_sec > 59)
- {
- res = div (tim_p->tm_sec, 60);
- tim_p->tm_min += res.quot;
- if ((tim_p->tm_sec = res.rem) < 0)
- {
- tim_p->tm_sec += 60;
- --tim_p->tm_min;
- }
- }
-
- if (tim_p->tm_min < 0 || tim_p->tm_min > 59)
- {
- res = div (tim_p->tm_min, 60);
- tim_p->tm_hour += res.quot;
- if ((tim_p->tm_min = res.rem) < 0)
- {
- tim_p->tm_min += 60;
- --tim_p->tm_hour;
- }
- }
-
- if (tim_p->tm_hour < 0 || tim_p->tm_hour > 23)
- {
- res = div (tim_p->tm_hour, 24);
- tim_p->tm_mday += res.quot;
- if ((tim_p->tm_hour = res.rem) < 0)
- {
- tim_p->tm_hour += 24;
- --tim_p->tm_mday;
- }
- }
-
- if (tim_p->tm_mon > 11)
- {
- res = div (tim_p->tm_mon, 12);
- tim_p->tm_year += res.quot;
- if ((tim_p->tm_mon = res.rem) < 0)
- {
- tim_p->tm_mon += 12;
- --tim_p->tm_year;
- }
- }
-
- if (_DAYS_IN_YEAR (tim_p->tm_year) == 366)
- days_in_feb = 29;
-
- if (tim_p->tm_mday <= 0)
- {
- while (tim_p->tm_mday <= 0)
- {
- if (--tim_p->tm_mon == -1)
- {
- tim_p->tm_year--;
- tim_p->tm_mon = 11;
- days_in_feb =
- ((_DAYS_IN_YEAR (tim_p->tm_year) == 366) ?
- 29 : 28);
- }
- tim_p->tm_mday += _DAYS_IN_MONTH (tim_p->tm_mon);
- }
- }
- else
- {
- while (tim_p->tm_mday > _DAYS_IN_MONTH (tim_p->tm_mon))
- {
- tim_p->tm_mday -= _DAYS_IN_MONTH (tim_p->tm_mon);
- if (++tim_p->tm_mon == 12)
- {
- tim_p->tm_year++;
- tim_p->tm_mon = 0;
- days_in_feb =
- ((_DAYS_IN_YEAR (tim_p->tm_year) == 366) ?
- 29 : 28);
- }
- }
- }
-}
-
-time_t
-mktime (tim_p)
- struct tm *tim_p;
-{
- time_t tim = 0;
- long days = 0;
- int year, isdst, tm_isdst;
- __tzinfo_type *tz = __gettzinfo ();
-
- /* validate structure */
- validate_structure (tim_p);
-
- /* compute hours, minutes, seconds */
- tim += tim_p->tm_sec + (tim_p->tm_min * _SEC_IN_MINUTE) +
- (tim_p->tm_hour * _SEC_IN_HOUR);
-
- /* compute days in year */
- days += tim_p->tm_mday - 1;
- days += _DAYS_BEFORE_MONTH[tim_p->tm_mon];
- if (tim_p->tm_mon > 1 && _DAYS_IN_YEAR (tim_p->tm_year) == 366)
- days++;
-
- /* compute day of the year */
- tim_p->tm_yday = days;
-
- if (tim_p->tm_year > 10000
- || tim_p->tm_year < -10000)
- {
- return (time_t) -1;
- }
-
- /* compute days in other years */
- if (tim_p->tm_year > 70)
- {
- for (year = 70; year < tim_p->tm_year; year++)
- days += _DAYS_IN_YEAR (year);
- }
- else if (tim_p->tm_year < 70)
- {
- for (year = 69; year > tim_p->tm_year; year--)
- days -= _DAYS_IN_YEAR (year);
- days -= _DAYS_IN_YEAR (year);
- }
-
- /* compute day of the week */
- if ((tim_p->tm_wday = (days + 4) % 7) < 0)
- tim_p->tm_wday += 7;
-
- /* compute total seconds */
- tim += (days * _SEC_IN_DAY);
-
- /* Convert user positive into 1 */
- tm_isdst = tim_p->tm_isdst > 0 ? 1 : tim_p->tm_isdst;
- isdst = tm_isdst;
-
- if (_daylight)
- {
- int y = tim_p->tm_year + YEAR_BASE;
- if (y == tz->__tzyear || __tzcalc_limits (y))
- {
- /* calculate start of dst in dst local time and
- start of std in both std local time and dst local time */
- time_t startdst_dst = tz->__tzrule[0].change
- - (time_t) tz->__tzrule[1].offset;
- time_t startstd_dst = tz->__tzrule[1].change
- - (time_t) tz->__tzrule[1].offset;
- time_t startstd_std = tz->__tzrule[1].change
- - (time_t) tz->__tzrule[0].offset;
- /* if the time is in the overlap between dst and std local times */
- if (tim >= startstd_std && tim < startstd_dst)
- ; /* we let user decide or leave as -1 */
- else
- {
- isdst = (tz->__tznorth
- ? (tim >= startdst_dst && tim < startstd_std)
- : (tim >= startdst_dst || tim < startstd_std));
- /* if user committed and was wrong, perform correction, but not
- * if the user has given a negative value (which
- * asks mktime() to determine if DST is in effect or not) */
- if (tm_isdst >= 0 && (isdst ^ tm_isdst) == 1)
- {
- /* we either subtract or add the difference between
- time zone offsets, depending on which way the user got it
- wrong. The diff is typically one hour, or 3600 seconds,
- and should fit in a 16-bit int, even though offset
- is a long to accomodate 12 hours. */
- int diff = (int) (tz->__tzrule[0].offset
- - tz->__tzrule[1].offset);
- if (!isdst)
- diff = -diff;
- tim_p->tm_sec += diff;
- validate_structure (tim_p);
- tim += diff; /* we also need to correct our current time calculation */
- }
- }
- }
- }
-
- /* add appropriate offset to put time in gmt format */
- if (isdst == 1)
- tim += (time_t) tz->__tzrule[1].offset;
- else /* otherwise assume std time */
- tim += (time_t) tz->__tzrule[0].offset;
-
- /* reset isdst flag to what we have calculated */
- tim_p->tm_isdst = isdst;
-
- return tim;
-}
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