[R] Exponential integral

Ben Bolker bbolker at gmail.com
Wed Sep 29 20:23:52 CEST 2010


Mishra, Srikanta <MISHRAS <at> battelle.org> writes:

> 
> Is there an R function for evaluating the exponential integral
> 
> Ei(x) = INT(-inf,x) exp(t)/t dt


  Try the gsl package.
  Also library(sos); findFn("{exponential integral}")
although admittedly it doesn't find the Expint page
in the gsl package ...



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