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Re: standard floating point arithmetic in Mathematica?

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  • Subject: [mg132493] Re: standard floating point arithmetic in Mathematica?
  • From: David Annetts <david.annetts at>
  • Date: Sun, 30 Mar 2014 04:42:31 -0400 (EDT)
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  • References: <lh0pbt$m4l$> <>

Hi Richard,

The package was NumericalMath`Microscope, the functionality of which, 
has been included (apparently) in ``ComputerArithmetic.


On 29/03/2014 14:14, Richard Fateman wrote:
> On 3/27/2014 2:00 AM, Alan wrote:
>> I would like to illustrate some limitations with floating point
>> calculations.  Can I force Mathematica to do floating point
>> computations at a standard float size and the display the full
>> results (as the same size float)?
>> E.g., if I enter 0.1+0.2 I would like to see 0.30000000000000004
>> Thanks, Alan Isaac
> If you are looking at the IEEE 754 binary standard, you would
> probably be better off looking at the hexadecimal representation
> because the decimal conversion adds complications and
> sometimes mystery.
> There is (or used to be) a floating point calculator online
> that provided these operations. I can't spot it right now, but it
> provided single/double  hex/binary/decimal   add/mult etc.
> It seems to me that Mathematica had some kind of package to extract
> fraction/exponent etc from IEEE numbers, and I expected someone
> to point this out.

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