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#  File src/library/base/R/vector.R
#  Part of the R package, https://www.R-project.org
#
#  Copyright (C) 1995-2013 The R Core Team
#
#  This program 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 2 of the License, or
#  (at your option) any later version.
#
#  This program 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.
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#  A copy of the GNU General Public License is available at
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vector <- function(mode = "logical", length = 0L) .Internal(vector(mode, length))
logical <- function(length = 0L) .Internal(vector("logical", length))
character <- function(length = 0L) .Internal(vector("character", length))
integer <- function(length = 0L) .Internal(vector("integer", length))
numeric <- double <-
    function(length = 0L) .Internal(vector("double", length))

complex <- function(length.out = 0L,
            real = numeric(), imaginary = numeric(),
            modulus = 1, argument = 0) {
    if(missing(modulus) && missing(argument)) {
    ## assume 'real' and 'imaginary'
    .Internal(complex(length.out, real, imaginary))
    } else {
    n <- max(length.out, length(argument), length(modulus))
    rep_len(modulus, n) * exp(1i * rep_len(argument, n))
    }
}

single <- function(length = 0L)
    structure(vector("double", length), Csingle=TRUE)