Brandon Enright on Fri, 26 Jan 2018 00:07:52 +0100


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Re: Parser use and abuse


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On Thu, 25 Jan 2018 22:59:32 +0000
Jacques Gélinas <jacquesg00@hotmail.com> wrote:

> After years of receiving warnings from the Pari/GP parser because of
> a typo, I finally got a pleasant surprise after typing a single dot
> on an input line: the parser returned the working precision (:-) !
> 
> # .
> %1 = 0.E-19
> 
> Any other such unexpected parser features ?


I believe this is just being interpreted as '0.0' which you can also get
by entering '0.' or '.0'.

In other words, I think it's not really a parser feature that . is
treated in some special way but that it's being treated as though
you've entered a float.

If you want to see the working precision, use '\p'

Brandon
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