Re: Chop in Mathematica 8.0.1
- To: mathgroup at smc.vnet.net
- Subject: [mg117527] Re: Chop in Mathematica 8.0.1
- From: Virgil Stokes <vs at it.uu.se>
- Date: Tue, 22 Mar 2011 05:04:50 -0500 (EST)
On 21-Mar-2011 12:18, Andrzej Kozlowski 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 > I can confirm this for vers. 8.0.1.0 and vers. 7.0.1.0. On a windows Vista 32-bit platform the Chop leaves 0. for the Real part in vers. 8.0.1.0 but not for vers. 7.0.1.0 --- as shown in the Andrzej's code. --V