35/54: gnu: Add r-expint.

[guix-commits]

rekado pushed a commit to branch master
in repository guix.

commit 1830e0383b808a1a1b943f714335cf36efc38795
Author: Ricardo Wurmus <address@hidden>
Date:   Sat Dec 14 10:56:41 2019 +0100

    gnu: Add r-expint.
    
    * gnu/packages/cran.scm (r-expint): New variable.
---
 gnu/packages/cran.scm | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index ba322ee..7bb4726 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -18132,3 +18132,26 @@ plot the data.  The central type of plot is the 
actogram, as first described
 in \"Activity and distribution of certain wild mice in relation to biotic
 communities\" by MS Johnson (1926) @url{doi:10.2307/1373575}.")
     (license license:gpl3)))
+
+(define-public r-expint
+  (package
+    (name "r-expint")
+    (version "0.1-6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "expint" version))
+       (sha256
+        (base32
+         "0iai25cglcdnf44d2d1fz1xpw4q600my4zq4493fk4cs5673mlf7"))))
+    (properties `((upstream-name . "expint")))
+    (build-system r-build-system)
+    (home-page "https://gitlab.com/vigou3/expint";)
+    (synopsis "Exponential integral and incomplete Gamma function")
+    (description
+     "This package provides the exponential integrals @code{E_1(x)},
+@code{E_2(x)}, @code{E_n(x)} and @code{Ei(x)}, and the incomplete gamma
+function @code{G(a, x)} defined for negative values of its first argument.
+The package also gives easy access to the underlying C routines through an
+API; see the package vignette for details.")
+    (license license:gpl2+)))