ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/random/linear_congruential.hpp b/include/ndnboost/random/linear_congruential.hpp
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+/* boost random/linear_congruential.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: linear_congruential.hpp 71018 2011-04-05 21:27:52Z steven_watanabe $
+ *
+ * Revision history
+ *  2001-02-18  moved to individual header files
+ */
+
+#ifndef NDNBOOST_RANDOM_LINEAR_CONGRUENTIAL_HPP
+#define NDNBOOST_RANDOM_LINEAR_CONGRUENTIAL_HPP
+
+#include <iostream>
+#include <stdexcept>
+#include <ndnboost/assert.hpp>
+#include <ndnboost/config.hpp>
+#include <ndnboost/cstdint.hpp>
+#include <ndnboost/limits.hpp>
+#include <ndnboost/static_assert.hpp>
+#include <ndnboost/integer/static_log2.hpp>
+#include <ndnboost/mpl/if.hpp>
+#include <ndnboost/type_traits/is_arithmetic.hpp>
+#include <ndnboost/random/detail/config.hpp>
+#include <ndnboost/random/detail/const_mod.hpp>
+#include <ndnboost/random/detail/seed.hpp>
+#include <ndnboost/random/detail/seed_impl.hpp>
+#include <ndnboost/detail/workaround.hpp>
+
+#include <ndnboost/random/detail/disable_warnings.hpp>
+
+namespace ndnboost {
+namespace random {
+
+/**
+ * Instantiations of class template linear_congruential_engine model a
+ * \pseudo_random_number_generator. Linear congruential pseudo-random
+ * number generators are described in:
+ *
+ *  @blockquote
+ *  "Mathematical methods in large-scale computing units", D. H. Lehmer,
+ *  Proc. 2nd Symposium on Large-Scale Digital Calculating Machines,
+ *  Harvard University Press, 1951, pp. 141-146
+ *  @endblockquote
+ *
+ * Let x(n) denote the sequence of numbers returned by some pseudo-random
+ * number generator. Then for the linear congruential generator,
+ * x(n+1) := (a * x(n) + c) mod m. Parameters for the generator are
+ * x(0), a, c, m. The template parameter IntType shall denote an integral
+ * type. It must be large enough to hold values a, c, and m. The template
+ * parameters a and c must be smaller than m.
+ *
+ * Note: The quality of the generator crucially depends on the choice of
+ * the parameters. User code should use one of the sensibly parameterized
+ * generators such as minstd_rand instead.
+ */
+template<class IntType, IntType a, IntType c, IntType m>
+class linear_congruential_engine
+{
+public:
+    typedef IntType result_type;
+
+    // Required for old Boost.Random concept
+    NDNBOOST_STATIC_CONSTANT(bool, has_fixed_range = false);
+
+    NDNBOOST_STATIC_CONSTANT(IntType, multiplier = a);
+    NDNBOOST_STATIC_CONSTANT(IntType, increment = c);
+    NDNBOOST_STATIC_CONSTANT(IntType, modulus = m);
+    NDNBOOST_STATIC_CONSTANT(IntType, default_seed = 1);
+    
+    NDNBOOST_STATIC_ASSERT(std::numeric_limits<IntType>::is_integer);
+    NDNBOOST_STATIC_ASSERT(m == 0 || a < m);
+    NDNBOOST_STATIC_ASSERT(m == 0 || c < m);
+    
+    /**
+     * Constructs a @c linear_congruential_engine, using the default seed
+     */
+    linear_congruential_engine() { seed(); }
+
+    /**
+     * Constructs a @c linear_congruential_engine, seeding it with @c x0.
+     */
+    NDNBOOST_RANDOM_DETAIL_ARITHMETIC_CONSTRUCTOR(linear_congruential_engine,
+                                               IntType, x0)
+    { seed(x0); }
+    
+    /**
+     * Constructs a @c linear_congruential_engine, seeding it with values
+     * produced by a call to @c seq.generate().
+     */
+    NDNBOOST_RANDOM_DETAIL_SEED_SEQ_CONSTRUCTOR(linear_congruential_engine,
+                                             SeedSeq, seq)
+    { seed(seq); }
+
+    /**
+     * Constructs a @c linear_congruential_engine  and seeds it
+     * with values taken from the itrator range [first, last)
+     * and adjusts first to point to the element after the last one
+     * used.  If there are not enough elements, throws @c std::invalid_argument.
+     *
+     * first and last must be input iterators.
+     */
+    template<class It>
+    linear_congruential_engine(It& first, It last)
+    {
+        seed(first, last);
+    }
+
+    // compiler-generated copy constructor and assignment operator are fine
+
+    /**
+     * Calls seed(default_seed)
+     */
+    void seed() { seed(default_seed); }
+
+    /**
+     * If c mod m is zero and x0 mod m is zero, changes the current value of
+     * the generator to 1. Otherwise, changes it to x0 mod m. If c is zero,
+     * distinct seeds in the range [1,m) will leave the generator in distinct
+     * states. If c is not zero, the range is [0,m).
