L_SET
lseek(f, ((long)u)-((long)utmp), L_SET);
case L_SET:
case L_SET:
(void)fseek(inf, lineftell, L_SET);
(void)fseek(inf, saveftell, L_SET);
lseek(outfd, 0, L_SET);
lseek(outfd, 0, L_SET);