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Floating-point numbers range

Otto Deckelman
Ranch Hand

Joined: Mar 28, 2001
Posts: 30
Can someone explain what the range of a float actually means.
example: 1.4E-45 to 3.4E+38
Marilyn de Queiroz
Sheriff

Joined: Jul 22, 2000
Posts: 9044
    
  10
1.4E-45 means
1.4*10^-45 (E stands for "exponent")
(i.e. 0.000000000000000000000000000000000000000000014)

This is the smallest possible positive float number

3.4E+38 means
3.4*10^38
(i.e. 340,000,000,000,000,000,000,000,000,000,000,000,000)

This represents the largest possible postive float number.

Remember that there are also negative float numbers.


JavaBeginnersFaq
"Yesterday is history, tomorrow is a mystery, and today is a gift; that's why they call it the present." Eleanor Roosevelt
Otto Deckelman
Ranch Hand

Joined: Mar 28, 2001
Posts: 30
Marilyn, thanks alot...your explanation really helps
 
Don't get me started about those stupid light bulbs.
 
subject: Floating-point numbers range
 
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