newlib-cygwin/newlib/libc/sys/go32/gettimeo.c

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2000-02-18 03:39:52 +08:00
/*
(c) Copyright 1992 Eric Backus
This software may be used freely so long as this copyright notice is
left intact. There is no warrantee on this software.
*/
#include <time.h>
#include <sys/time.h>
#include "dos.h"
static int daylight, gmtoffset;
int
gettimeofday (struct timeval *tp, struct timezone *tzp)
{
if (tp)
{
struct time t;
struct date d;
struct tm tmrec;
gettime (&t);
getdate (&d);
tmrec.tm_year = d.da_year - 1900;
tmrec.tm_mon = d.da_mon - 1;
tmrec.tm_mday = d.da_day;
tmrec.tm_hour = t.ti_hour;
tmrec.tm_min = t.ti_min;
tmrec.tm_sec = t.ti_sec;
/* tmrec.tm_gmtoff = gmtoffset;*/
tmrec.tm_isdst = daylight;
tp->tv_sec = mktime (&tmrec);
tp->tv_usec = t.ti_hund * (1000000 / 100);
}
if (tzp)
{
tzp->tz_minuteswest = gmtoffset;
tzp->tz_dsttime = daylight;
}
return 0;
}
void
__gettimeofday_init ()
{
time_t ltm, gtm;
struct tm *lstm;
daylight = 0;
gmtoffset = 0;
ltm = gtm = time (NULL);
ltm = mktime (lstm = localtime (&ltm));
gtm = mktime (gmtime (&gtm));
daylight = lstm->tm_isdst;
gmtoffset = (int)(gtm - ltm) / 60;
}