diff options
Diffstat (limited to 'newlib/libc/time/lcltime_r.c')
-rw-r--r-- | newlib/libc/time/lcltime_r.c | 90 |
1 files changed, 2 insertions, 88 deletions
diff --git a/newlib/libc/time/lcltime_r.c b/newlib/libc/time/lcltime_r.c index 1b4269ee1..cf386719c 100644 --- a/newlib/libc/time/lcltime_r.c +++ b/newlib/libc/time/lcltime_r.c @@ -1,104 +1,18 @@ /* * localtime_r.c - * Original Author: Adapted from tzcode maintained by Arthur David Olson. * * 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> - -#define SECSPERMIN 60L -#define MINSPERHOUR 60L -#define HOURSPERDAY 24L -#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR) -#define SECSPERDAY (SECSPERHOUR * HOURSPERDAY) -#define DAYSPERWEEK 7 -#define MONSPERYEAR 12 - -#define YEAR_BASE 1900 -#define EPOCH_YEAR 1970 -#define EPOCH_WDAY 4 - -#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0) - -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 -} ; +#include "local.h" struct tm * _DEFUN (localtime_r, (tim_p, res), _CONST time_t * tim_p _AND struct tm *res) { - long days, rem; - int y; - int yleap; - _CONST int *ip; - - days = ((long) *tim_p) / SECSPERDAY; - rem = ((long) *tim_p) % 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; - - /* set daylight saving time flag */ - res->tm_isdst = -1; - - return (res); + return _mktm_r (tim_p, res, 0); } |