Numbers and number systems

20-Dec-00


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Table of Contents

Numbers and number systems

Radix number systems

Start with whole numbers

Decimal, binary, octal, hex

Converting

Include fractions

Negatives

Ways to represent negatives

2’s complement

Does this work?

Excess something

Binary arithmetic - addition

Binary arithmetic - multiplication

Fractions

Overflow and Underflow

How to represent fractional values in binary

Floating point notation

Refinement

IEEE Standard 754

Steps to IEEE format

Single and double precision

IEEE 754 details

What’s normal?

Denormalization

Representing Zero

Infinity

NaN (Not a Number)

IEEE numerical types summary

Author: Lillian N. Cassel

Email: cassel@acm.org

Home Page: http://lcassel.csc.villanova.edu

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