gnu: Add units.
* gnu/packages/maths.scm: New module. * gnu-system.am (GNU_SYSTEM_MODULES): Add module.
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@ -115,6 +115,7 @@ GNU_SYSTEM_MODULES = \
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gnu/packages/m4.scm \
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gnu/packages/mailutils.scm \
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gnu/packages/make-bootstrap.scm \
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gnu/packages/maths.scm \
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gnu/packages/mit-krb5.scm \
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gnu/packages/mp3.scm \
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gnu/packages/multiprecision.scm \
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@ -0,0 +1,60 @@
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013 Andreas Enge <andreas@enge.fr>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu packages maths)
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#:use-module (gnu packages)
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#:use-module ((guix licenses)
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#:renamer (symbol-prefix-proc 'license:))
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#:use-module (guix packages)
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#:use-module (guix download)
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#:use-module (guix build-system gnu))
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(define-public units
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(package
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(name "units")
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(version "2.01")
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(source (origin
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(method url-fetch)
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(uri (string-append "mirror://gnu/units/units-" version
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".tar.gz"))
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(sha256 (base32
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"1wl8kaxgk4l5jgc1f71mx1rwa6ib84krjmzyzn2f987z1g3i52qk"))))
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(build-system gnu-build-system)
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(synopsis "Conversion between thousands of scales")
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(description
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"GNU Units converts quantities expressed in various systems of
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measurement to their equivalents in other systems of measurement. Like
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many similar programs, it can handle multiplicative scale changes. It can
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also handle nonlinear conversions such as Fahrenheit to Celsius or wire
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gauge, and it can convert from and to sums of units, such as converting
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between meters and feet plus inches.
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Beyond simple unit conversions, GNU Units can be used as a general-purpose
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scientific calculator that keeps track of units in its calculations. You
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can form arbitrary complex mathematical expressions of dimensions including
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sums, products, quotients, powers, and even roots of dimensions. Thus you
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can ensure accuracy and dimensional consistency when working with long
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expressions that involve many different units that may combine in complex
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ways.
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The units are defined in an external data file. You can use the extensive
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data file that comes with this program, or you can provide your own data
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file to suit your needs. You can also use your own data file to supplement
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the standard data file.")
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(license license:gpl3+)
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(home-page "http://www.gnu.org/software/units/")))
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