+     */
+    NDNBOOST_RANDOM_DETAIL_ARITHMETIC_SEED(linear_congruential_engine, IntType, x0)
+    {
+        // wrap _x if it doesn't fit in the destination
+        if(modulus == 0) {
+            _x = x0;
+        } else {
+            _x = x0 % modulus;
+        }
+        // handle negative seeds
+        if(_x <= 0 && _x != 0) {
+            _x += modulus;
+        }
+        // adjust to the correct range
+        if(increment == 0 && _x == 0) {
+            _x = 1;
+        }
+        NDNBOOST_ASSERT(_x >= (min)());
+        NDNBOOST_ASSERT(_x <= (max)());
+    }
+
+    /**
+     * Seeds a @c linear_congruential_engine using values from a SeedSeq.
+     */
+    NDNBOOST_RANDOM_DETAIL_SEED_SEQ_SEED(linear_congruential_engine, SeedSeq, seq)
+    { seed(detail::seed_one_int<IntType, m>(seq)); }
+
+    /**
+     * seeds a @c linear_congruential_engine with values taken
+     * from the itrator range [first, last) and adjusts @c first to
+     * point to the element after the last one used.  If there are
+     * not enough elements, throws @c std::invalid_argument.
+     *
+     * @c first and @c last must be input iterators.
+     */
+    template<class It>
+    void seed(It& first, It last)
+    { seed(detail::get_one_int<IntType, m>(first, last)); }
+
+    /**
+     * Returns the smallest value that the @c linear_congruential_engine
+     * can produce.
+     */
+    static result_type min NDNBOOST_PREVENT_MACRO_SUBSTITUTION ()
+    { return c == 0 ? 1 : 0; }
+    /**
+     * Returns the largest value that the @c linear_congruential_engine
+     * can produce.
+     */
+    static result_type max NDNBOOST_PREVENT_MACRO_SUBSTITUTION ()
+    { return modulus-1; }
+
+    /** Returns the next value of the @c linear_congruential_engine. */
+    IntType operator()()
+    {
+        _x = const_mod<IntType, m>::mult_add(a, _x, c);
+        return _x;
+    }
+  
+    /** Fills a range with random values */
+    template<class Iter>
+    void generate(Iter first, Iter last)
+    { detail::generate_from_int(*this, first, last); }
+
+    /** Advances the state of the generator by @c z. */
+    void discard(ndnboost::uintmax_t z)
+    {
+        typedef const_mod<IntType, m> mod_type;
+        IntType b_inv = mod_type::invert(a-1);
+        IntType b_gcd = mod_type::mult(a-1, b_inv);
+        if(b_gcd == 1) {
+            IntType a_z = mod_type::pow(a, z);
+            _x = mod_type::mult_add(a_z, _x, 
+                mod_type::mult(mod_type::mult(c, b_inv), a_z - 1));
+        } else {
+            // compute (a^z - 1)*c % (b_gcd * m) / (b / b_gcd) * inv(b / b_gcd)
+            // we're storing the intermediate result / b_gcd
+            IntType a_zm1_over_gcd = 0;
+            IntType a_km1_over_gcd = (a - 1) / b_gcd;
+            ndnboost::uintmax_t exponent = z;
+            while(exponent != 0) {
+                if(exponent % 2 == 1) {
+                    a_zm1_over_gcd =
+                        mod_type::mult_add(
+                            b_gcd,
+                            mod_type::mult(a_zm1_over_gcd, a_km1_over_gcd),
+                            mod_type::add(a_zm1_over_gcd, a_km1_over_gcd));
+                }
+                a_km1_over_gcd = mod_type::mult_add(
+                    b_gcd,
+                    mod_type::mult(a_km1_over_gcd, a_km1_over_gcd),
+                    mod_type::add(a_km1_over_gcd, a_km1_over_gcd));
+                exponent /= 2;
+            }
+            
+            IntType a_z = mod_type::mult_add(b_gcd, a_zm1_over_gcd, 1);
+            IntType num = mod_type::mult(c, a_zm1_over_gcd);
+            b_inv = mod_type::invert((a-1)/b_gcd);
+            _x = mod_type::mult_add(a_z, _x, mod_type::mult(b_inv, num));
+        }
+    }
+
+    friend bool operator==(const linear_congruential_engine& x,
+                           const linear_congruential_engine& y)
+    { return x._x == y._x; }
+    friend bool operator!=(const linear_congruential_engine& x,
+                           const linear_congruential_engine& y)
