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Re: Puzzled by IntegerPart

  • To: mathgroup at smc.vnet.net
  • Subject: [mg114607] Re: Puzzled by IntegerPart
  • From: James Stein <mathgroup at stein.org>
  • Date: Fri, 10 Dec 2010 02:29:25 -0500 (EST)

The puzzle is easily solved by observing that the fractional part is greater
than zero, verified by the fact that this input:
     FractionalPart [ 1.15*100 ] > 0
returns 'True".

More seriously, documentation for both IntegerPart and FractionalPart, in
"Possible Issues", warns about potential precision problems.  However, your
expression is so apparently innocent that one wonders why Mathematica cannot
do better...


On Thu, Dec 9, 2010 at 3:00 AM, Themis Matsoukas <tmatsoukas at me.com> wrote:

> IntegerPart[100*1.15]
>
> 114
>
> ???
>
> Themis
>
>


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