Expressing floating point numbers in IEEE standard?

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Joe
Joe 2013-3-17
How would you express a floating point number in IEEE standard? There would be three parts, the sign, the biased exponent, and the mantissa. But I don't quite understand how you would even break down a floating point number into these three parts.

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the cyclist
the cyclist 2013-3-17
Did you look at my answer to your other question yet? Here:
http://www.mathworks.com/matlabcentral/answers/67491-the-mantissa-of-a-floating-point-number
The document I point you to in that answer talks about that exact topic. Here's the link again, for your convenience:
http://www.mathworks.com/company/newsletters/news_notes/pdf/Fall96Cleve.pdf

更多回答（2 个）

James Tursa
James Tursa 2013-3-17
In addition to the links provided in the previous answers I would point you to the MATLAB function [F,E] = log2(X) to extract the parts of the floating point number(s).
Walter Roberson
Walter Roberson 2013-3-17
MATLAB single and double precision numbers are already expressed in IEEE format internally.
There is an example of converting to the single precision form here

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