+    { return !(x == y); }
+    
+#if !defined(NDNBOOST_RANDOM_NO_STREAM_OPERATORS)
+    /** Writes a @c linear_congruential_engine to a @c std::ostream. */
+    template<class CharT, class Traits>
+    friend std::basic_ostream<CharT,Traits>&
+    operator<<(std::basic_ostream<CharT,Traits>& os,
+               const linear_congruential_engine& lcg)
+    {
+        return os << lcg._x;
+    }
+
+    /** Reads a @c linear_congruential_engine from a @c std::istream. */
+    template<class CharT, class Traits>
+    friend std::basic_istream<CharT,Traits>&
+    operator>>(std::basic_istream<CharT,Traits>& is,
+               linear_congruential_engine& lcg)
+    {
+        lcg.read(is);
+        return is;
+    }
+#endif
+
+private:
+
+    /// \cond show_private
+
+    template<class CharT, class Traits>
+    void read(std::basic_istream<CharT, Traits>& is) {
+        IntType x;
+        if(is >> x) {
+            if(x >= (min)() && x <= (max)()) {
+                _x = x;
+            } else {
+                is.setstate(std::ios_base::failbit);
+            }
+        }
+    }
+
+    /// \endcond
+
+    IntType _x;
+};
+
+#ifndef NDNBOOST_NO_INCLASS_MEMBER_INITIALIZATION
+//  A definition is required even for integral static constants
+template<class IntType, IntType a, IntType c, IntType m>
+const bool linear_congruential_engine<IntType, a, c, m>::has_fixed_range;
+template<class IntType, IntType a, IntType c, IntType m>
+const IntType linear_congruential_engine<IntType,a,c,m>::multiplier;
+template<class IntType, IntType a, IntType c, IntType m>
+const IntType linear_congruential_engine<IntType,a,c,m>::increment;
+template<class IntType, IntType a, IntType c, IntType m>
+const IntType linear_congruential_engine<IntType,a,c,m>::modulus;
+template<class IntType, IntType a, IntType c, IntType m>
+const IntType linear_congruential_engine<IntType,a,c,m>::default_seed;
+#endif
+
+/// \cond show_deprecated
+
+// provided for backwards compatibility
+template<class IntType, IntType a, IntType c, IntType m, IntType val = 0>
+class linear_congruential : public linear_congruential_engine<IntType, a, c, m>
+{
+    typedef linear_congruential_engine<IntType, a, c, m> base_type;
+public:
+    linear_congruential(IntType x0 = 1) : base_type(x0) {}
+    template<class It>
+    linear_congruential(It& first, It last) : base_type(first, last) {}
+};
+
+/// \endcond
+
+/**
+ * The specialization \minstd_rand0 was originally suggested in
+ *
+ *  @blockquote
+ *  A pseudo-random number generator for the System/360, P.A. Lewis,
+ *  A.S. Goodman, J.M. Miller, IBM Systems Journal, Vol. 8, No. 2,
+ *  1969, pp. 136-146
+ *  @endblockquote
+ *
+ * It is examined more closely together with \minstd_rand in
+ *
+ *  @blockquote
+ *  "Random Number Generators: Good ones are hard to find",
+ *  Stephen K. Park and Keith W. Miller, Communications of
+ *  the ACM, Vol. 31, No. 10, October 1988, pp. 1192-1201 
+ *  @endblockquote
+ */
+typedef linear_congruential_engine<uint32_t, 16807, 0, 2147483647> minstd_rand0;
+
+/** The specialization \minstd_rand was suggested in
+ *
+ *  @blockquote
+ *  "Random Number Generators: Good ones are hard to find",
+ *  Stephen K. Park and Keith W. Miller, Communications of
+ *  the ACM, Vol. 31, No. 10, October 1988, pp. 1192-1201
+ *  @endblockquote
+ */
+typedef linear_congruential_engine<uint32_t, 48271, 0, 2147483647> minstd_rand;
+
+
+#if !defined(NDNBOOST_NO_INT64_T) && !defined(NDNBOOST_NO_INTEGRAL_INT64_T)
+/**
+ * Class @c rand48 models a \pseudo_random_number_generator. It uses
+ * the linear congruential algorithm with the parameters a = 0x5DEECE66D,
+ * c = 0xB, m = 2**48. It delivers identical results to the @c lrand48()
+ * function available on some systems (assuming lcong48 has not been called).
+ *
+ * It is only available on systems where @c uint64_t is provided as an
+ * integral type, so that for example static in-class constants and/or
+ * enum definitions with large @c uint64_t numbers work.
