#include <u.h>#include <libc.h> voidmain(int argc, char *argv[]){	long n;	char *p, *q; 	if(argc>1){		for(n = strtol(argv[1], &p, 0); n > 0; n--)			sleep(1000);		/*		 * no floating point because it is useful to		 * be able to run sleep when bootstrapping		 * a machine.		 */		if(*p++ == '.' && (n = strtol(p, &q, 10)) > 0){			switch(q - p){			case 0:				break;			case 1:				n *= 100;				break;			case 2:				n *= 10;				break;			default:				p[3] = 0;				n = strtol(p, 0, 10);				break;			}			sleep(n);		}	}	exits(0);}