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MathGroup Archive 2004

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RE: bug in IntegerPart ?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg47747] RE: [mg47736] bug in IntegerPart ?
  • From: "David Park" <djmp at earthlink.net>
  • Date: Sun, 25 Apr 2004 05:13:20 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Dennis,

FullForm[(1.65 - 1.3)/0.007]
49.999999999999986`

FullForm[(1.65 - 1.3)/0.007]
50.`

Does that solve the puzzle?

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/ 



From: Dennis de Lang [mailto:lang.NO at science.uva.nl]
To: mathgroup at smc.vnet.net

Why does the following happen?

In[1]:= (1.65 - 1.3)/0.007
Out[1]:= 50.
In[2]:= IntegerPart[%]
Out[2]:= 49

but:

In[1]:= 0.35/0.007
Out[1]:= 50.
In[2]:= IntegerPart[%]
Out[2]:= 50

I'm puzzled....
- Dennis





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