Nothing
##
# @file pseudoRNG.R
# @brief R file for all pseudo RNGs
#
# @author Christophe Dutang
# @author Petr Savicky
#
#
# Copyright (C) 2019, Christophe Dutang,
# Petr Savicky, Academy of Sciences of the Czech Republic.
# Christophe Dutang, see http://dutangc.free.fr
# All rights reserved.
#
# The new BSD License is applied to this software.
# Copyright (c) 2019 Christophe Dutang, Petr Savicky.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# - Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# - Neither the name of the Academy of Sciences of the Czech Republic
# nor the names of its contributors may be used to endorse or promote
# products derived from this software without specific prior written
# permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#
#############################################################################
### pseudo random generation
###
### R functions
###
### set the seed ###
setSeed <- function(seed)
invisible( .Call("doSetSeed", seed) )
### pseudo random generation ###
congruRand <- function(n, dim = 1, mod = 2^31-1, mult = 16807, incr = 0, echo)
{
if(is.array(n) || !is.numeric(n))
stop("invalid argument 'n'")
if(length(dim) >1)
stop("invalid argument 'dim'")
if(!is.numeric(mod) || length(mod) !=1)
stop("invalid argument 'mod'")
if(!is.numeric(mult) || length(mult) != 1 || mult > mod || mult < 0)
stop("invalid argument 'mult'")
if(!is.numeric(incr) || length(incr) != 1 || incr > mod || incr < 0)
stop("invalid argument 'incr'")
if(mod >= 2^64)
warning("congruRand() does not correctly handle a modulo greater than or equal to 2^64, use runifInterface()")
if(missing(echo))
echo <- FALSE
nb <- ifelse(length(n)>1, length(n), n)
if(nb < 0) stop("invalid argumet 'n'")
if(nb == 0) return(numeric(0))
#implemented in src/randtoolbox.c
res <- .Call(CF_doCongruRand, nb, dim, mod, mult, incr, echo)
if(dim == 1)
as.vector(res)
else
as.matrix(res)
}
SFMT <- function(n, dim = 1, mexp = 19937, usepset = TRUE, withtorus = FALSE, usetime = FALSE)
{
if(is.array(n) || !is.numeric(n))
stop("invalid argument 'n'")
if(length(dim) >1)
stop("invalid argument 'dim'")
if(!is.logical(withtorus) && !is.numeric(withtorus))
stop("invalid argument 'withtorus'")
if(!is.numeric(mexp))
stop("invalid argument 'mexp'")
if(!is.logical(usepset))
stop("invalid argument 'usepset'")
authorizedParam <- c(607, 1279, 2281, 4253, 11213, 19937, 44497, 86243, 132049, 216091)
if( !(mexp %in% authorizedParam) )
stop("'mexp' must be in {607, 1279, 2281, 4253, 11213, 19937, 44497, 86243, 132049, 216091}. ")
if(!is.logical(withtorus))
{
if(0 < withtorus && withtorus <= 1)
nbTorus <- floor( withtorus * n )
if(withtorus <=0 || withtorus > 1)
stop("invalid argument 'withtorus'")
}
if(is.logical(withtorus))
{
if(!withtorus)
nbTorus <- 0
else
stop("invalid argument 'withtorus'")
}
nb <- ifelse(length(n)>1, length(n), n)
if(nb < 0) stop("invalid argumet 'n'")
if(nb == 0) return(numeric(0))
if(nbTorus == 0)
{
#implemented in src/randtoolbox.c
res <- .Call(CF_doSFMersenneTwister, nb, dim, mexp, usepset)
}else
{
restorus <- torus(nbTorus, dim, mixed = FALSE, usetime = usetime)
#implemented in src/randtoolbox.c
res <- .Call(CF_doSFMersenneTwister, nb - nbTorus, dim, mexp, usepset)
res <- rbind(res, as.matrix( restorus, nbTorus, dim) )
}
if(dim == 1)
as.vector(res)
else
as.matrix(res)
}
WELL <- function(n, dim = 1, order = 512, temper = FALSE, version = "a")
{
if(is.array(n) || !is.numeric(n))
stop("invalid argument 'n'")
if(length(dim) >1)
stop("invalid argument 'dim'")
if(!is.numeric(order))
stop("invalid argument 'order'")
if( !(order %in% c(512, 521, 607, 800, 1024, 19937, 21701, 23209, 44497) ) )
stop("'order' must be in {512, 521, 607, 800, 1024, 19937, 21071, 23209, 44497}.")
if( !(version %in% c("a", "b") ) )
stop("'version' must be either 'a' or 'b'.")
if(!is.logical(temper))
stop("invalid argument 'temper'")
if(temper && order %in% c(512, 521, 607, 1024))
stop("tempering impossible")
zeversion <- 0
if(version == "a")
zeversion <- 1
if(version == "b")
zeversion <- 2
if(zeversion == 0)
stop("wrong version for WELL RNG")
if(version == "b" && order %in% c(512, 21701) )
stop("this WELL RNG does not have a 'b' version")
nb <- ifelse(length(n)>1, length(n), n)
if(nb < 0) stop("invalid argumet 'n'")
if(nb == 0) return(numeric(0))
#implemented in src/randtoolbox.c
res <- .Call(CF_doWELL, nb, dim, order, temper, zeversion)
if(dim == 1)
as.vector(res)
else
as.matrix(res)
}
knuthTAOCP <- function(n, dim = 1)
{
if(is.array(n) || !is.numeric(n))
stop("invalid argument 'n'")
if(length(dim) >1)
stop("invalid argument 'dim'")
nb <- ifelse(length(n)>1, length(n), n)
if(nb < 0) stop("invalid argumet 'n'")
if(nb == 0) return(numeric(0))
#implemented in src/randtoolbox.c
res <- .Call(CF_doKnuthTAOCP, nb, dim)
if(dim == 1)
as.vector(res)
else
as.matrix(res)
}
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