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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2012, 2013 Andreas Enge <andreas@enge.fr>
+;;; Copyright © 2013 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages algebra)
+  #:use-module (distro)
+  #:use-module (gnu packages multiprecision)
+  #:use-module (gnu packages perl)
+  #:use-module (gnu packages readline)
+  #:use-module (gnu packages flex)
+  #:use-module (guix licenses)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu))
+
+
+(define-public mpfrcx
+  (package
+   (name "mpfrcx")
+   (version "0.4.1")
+   (source (origin
+            (method url-fetch)
+            (uri (string-append
+                  "http://www.multiprecision.org/mpfrcx/download/mpfrcx-"
+                  version ".tar.gz"))
+            (sha256
+             (base32
+              "1rrc75chxyicqjgg5mfhgbz7p9mx1fgh0qlx14a82m25vfhifnd1"))))
+   (build-system gnu-build-system)
+   (inputs `(("gmp" ,gmp)
+             ("mpfr" ,mpfr)
+             ("mpc"  ,mpc)))
+   (synopsis "mpfrcx, a library for the arithmetic of univariate polynomials
+over arbitrary precision real or complex numbers")
+   (description
+    "mpfrcx is a library for the arithmetic of univariate polynomials over
+arbitrary precision real (mpfr) or complex (mpc) numbers, without control
+on the rounding. For the time being, only the few functions needed to
+implement the floating point approach to complex multiplication are
+implemented. On the other hand, these comprise asymptotically fast
+multiplication routines such as Toom–Cook and the FFT. ")
+   (license lgpl2.1+)
+   (home-page "http://mpfrcx.multiprecision.org/")))
+
+(define-public fplll
+  (package
+   (name "fplll")
+   (version "4.0.1")
+   (source (origin
+            (method url-fetch)
+            (uri (string-append
+                  "http://perso.ens-lyon.fr/damien.stehle/fplll/libfplll-"
+                  version ".tar.gz"))
+            (sha256 (base32
+                     "122bpqdlikshhd7nmq0l5qfc0agyk7x21gvplv1l9hb77l8cy9rw"))))
+   (build-system gnu-build-system)
+   (inputs `(("gmp" ,gmp)
+             ("mpfr" ,mpfr)))
+   (synopsis "fplll, a library for LLL-reduction of euclidean lattices")
+   (description
+    "fplll LLL-reduces euclidean lattices. Since version 3, it can also
+solve the shortest vector problem.")
+   (license lgpl2.1+)
+   (home-page "http://perso.ens-lyon.fr/damien.stehle/fplll/")))
+
+(define-public gsl
+  (package
+    (name "gsl")
+    (version "1.15")
+    (source
+     (origin
+      (method url-fetch)
+      (uri (string-append "mirror://gnu/gsl/gsl-"
+                          version ".tar.gz"))
+      (sha256
+       (base32
+        "18qf6jzz1r3mzb5qynywv4xx3z9g61hgkbpkdrhbgqh2g7jhgfc5"))))
+    (build-system gnu-build-system)
+    (home-page "http://www.gnu.org/software/gsl/")
+    (synopsis "The GNU Scientific Library, a large numerical library")
+    (description
+     "The GNU Scientific Library (GSL) is a numerical library for C
+and C++ programmers.  It is free software under the GNU General
+Public License.
+
+The library provides a wide range of mathematical routines such
+as random number generators, special functions and least-squares
+fitting.  There are over 1000 functions in total with an
+extensive test suite.")
+    (license gpl3+)))
+
+(define-public pari-gp
+  (package
+   (name "pari-gp")
+   (version "2.5.3")
+   (source (origin
+            (method url-fetch)
+            (uri (string-append
+                  "http://pari.math.u-bordeaux.fr/pub/pari/unix/pari-"
+                  version ".tar.gz"))
+            (sha256 (base32
+                     "0zsjccnnv00kwj2gk3ww2v530kjin1rgj8p8hbl4pwcnwc7m68gl"))))
+   (build-system gnu-build-system)
+   (inputs `(("gmp" ,gmp)
+             ("perl" ,perl)
+             ("readline" ,readline)))
+   (arguments
+    (lambda (system)
+      `(#:make-flags '("gp")
+;; FIXME: building the documentation requires tex; once this is available,
+;; replace "gp" by "all"
+        #:test-target "dobench"
+        #:phases
+        (alist-replace
+         'configure
+         (lambda* (#:key inputs outputs #:allow-other-keys)
+           (let ((out (assoc-ref outputs "out"))
+                 (readline (assoc-ref inputs "readline"))
+                 (gmp (assoc-ref inputs "gmp")))
+             (zero?
+              (system* "./Configure"
+                       (string-append "--prefix=" out)
+                       (string-append "--with-readline=" readline)
+                       (string-append "--with-gmp=" gmp)))))
+;; FIXME: readline and gmp will be detected automatically in the next
+;; stable release
+         %standard-phases))))
+   (synopsis "PARI/GP, a computer algebra system for number theory")
+   (description
+    "PARI/GP is a widely used computer algebra system designed for fast
+computations in number theory (factorisations, algebraic number theory,
+elliptic curves...), but it also contains a large number of other useful
+functions to compute with mathematical entities such as matrices,
+polynomials, power series, algebraic numbers, etc., and a lot of
+transcendental functions.
+PARI is also available as a C library to allow for faster computations.")
+   (license gpl2+)
+   (home-page "http://pari.math.u-bordeaux.fr/")))
+
+(define-public bc
+  (package
+    (name "bc")
+    (version "1.06")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append "mirror://gnu/bc/bc-" version ".tar.gz"))
+             (sha256
+              (base32
+               "0cqf5jkwx6awgd2xc2a0mkpxilzcfmhncdcfg7c9439wgkqxkxjf"))))
+    (build-system gnu-build-system)
+    (inputs `(("readline" ,readline)
+              ("flex" ,flex)))
+    (arguments
+     '(#:phases
+       (alist-replace 'configure
+                      (lambda* (#:key outputs #:allow-other-keys)
+                        ;; This old `configure' script doesn't support
+                        ;; variables passed as arguments.
+                        (let ((out (assoc-ref outputs "out")))
+                          (setenv "CONFIG_SHELL" (which "bash"))
+                          (zero?
+                           (system* "./configure"
+                                    (string-append "--prefix=" out)))))
+                      %standard-phases)))
+    (home-page "http://www.gnu.org/software/bc/")
+    (synopsis "GNU software calculator")
+    (description
+     "bc is an arbitrary precision numeric processing language. Syntax
+is similar to C, but differs in many substantial areas. It supports
+interactive execution of statements.  bc is a utility included in the
+POSIX P1003.2/D11 draft standard.
+
+Since the POSIX document does not specify how bc must be implemented,
+this version does not use the historical method of having bc be a
+compiler for the dc calculator.  This version has a single executable
+that both compiles the language and runs the resulting `byte code'. The
+byte code is not the dc language.")
+    (license gpl2+)))