FM / random

/usr/include/boost/random

Name	Size	Mode	Actions
detail/	-	0755	rm
additive_combine.hpp	8826	0644	edit dl rm
bernoulli_distribution.hpp	5608	0644	edit dl rm
beta_distribution.hpp	5900	0644	edit dl rm
binomial_distribution.hpp	12985	0644	edit dl rm
cauchy_distribution.hpp	6528	0644	edit dl rm
chi_squared_distribution.hpp	6322	0644	edit dl rm
discard_block.hpp	7991	0644	edit dl rm
discrete_distribution.hpp	21137	0644	edit dl rm
exponential_distribution.hpp	20895	0644	edit dl rm
extreme_value_distribution.hpp	5611	0644	edit dl rm
faure.hpp	11474	0644	edit dl rm
fisher_f_distribution.hpp	5924	0644	edit dl rm
gamma_distribution.hpp	9166	0644	edit dl rm
generate_canonical.hpp	2954	0644	edit dl rm
geometric_distribution.hpp	7339	0644	edit dl rm
hyperexponential_distribution.hpp	36980	0644	edit dl rm
independent_bits.hpp	9117	0644	edit dl rm
inversive_congruential.hpp	9550	0644	edit dl rm
lagged_fibonacci.hpp	18256	0644	edit dl rm
laplace_distribution.hpp	5743	0644	edit dl rm
linear_congruential.hpp	16214	0644	edit dl rm
linear_feedback_shift.hpp	7162	0644	edit dl rm
lognormal_distribution.hpp	8051	0644	edit dl rm
mersenne_twister.hpp	24094	0644	edit dl rm
negative_binomial_distribution.hpp	6911	0644	edit dl rm
niederreiter_base2.hpp	11736	0644	edit dl rm
non_central_chi_squared_distribution.hpp	7724	0644	edit dl rm
normal_distribution.hpp	17441	0644	edit dl rm
piecewise_constant_distribution.hpp	17186	0644	edit dl rm
piecewise_linear_distribution.hpp	18802	0644	edit dl rm
poisson_distribution.hpp	10145	0644	edit dl rm
random_device.hpp	5032	0644	edit dl rm
random_number_generator.hpp	1958	0644	edit dl rm
ranlux.hpp	3292	0644	edit dl rm
seed_seq.hpp	3792	0644	edit dl rm
shuffle_order.hpp	9181	0644	edit dl rm
shuffle_output.hpp	1352	0644	edit dl rm
sobol.hpp	7704	0644	edit dl rm
student_t_distribution.hpp	5633	0644	edit dl rm
subtract_with_carry.hpp	21590	0644	edit dl rm
taus88.hpp	1164	0644	edit dl rm
traits.hpp	4165	0644	edit dl rm
triangle_distribution.hpp	7033	0644	edit dl rm
uniform_01.hpp	7538	0644	edit dl rm
uniform_int.hpp	2909	0644	edit dl rm
uniform_int_distribution.hpp	16199	0644	edit dl rm
uniform_on_sphere.hpp	8812	0644	edit dl rm
uniform_real.hpp	2449	0644	edit dl rm
uniform_real_distribution.hpp	7726	0644	edit dl rm
uniform_smallint.hpp	12230	0644	edit dl rm
variate_generator.hpp	3708	0644	edit dl rm
weibull_distribution.hpp	5524	0644	edit dl rm
xor_combine.hpp	7049	0644	edit dl rm

Edit: /usr/include/boost/random/seed_seq.hpp (3792B)

/* boost random/seed_seq.hpp header file
 *
 * Copyright Steven Watanabe 2010
 * Distributed under the Boost Software License, Version 1.0. (See
 * accompanying file LICENSE_1_0.txt or copy at
 * http://www.boost.org/LICENSE_1_0.txt)
 *
 * See http://www.boost.org for most recent version including documentation.
 *
 * $Id$
 *
 */

