
<A NAME=Constants>

<TITLE>Constants</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>CONSTANTS</B><P>
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There are a few constants known to the special function package, namely 
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 _ _ _ <em>Euler's constant </em>(which can be computed as -
<A HREF=r37_0493.html>Psi</A>(1)) and 
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 _ _ _ <em>Khinchin's constant</em> (which is defined in Khinchin's book 
 ``Continued Fractions'') and 
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 _ _ _ <em>Golden_Ratio</em> (which can be computed as (1 + sqrt 5)/2) and 
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 _ _ _ <em>Catalan's constant</em> (which is known as an infinite sum of recipro
cal 
powers) 
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 <P> <H3> 
examples: </H3>
<P><PRE><TT>
on rounded;
Euler_Gamma; 

  0.577215664902 


Khinchin; 

  2.68545200107 


Catalan 

  0.915965594177 


Golden_Ratio 

  1.61803398875

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