Binary num?

*To*: mathgroup at smc.vnet.net*Subject*: [mg25281] Binary num?*From*: "Joe" <jchristopher at home.com>*Date*: Tue, 19 Sep 2000 03:45:07 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

If I have the following number: 011101011.101 (235.625) How do I figure out what the number would be if it there was a n bit mantissa and rounded? How would I figure out the largest and smallest numbers with a n bit mantissa and exponent range [e1,e2]?