Re: Puzzled by IntegerPart
- To: mathgroup at smc.vnet.net
- Subject: [mg114626] Re: Puzzled by IntegerPart
- From: Patrick Scheibe <pscheibe at trm.uni-leipzig.de>
- Date: Fri, 10 Dec 2010 02:32:55 -0500 (EST)
Check this
In[20]:= RealDigits[100*1.15]
Out[20]= {{1, 1, 4, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9}, 3}
and have a look at the binary representation
In[21]:= BaseForm[1.15,2]
Out[21]//BaseForm= Subscript[1.0010011001100110011, 2]
1.15 has an exact representation in base 10 but is a periodic number
which will be truncated in base 2.
Cheers
Patrick
On Thu, 2010-12-09 at 06:00 -0500, Themis Matsoukas wrote:
> IntegerPart[100*1.15]
>
> 114
>
> ???
>
> Themis
>