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

// make with the following commands:
//
//	gcc prog.c -fPIC -g -fno-omit-frame-pointer -I. -rdynamic -o prog -lpthread -ldl -lm

#define	NULL	((void *) 0)

#define UNIX_REFERENCE_INTERVAL -978307200.0	// from NSDate.h
#define	_FLP_	__FILE__, __LINE__, __PRETTY_FUNCTION__

void  xx_gettimeofday (struct timeval *tp, void *v)
{
    tp->tv_sec = 988941076;
    tp->tv_usec = 43238;
}

double
GSTimeNow()
{

   double interval;
  struct timeval tp;

  xx_gettimeofday (&tp, NULL);
  interval = UNIX_REFERENCE_INTERVAL;
  printf( "%s:%d %s  %13.0f    ( %08X %08X )\n", 
	  _FLP_, interval, interval );
  printf( "%s:%d %s  %13d    ( %08X )  %10d ( %08X )\n", 
	  _FLP_, tp.tv_sec, tp.tv_sec, tp.tv_usec, tp.tv_usec );
  interval += tp.tv_sec;
  printf( "%s:%d %s  %16.2f ( %08X %08X )\n", 
	  _FLP_, interval, interval );
  interval += (double)tp.tv_usec / 1000000.0;
  printf( "%s:%d %s  %16.2f ( %08X %08X )\n", 
	  _FLP_, interval, interval );
  return interval;
}

int main( int argc, char **argv)
{

    GSTimeNow();
    printf( "\n" );
    GSTimeNow();

    return 0;
}