Flating number point system, how do I get the mantissa?

Question

floating-point number system,how do I get mantissa?

ok, I'm really having an issue with getting mantissa, the 23 bit part of the SP ; I don't get the DP's too by the way, I just don't understand how to convert it.

Given: S = Sign E’ = Exponent F = Fraction

(is this necessary?, isn't this always given?)

Where: 1.F = Mantissa

(what does this mean?, what's F?)

// means my assumed answer, If I have one

A. Represent +1.11012 x 25 in IEEE DP format.

a. What is the value of the sign bit? //0

b. What is the 11-bit value of E’? // 010000010

c. What is the hexadecimal equivalent of the IEEE DP format?

B. Given an IEEE SP number 41A0 0000h

a. What is the value of the sign bit? // 1

b. What is the 8-bit value of E’?

c. What is the binary floating-point number being represented by the given?

C. What is the normalized form of 1001.00112 x 25?

please someone help

Answer 1

Google IEEE format.

Here's a cool calculator:

http://babbage.cs.qc.edu/IEEE-754/Decima...

There is a hex converter if you scroll down lower.

This link is succinct:

http://www.psc.edu/general/software/pack...

The Wiki entry is a little easier:

http://en.wikipedia.org/wiki/IEEE_754

Answer 2

OMG~i haven't heard the word "mantissa" since college and i don't want to say how long ago that was. sorry, i can't help you but thanks for the memories