On Sat, Oct 09, 2004 at 07:50:49PM -0600, bingwang wrote: > what do u mean by 0xfffff001 ,is it -1 or -4095 > what is the representing way? This is hardly a question appropriate to this forum, but the following link may be of interest: http://www.vb-helper.com/tutorial_twos_complement.html -- Danny