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Re: Chop in Mathematica 8.0.1

  • To: mathgroup at smc.vnet.net
  • Subject: [mg117560] Re: Chop in Mathematica 8.0.1
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Tue, 22 Mar 2011 05:10:54 -0500 (EST)

I see the same but I'm running on the same OS.

$Version

"8.0 for Mac OS X x86 (64-bit) (February 23, 2011)"

f[a_] := 2 I Pi Sin[a]/a

f[1.] // Chop

0. + 5.287118128162912*I


Bob Hanlon

---- Andrzej Kozlowski <akoz at mimuw.edu.pl> wrote: 

=============
Chop does not seem to work properly in Mathematica 8.0.1:

f[a_] := 2 I Pi Sin[a]/a

In[2]:= f[1.]

Out[2]= 0. + 5.287118128162912*I

In[3]:= Chop[%]

Out[3]= 0. + 5.287118128162912*I

This is with 

In[4]:= $Version

Out[4]= 8.0 for Mac OS X x86 (64-bit) (February 23, 2011)

 Mathematica 7.01 returns 5.287118128162912*I as expected.

Can anyone confirm it? At the moment I can't see any simple work around...

Andrzej Kozlowski




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