Re: Re: Experimental`$EqualTolerance
- To: mathgroup at smc.vnet.net
- Subject: [mg105424] Re: [mg105396] Re: Experimental`$EqualTolerance
- From: Carl Woll <carlw at wolfram.com>
- Date: Wed, 2 Dec 2009 06:25:39 -0500 (EST)
- References: <968DB74B-05EC-42BA-9FF6-09B99B556FDE@mimuw.edu.pl> <200912010913.EAA18780@smc.vnet.net>
Andrzej Kozlowski wrote:
> O.K. I noticed my mistake. The functions do not exist in the
> Experimental context in Mathemaica 7.01 - what happened was that I
> created them by trying to check if they existed! That's an old trap that
> I have not fallen into for many years ;-)
>
> So it only leaves the question: it the old functionality still available
> in some way?
>
> Andrzej Kozlowski
>
I guess the context has changed to:
Internal`$EqualTolerance
Internal`$SameQTolerance
Carl Woll
Wolfram Research
>
>
> On 1 Dec 2009, at 11:07, Andrzej Kozlowski wrote:
>
>
>> The functions $EqualTolerance and $SameQToleranceexists in the
>>
> Experimantel context both in Mathematica 5.2 and in later versions. But
> while in 5.2 I get
>
>> In[1]:=
>> Experimental`$EqualTolerance
>>
>> Out[1]=
>> 2.10721
>>
>> In 7.01 I get:
>>
>> In[44]:= Experimental`$EqualTolerance
>>
>> Out[44]= Experimental`$EqualTolerance
>>
>> Further more, it seems that although the function name $EqualTolerance
>>
> has been retained in the Experimental context, the function itself no
> longer does anything. Compare:
>
>> Mathematica 5.2
>>
>> In[9]:=
>> Block[{Experimental`$EqualTolerance =16}, 1. == 2.]
>>
>> Out[9]=
>> True
>>
>> Mathematica 7.01
>>
>> In[58]:= Block[{Experimental`$EqualTolerance = 16}, 1. == 2.]
>>
>> Out[58]= False
>>
>>
>> Was keeping Experimental`$EqualTolerance while removing its definition
>>
> in Mathematica 7 just an oversight or does it still serve some purpose?
> And has the functionality been transferred to some other function?
>
>> Andrzej Kozlowski
>>
>
>
>
- References:
- Re: Experimental`$EqualTolerance
- From: Andrzej Kozlowski <akoz@mimuw.edu.pl>
- Re: Experimental`$EqualTolerance