Can you explain the flowchart of floating-point addition and subtraction?

Computer Networking: A Top-Down Approach (7th Edition)
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ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
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Can you explain the flowchart of floating-point addition and subtraction?

SUBTRACT
Add
Results
normalized?
Yes
Yes
Exponents
equal?
Round
signed
significands
result
Change
sign of Y
No
No
Yes
Shift
RETURN
Increment
Z-0
Significand
significand
left
No
smaller
=0?
No
exponent
ADD
X = 0?
Y = 0?
No
Yes
RETURN
Decrement
Yes
Shift
exponent
No
significand
right
Significand
overflow?
Z-Y
Z-X
Yes
No
Exponent
underflow?
RETURN
Shift
No
Significand
significand
right
Yes
=0?
Report
underflow
Yes
Increment
exponent
Put other
RETURN
number in Z
RETURN
Yes
No
Exponent
overflow?
Report
overflow
RETURN
Transcribed Image Text:SUBTRACT Add Results normalized? Yes Yes Exponents equal? Round signed significands result Change sign of Y No No Yes Shift RETURN Increment Z-0 Significand significand left No smaller =0? No exponent ADD X = 0? Y = 0? No Yes RETURN Decrement Yes Shift exponent No significand right Significand overflow? Z-Y Z-X Yes No Exponent underflow? RETURN Shift No Significand significand right Yes =0? Report underflow Yes Increment exponent Put other RETURN number in Z RETURN Yes No Exponent overflow? Report overflow RETURN
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