timeofday          66 thread.c       static double timeofday(void);
timeofday         605 thread.c       	    now = timeofday();
timeofday         627 thread.c           arg.limit = timeofday() + delay;
timeofday        2343 thread.c       	limit = timeofday();
timeofday        2412 thread.c       		double d = limit - timeofday();