gnu: r-subplex: Move to (gnu packages cran).

* gnu/packages/maths.scm (r-subplex): Move from here...
* gnu/packages/cran.scm (r-subplex): ...to here.

Signed-off-by: Ricardo Wurmus <rekado@elephly.net>

gnu/packages/cran.scm

@@ -15807,3 +15807,26 @@ linear algebra, numerical optimization, differential equations, plus some
 special functions.  It uses Matlab function names where appropriate to simplify
 porting.")
     (license license:gpl3+)))
+
+(define-public r-subplex
+  (package
+    (name "r-subplex")
+    (version "1.5-4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "subplex" version))
+       (sha256
+        (base32
+         "10cbgbx1bgsax5z7gz6716g360xpq4mvq19cf4qqrxv02mmwz57z"))))
+    (build-system r-build-system)
+    (native-inputs
+     `(("gfortran" ,gfortran)))
+    (home-page "https://cran.r-project.org/web/packages/subplex")
+    (synopsis "Unconstrained optimization using the subplex algorithm")
+    (description
+     "This package implements the Subplex optimization algorithm.
+It solves unconstrained optimization problems using a simplex method on
+subspaces.  The method is well suited for optimizing objective functions that
+are noisy or are discontinuous at the solution.")
+    (license license:gpl3+)))

gnu/packages/maths.scm

@@ -4344,28 +4344,6 @@ analysed.")
     (arguments
      '(#:configure-flags '("-DMCRL2_ENABLE_GUI_TOOLS=OFF")))))
 
-(define-public r-subplex
-  (package
-    (name "r-subplex")
-    (version "1.5-4")
-    (source
-    (origin
-      (method url-fetch)
-      (uri (cran-uri "subplex" version))
-      (sha256
-       (base32
-        "10cbgbx1bgsax5z7gz6716g360xpq4mvq19cf4qqrxv02mmwz57z"))))
-    (build-system r-build-system)
-    (native-inputs
-     `(("gfortran" ,gfortran)))
-    (home-page "https://cran.r-project.org/web/packages/subplex")
-    (synopsis "Unconstrained optimization using the subplex algorithm")
-    (description "This package implements the Subplex optimization algorithm.
-It solves unconstrained optimization problems using a simplex method on
-subspaces.  The method is well suited for optimizing objective functions that
-are noisy or are discontinuous at the solution.")
-    (license license:gpl3+)))
-
 (define-public tcalc
   (package
   (name "tcalc")