gettimeofday.c
Author: cmaier@cmassoc.net

    /*====================================================================*
     *
     *   gettimeofday.c - get time of day for Windows;
     *
     *   A gettimeofday implementation for Microsoft Windows;
     *
     *   Public domain code, author "ponnada";
     *
     *--------------------------------------------------------------------*/

    #ifndef GETTIMEOFDAY_SOURCE
    #define GETTIMEOFDAY_SOURCE

    #include <time.h>
    #include <windows.h>
    #include <sys/time.h>

    int gettimeofday (struct timeval *tv, struct timezone *tz)

    {
    	FILETIME ft;
    	unsigned __int64 tmpres = 0;
    	static int tzflag = 0;
    	if (NULL != tv)
    	{
    		GetSystemTimeAsFileTime (&ft);
    		tmpres |= ft.dwHighDateTime;
    		tmpres <<= 32;
    		tmpres |= ft.dwLowDateTime;
    		tmpres /= 10;
    		tmpres -= DELTA_EPOCH_IN_MICROSECS;
    		tv->tv_sec = (long)(tmpres / 1000000UL);
    		tv->tv_usec = (long)(tmpres % 1000000UL);
    	}
    	if (NULL != tz)
    	{
    		if (!tzflag)
    		{
    			_tzset ();
    			tzflag++;
    		}
    		tz->tz_minuteswest = _timezone / 60;
    		tz->tz_dsttime = _daylight;
    	}
    	return 0;
    }

    #endif

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