[pstricks] how to use draw a circle of radius \sqrt{2} without using a calculator

[Luiz Fernando C Camargo]

Herbert Voss wrote:

> Luiz Fernando C Camargo schrieb:
> 
>> I know things like this
>>
>>   \SpecialCoor
>>   \pscircle(!2 sqrt 2 mul 1){3}
>>
>> Fine, but I can't figure out how to draw, say, a circle of center
>> (0,0) and radius \sqrt{2} without using a calculator. Is there an
>> easy way?
> 
> with current pstricks.tex you can write
> 
>   \SpecialCoor
>   \pscircle(!2 sqrt 2 mul 1){!2 sqrt}
> 
> Herbert

OK, it works now, with the new pstricks.tex.
Thank you, Herbert and Michael.