#ifndef BOOST_RANDOM_SEED_SEQ_HPP
#define BOOST_RANDOM_SEED_SEQ_HPP

#include <boost/config.hpp>
#include <boost/cstdint.hpp>
#include <boost/range/begin.hpp>
#include <boost/range/end.hpp>
#include <cstddef>
#include <vector>
#include <algorithm>
#include <iterator>

#ifndef BOOST_NO_CXX11_HDR_INITIALIZER_LIST
#include <initializer_list>
#endif

namespace boost {
namespace random {

/**
 * The class @c seed_seq stores a sequence of 32-bit words
 * for seeding a \pseudo_random_number_generator.  These
 * words will be combined to fill the entire state of the
 * generator.
 */
class seed_seq {
public:
    typedef boost::uint_least32_t result_type;

/** Initializes a seed_seq to hold an empty sequence. */
    seed_seq() {}
#ifndef BOOST_NO_CXX11_HDR_INITIALIZER_LIST
    /** Initializes the sequence from an initializer_list. */
    template<class T>
    seed_seq(const std::initializer_list<T>& il) : v(il.begin(), il.end()) {}
#endif
    /** Initializes the sequence from an iterator range. */
    template<class Iter>
    seed_seq(Iter first, Iter last) : v(first, last) {}
    /** Initializes the sequence from Boost.Range range. */
    template<class Range>
    explicit seed_seq(const Range& range)
      : v(boost::begin(range), boost::end(range)) {}

/**
     * Fills a range with 32-bit values based on the stored sequence.
     *
     * Requires: Iter must be a Random Access Iterator whose value type
     * is an unsigned integral type at least 32 bits wide.
     */
    template<class Iter>
    void generate(Iter first, Iter last) const
    {
        typedef typename std::iterator_traits<Iter>::value_type value_type;
        std::fill(first, last, static_cast<value_type>(0x8b8b8b8bu));
        std::size_t s = v.size();
        std::size_t n = last - first;
        std::size_t t =
            (n >= 623) ? 11 :
            (n >=  68) ?  7 :
            (n >=  39) ?  5 :
            (n >=   7) ?  3 :
            (n - 1)/2;
        std::size_t p = (n - t) / 2;
        std::size_t q = p + t;
        std::size_t m = (std::max)(s+1, n);
        value_type mask = 0xffffffffu;
        for(std::size_t k = 0; k < m; ++k) {
            value_type r1 = static_cast<value_type>
                (*(first + k%n) ^ *(first + (k+p)%n) ^ *(first + (k+n-1)%n));
            r1 = r1 ^ (r1 >> 27);
            r1 = (r1 * 1664525u) & mask;
            value_type r2 = static_cast<value_type>(r1 +
                ((k == 0) ? s :
                 (k <= s) ? k % n + v[k - 1] :
                 (k % n)));
            *(first + (k+p)%n) = (*(first + (k+p)%n) + r1) & mask;
            *(first + (k+q)%n) = (*(first + (k+q)%n) + r2) & mask;
            *(first + k%n) = r2;
        }
        for(std::size_t k = m; k < m + n; ++k) {
            value_type r3 = static_cast<value_type>
                ((*(first + k%n) + *(first + (k+p)%n) + *(first + (k+n-1)%n))
                & mask);
            r3 = r3 ^ (r3 >> 27);
            r3 = (r3 * 1566083941u) & mask;
            value_type r4 = static_cast<value_type>(r3 - k%n);
            *(first + (k+p)%n) ^= r3;
            *(first + (k+q)%n) ^= r4;
            *(first + k%n) = r4;
        }
    }
    /** Returns the size of the sequence. */
    std::size_t size() const { return v.size(); }
    /** Writes the stored sequence to iter. */
    template<class Iter>
    void param(Iter out) { std::copy(v.begin(), v.end(), out); }
private:
    std::vector<result_type> v;
};

}
}

#endif

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