hdr	utime
lib	gettimeofday,setitimer
mem	timeval.tv_usec sys/time.h
tst	lib_2_timeofday note{ 2 arg gettimeofday() }end link{
	#include <sys/types.h>
	#include <sys/time.h>
	int main()
	{
		struct timeval tv;
		struct timezone tz;
		return gettimeofday(&tv, &tz);
	}
}end
tst	lib_1_timeofday note{ 1 arg gettimeofday() }end link{
	#include <sys/types.h>
	#include <sys/time.h>
	int main()
	{
		struct timeval tv;
		return gettimeofday(&tv);
	}
}end
cat{
	#undef _def_time
	#include	<times.h>
	#define _def_time	1
	#undef timeofday
	#if _lib_2_timeofday
	#define timeofday(p)	gettimeofday(p,(struct timezone*)0)
	#else
	#if _lib_1_timeofday
	#define timeofday(p)	gettimeofday(p)
	#endif
	#endif
}end