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# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
from spack import *
class RDqrng(RPackage):
"""Several fast random number generators are provided as C++ header only
libraries: The PCG family by O'Neill (2014
<https://www.cs.hmc.edu/tr/hmc-cs-2014-0905.pdf>) as well as Xoroshiro128+
and Xoshiro256+ by Blackman and Vigna (2018 <arXiv:1805.01407>). In
addition fast functions for generating random numbers according to a
uniform, normal and exponential distribution are included. The latter two
use the Ziggurat algorithm originally proposed by Marsaglia and Tsang
(2000, <doi:10.18637/jss.v005.i08>). These functions are exported to R and
as a C++ interface and are enabled for use with the default 64 bit
generator from the PCG family, Xoroshiro128+ and Xoshiro256+ as well as the
64 bit version of the 20 rounds Threefry engine (Salmon et al., 2011
<doi:10.1145/2063384.2063405>) as provided by the package 'sitmo'."""
homepage = "https://www.daqana.org/dqrng"
url = "https://cloud.r-project.org/src/contrib/dqrng_0.2.1.tar.gz"
list_url = "https://cloud.r-project.org/src/contrib/Archive/dqrng"
version('0.2.1', sha256='e149c105b1db31e7f46b1aebf31d911a109e380923f3696fc56a53197fc1e866')
depends_on('r@3.1.0:', type=('build', 'run'))
depends_on('r-rcpp@0.12.16:', type=('build', 'run'))
depends_on('r-bh@1.64.0-1:', type=('build', 'run'))
depends_on('r-sitmo@2.0.0:', type=('build', 'run'))
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