+ */
+class rand48 
+{
+public:
+    typedef ndnboost::uint32_t result_type;
+
+    NDNBOOST_STATIC_CONSTANT(bool, has_fixed_range = false);
+    /**
+     * Returns the smallest value that the generator can produce
+     */
+    static uint32_t min NDNBOOST_PREVENT_MACRO_SUBSTITUTION () { return 0; }
+    /**
+     * Returns the largest value that the generator can produce
+     */
+    static uint32_t max NDNBOOST_PREVENT_MACRO_SUBSTITUTION ()
+    { return 0x7FFFFFFF; }
+  
+    /** Seeds the generator with the default seed. */
+    rand48() : lcf(cnv(static_cast<uint32_t>(1))) {}
+    /**
+     * Constructs a \rand48 generator with x(0) := (x0 << 16) | 0x330e.
+     */
+    NDNBOOST_RANDOM_DETAIL_ARITHMETIC_CONSTRUCTOR(rand48, result_type, x0)
+    { seed(x0); }
+    /**
+     * Seeds the generator with values produced by @c seq.generate().
+     */
+    NDNBOOST_RANDOM_DETAIL_SEED_SEQ_CONSTRUCTOR(rand48, SeedSeq, seq)
+    { seed(seq); }
+    /**
+     * Seeds the generator using values from an iterator range,
+     * and updates first to point one past the last value consumed.
+     */
+    template<class It> rand48(It& first, It last) : lcf(first, last) { }
+
+    // compiler-generated copy ctor and assignment operator are fine
+
+    /** Seeds the generator with the default seed. */
+    void seed() { seed(static_cast<uint32_t>(1)); }
+    /**
+     * Changes the current value x(n) of the generator to (x0 << 16) | 0x330e.
+     */
+    NDNBOOST_RANDOM_DETAIL_ARITHMETIC_SEED(rand48, result_type, x0)
+    { lcf.seed(cnv(x0)); }
+    /**
+     * Seeds the generator using values from an iterator range,
+     * and updates first to point one past the last value consumed.
+     */
+    template<class It> void seed(It& first, It last) { lcf.seed(first,last); }
+    /**
+     * Seeds the generator with values produced by @c seq.generate().
+     */
+    NDNBOOST_RANDOM_DETAIL_SEED_SEQ_SEED(rand48, SeedSeq, seq)
+    { lcf.seed(seq); }
+
+    /**  Returns the next value of the generator. */
+    uint32_t operator()() { return static_cast<uint32_t>(lcf() >> 17); }
+    
+    /** Advances the state of the generator by @c z. */
+    void discard(ndnboost::uintmax_t z) { lcf.discard(z); }
+  
+    /** Fills a range with random values */
+    template<class Iter>
+    void generate(Iter first, Iter last)
+    {
+        for(; first != last; ++first) {
+            *first = (*this)();
+        }
+    }
+
+#ifndef NDNBOOST_RANDOM_NO_STREAM_OPERATORS
+    /**  Writes a @c rand48 to a @c std::ostream. */
+    template<class CharT,class Traits>
+    friend std::basic_ostream<CharT,Traits>&
+    operator<<(std::basic_ostream<CharT,Traits>& os, const rand48& r)
+    { os << r.lcf; return os; }
+
+    /** Reads a @c rand48 from a @c std::istream. */
+    template<class CharT,class Traits>
+    friend std::basic_istream<CharT,Traits>&
+    operator>>(std::basic_istream<CharT,Traits>& is, rand48& r)
+    { is >> r.lcf; return is; }
+#endif
+
+    /**
+     * Returns true if the two generators will produce identical
+     * sequences of values.
+     */
+    friend bool operator==(const rand48& x, const rand48& y)
+    { return x.lcf == y.lcf; }
+    /**
+     * Returns true if the two generators will produce different
+     * sequences of values.
+     */
+    friend bool operator!=(const rand48& x, const rand48& y)
+    { return !(x == y); }
+private:
+    /// \cond show_private
+    typedef random::linear_congruential_engine<uint64_t,
+        // xxxxULL is not portable
+        uint64_t(0xDEECE66DUL) | (uint64_t(0x5) << 32),
+        0xB, uint64_t(1)<<48> lcf_t;
+    lcf_t lcf;
+
+    static ndnboost::uint64_t cnv(ndnboost::uint32_t x)
+    { return (static_cast<uint64_t>(x) << 16) | 0x330e; }
+    /// \endcond
+};
+#endif /* !NDNBOOST_NO_INT64_T && !NDNBOOST_NO_INTEGRAL_INT64_T */
+
+} // namespace random
+
+using random::minstd_rand0;
+using random::minstd_rand;
+using random::rand48;
+
+} // namespace ndnboost
+
+#include <ndnboost/random/detail/enable_warnings.hpp>
+
+#endif // NDNBOOST_RANDOM_LINEAR_CONGRUENTIAL_HPP