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PATH: opt / cpanel / ea-ruby27 / src / passenger-release-6.1.2 / src / cxx_supportlib / vendor-modified / boost / random

/* boost random/random_number_generator.hpp header file
 *
 * Copyright Jens Maurer 2000-2001
 * 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.
 *
 * $Id$
 *
 * Revision history
 *  2001-02-18  moved to individual header files
 */

#ifndef BOOST_RANDOM_RANDOM_NUMBER_GENERATOR_HPP
#define BOOST_RANDOM_RANDOM_NUMBER_GENERATOR_HPP

#include <boost/assert.hpp>
#include <boost/random/uniform_int_distribution.hpp>

#include <boost/random/detail/disable_warnings.hpp>

namespace boost {
namespace random {

/**
 * Instantiations of class template random_number_generator model a
 * RandomNumberGenerator (std:25.2.11 [lib.alg.random.shuffle]). On
 * each invocation, it returns a uniformly distributed integer in
 * the range [0..n).
 *
 * The template parameter IntType shall denote some integer-like value type.
 */
template<class URNG, class IntType = long>
class random_number_generator
{
public:
    typedef URNG base_type;
    typedef IntType argument_type;
    typedef IntType result_type;
    /**
     * Constructs a random_number_generator functor with the given
     * \uniform_random_number_generator as the underlying source of
     * random numbers.
     */
    random_number_generator(base_type& rng) : _rng(rng) {}

// compiler-generated copy ctor is fine
    // assignment is disallowed because there is a reference member

/**
     * Returns a value in the range [0, n)
     */
    result_type operator()(argument_type n)
    {
        BOOST_ASSERT(n > 0);
        return uniform_int_distribution<IntType>(0, n-1)(_rng);
    }

private:
    base_type& _rng;
};

} // namespace random

using random::random_number_generator;

} // namespace boost

#include <boost/random/detail/enable_warnings.hpp>

#endif // BOOST_RANDOM_RANDOM_NUMBER_GENERATOR_HPP

[-] uniform_smallint.hpp [edit]
[-] weibull_distribution.hpp [edit]
[-] xor_combine.hpp [edit]
[-] generate_canonical.hpp [edit]
[-] traits.hpp [edit]
[-] laplace_distribution.hpp [edit]
[-] hyperexponential_distribution.hpp [edit]
[-] student_t_distribution.hpp [edit]
[-] lagged_fibonacci.hpp [edit]
[-] uniform_int.hpp [edit]
[-] binomial_distribution.hpp [edit]
[-] uniform_on_sphere.hpp [edit]
[-] bernoulli_distribution.hpp [edit]
[-] triangle_distribution.hpp [edit]
[-] beta_distribution.hpp [edit]
[-] subtract_with_carry.hpp [edit]
[-] uniform_01.hpp [edit]
[-] discrete_distribution.hpp [edit]
[-] variate_generator.hpp [edit]
[-] taus88.hpp [edit]
[-] generalized_inverse_gaussian_distribution.hpp [edit]
[-] random_number_generator.hpp [edit]
[-] exponential_distribution.hpp [edit]
[+] ..
[-] inverse_gaussian_distribution.hpp [edit]
[-] xoshiro.hpp [edit]
[-] inversive_congruential.hpp [edit]
[-] cauchy_distribution.hpp [edit]
[-] faure.hpp [edit]
[-] chi_squared_distribution.hpp [edit]
[-] linear_congruential.hpp [edit]
[-] mersenne_twister.hpp [edit]
[-] lognormal_distribution.hpp [edit]
[-] uniform_int_distribution.hpp [edit]
[-] geometric_distribution.hpp [edit]
[-] piecewise_linear_distribution.hpp [edit]
[-] independent_bits.hpp [edit]
[-] extreme_value_distribution.hpp [edit]
[-] splitmix64.hpp [edit]
[-] gamma_distribution.hpp [edit]
[-] niederreiter_base2.hpp [edit]
[-] poisson_distribution.hpp [edit]
[-] mixmax.hpp [edit]
[-] uniform_real_distribution.hpp [edit]
[-] discard_block.hpp [edit]
[-] seed_seq.hpp [edit]
[-] normal_distribution.hpp [edit]
[-] fisher_f_distribution.hpp [edit]
[-] negative_binomial_distribution.hpp [edit]
[-] shuffle_output.hpp [edit]
[-] linear_feedback_shift.hpp [edit]
[-] additive_combine.hpp [edit]
[+] detail
[-] shuffle_order.hpp [edit]
[-] random_device.hpp [edit]
[-] sobol.hpp [edit]
[-] ranlux.hpp [edit]
[-] uniform_real.hpp [edit]
[-] non_central_chi_squared_distribution.hpp [edit]
[-] piecewise_constant_distribution.hpp [edit]