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MathGroup Archive 2001

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Re: A question on machine numbers

  • To: mathgroup at smc.vnet.net
  • Subject: [mg29915] Re: A question on machine numbers
  • From: "Orestis Vantzos" <atelesforos at hotmail.com>
  • Date: Wed, 18 Jul 2001 02:08:55 -0400 (EDT)
  • Organization: National Technical University of Athens, Greece
  • References: <9j0hji$fjq$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Windows ME, version 4, returns {True,True,True}
Orestis


"Ersek, Ted R" <ErsekTR at navair.navy.mil> wrote in message
news:9j0hji$fjq$1 at smc.vnet.net...
> Which if any platforms running Mathematica
> version 3 or 4 return something different for
> the following input.
> -----------
>
> In[1]:=
>   {N[2^-52] === $MachineEpsilon,
>    N[2^-1022] === $MinMachineNumber,
>    N[2^1024] === $MaxMachineNumber}
>
> Out[1]=
>   {True, True, True}
>
> -------------
> I understand this is the
> case for double precision on any computer which
> uses IEEE 754 floating point arithmetic.
>
>
> Thanks,
> Ted Ersek
>
>




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