Re: pi seems not to be a constant

Yes they are not the same if you save them across long-float-digits changes. Neither eql or =.

Sent from my iPhone

> On 22 Oct 2015, at 16:36, <[email protected]> <[email protected]> wrote:
> 
> Hi,
> 
>> 1L0 is always 1L0, whatever the long-float-digits.
>> However not all 1L0's are the same.
>> (/ 1L0 3)
>> 0.33333333333333333334L0
>> (setf (ext:long-float-digits) 128)
>> (/ 1L0 3)
>> 0.333333333333333333333333333333333333334L0
> 
> It just occurred to me that one could, in theory, blame CLISP for
> not implementing *print-readably* correctly, since the output does
> not mention the number of long-float-digits, does it?
> 
> Looking closer upon the notion of "similarity" in CLHS
> http://www.lispworks.com/documentation/lw51/CLHS/Body/03_bdbb.htm
> it appears that what CLISP does is ok, isn't it?
> 
> "Two numbers S and C are similar if they are of the same type and represent the same mathematical value."
> 
> Or one argues that the above values are not the same?
> 
> Regards,
> Jörg Höhle
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