[Scipy-tickets] [SciPy] #1327: Provide float96 / float128 versions of exponential integral scipy.special.expi(x)

SciPy Trac scipy-tickets@scipy....
Fri Nov 12 08:42:48 CST 2010


#1327: Provide float96 / float128 versions of exponential integral
scipy.special.expi(x)
---------------------------+------------------------------------------------
 Reporter:  zyv            |       Owner:  pv   
     Type:  enhancement    |      Status:  new  
 Priority:  normal         |   Milestone:  0.9.0
Component:  scipy.special  |     Version:  0.8.0
 Keywords:                 |  
---------------------------+------------------------------------------------
 Hi!

 Exponential integral saturates very quickly and already for values > 800
 provokes an overflow.

 I could have used float96 / float128 as supported by numpy, however, when
 I try it, I get the following exception:

 TypeError: function not supported for these types, and can't coerce safely
 to supported types

 which implies, that it is not implemented (yet?). Therefore, I would like
 to request an extension of this function to the extended precision
 doubles.

 Thanks!

-- 
Ticket URL: <http://projects.scipy.org/scipy/ticket/1327>
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