stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

This commit is contained in:
2026-02-24 18:38:47 +00:00
parent da8c28aaeb
commit 65cb2619a7
13106 changed files with 2484322 additions and 1804 deletions
@@ -0,0 +1,40 @@
/* boost random auto_link.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)
*
* $Id$
*/
#ifndef BOOST_RANDOM_DETAIL_AUTO_LINK_HPP
#define BOOST_RANDOM_DETAIL_AUTO_LINK_HPP
#include <boost/config.hpp>
#if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_RANDOM_DYN_LINK)
#if defined(BOOST_RANDOM_SOURCE)
#define BOOST_RANDOM_DECL BOOST_SYMBOL_EXPORT
#else
#define BOOST_RANDOM_DECL BOOST_SYMBOL_IMPORT
#endif
#endif
#ifndef BOOST_RANDOM_DECL
#define BOOST_RANDOM_DECL
#endif
#if !defined(BOOST_RANDOM_NO_LIB) && !defined(BOOST_ALL_NO_LIB) && !defined(BOOST_RANDOM_SOURCE)
#define BOOST_LIB_NAME boost_random
#if defined(BOOST_RANDOM_DYN_LINK) || defined(BOOST_ALL_DYN_LINK)
#define BOOST_DYN_LINK
#endif
#include <boost/config/auto_link.hpp>
#endif
#endif
@@ -0,0 +1,18 @@
/* boost random/detail/config.hpp header file
*
* Copyright Steven Watanabe 2009
* 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.
*
* $Id$
*/
#include <boost/config.hpp>
#if (defined(BOOST_NO_OPERATORS_IN_NAMESPACE) || defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS)) \
&& !defined(BOOST_MSVC)
#define BOOST_RANDOM_NO_STREAM_OPERATORS
#endif
@@ -0,0 +1,216 @@
/* boost random/detail/const_mod.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_CONST_MOD_HPP
#define BOOST_RANDOM_CONST_MOD_HPP
#include <boost/assert.hpp>
#include <boost/static_assert.hpp>
#include <boost/integer_traits.hpp>
#include <boost/type_traits/make_unsigned.hpp>
#include <boost/random/detail/large_arithmetic.hpp>
#include <boost/random/detail/disable_warnings.hpp>
namespace boost {
namespace random {
template<class IntType, IntType m>
class const_mod
{
public:
static IntType apply(IntType x)
{
if(((unsigned_m() - 1) & unsigned_m()) == 0)
return (unsigned_type(x)) & (unsigned_m() - 1);
else {
IntType suppress_warnings = (m == 0);
BOOST_ASSERT(suppress_warnings == 0);
return x % (m + suppress_warnings);
}
}
static IntType add(IntType x, IntType c)
{
if(((unsigned_m() - 1) & unsigned_m()) == 0)
return (unsigned_type(x) + unsigned_type(c)) & (unsigned_m() - 1);
else if(c == 0)
return x;
else if(x < m - c)
return x + c;
else
return x - (m - c);
}
static IntType mult(IntType a, IntType x)
{
if(((unsigned_m() - 1) & unsigned_m()) == 0)
return unsigned_type(a) * unsigned_type(x) & (unsigned_m() - 1);
else if(a == 0)
return 0;
else if(a == 1)
return x;
else if(m <= traits::const_max/a) // i.e. a*m <= max
return mult_small(a, x);
else if(traits::is_signed && (m%a < m/a))
return mult_schrage(a, x);
else
return mult_general(a, x);
}
static IntType mult_add(IntType a, IntType x, IntType c)
{
if(((unsigned_m() - 1) & unsigned_m()) == 0)
return (unsigned_type(a) * unsigned_type(x) + unsigned_type(c)) & (unsigned_m() - 1);
else if(a == 0)
return c;
else if(m <= (traits::const_max-c)/a) { // i.e. a*m+c <= max
IntType suppress_warnings = (m == 0);
BOOST_ASSERT(suppress_warnings == 0);
return (a*x+c) % (m + suppress_warnings);
} else
return add(mult(a, x), c);
}
static IntType pow(IntType a, boost::uintmax_t exponent)
{
IntType result = 1;
while(exponent != 0) {
if(exponent % 2 == 1) {
result = mult(result, a);
}
a = mult(a, a);
exponent /= 2;
}
return result;
}
static IntType invert(IntType x)
{ return x == 0 ? 0 : (m == 0? invert_euclidian0(x) : invert_euclidian(x)); }
private:
typedef integer_traits<IntType> traits;
typedef typename make_unsigned<IntType>::type unsigned_type;
const_mod(); // don't instantiate
static IntType mult_small(IntType a, IntType x)
{
IntType suppress_warnings = (m == 0);
BOOST_ASSERT(suppress_warnings == 0);
return a*x % (m + suppress_warnings);
}
static IntType mult_schrage(IntType a, IntType value)
{
const IntType q = m / a;
const IntType r = m % a;
BOOST_ASSERT(r < q); // check that overflow cannot happen
return sub(a*(value%q), r*(value/q));
}
static IntType mult_general(IntType a, IntType b)
{
IntType suppress_warnings = (m == 0);
BOOST_ASSERT(suppress_warnings == 0);
IntType modulus = m + suppress_warnings;
BOOST_ASSERT(modulus == m);
if(::boost::uintmax_t(modulus) <=
(::std::numeric_limits< ::boost::uintmax_t>::max)() / modulus)
{
return static_cast<IntType>(boost::uintmax_t(a) * b % modulus);
} else {
return static_cast<IntType>(detail::mulmod(a, b, modulus));
}
}
static IntType sub(IntType a, IntType b)
{
if(a < b)
return m - (b - a);
else
return a - b;
}
static unsigned_type unsigned_m()
{
if(m == 0) {
return unsigned_type((std::numeric_limits<IntType>::max)()) + 1;
} else {
return unsigned_type(m);
}
}
// invert c in the finite field (mod m) (m must be prime)
static IntType invert_euclidian(IntType c)
{
// we are interested in the gcd factor for c, because this is our inverse
BOOST_ASSERT(c > 0);
IntType l1 = 0;
IntType l2 = 1;
IntType n = c;
IntType p = m;
for(;;) {
IntType q = p / n;
l1 += q * l2;
p -= q * n;
if(p == 0)
return l2;
IntType q2 = n / p;
l2 += q2 * l1;
n -= q2 * p;
if(n == 0)
return m - l1;
}
}
// invert c in the finite field (mod m) (c must be relatively prime to m)
static IntType invert_euclidian0(IntType c)
{
// we are interested in the gcd factor for c, because this is our inverse
BOOST_ASSERT(c > 0);
if(c == 1) return 1;
IntType l1 = 0;
IntType l2 = 1;
IntType n = c;
IntType p = m;
IntType max = (std::numeric_limits<IntType>::max)();
IntType q = max / n;
BOOST_ASSERT(max % n != n - 1 && "c must be relatively prime to m.");
l1 += q * l2;
p = max - q * n + 1;
for(;;) {
if(p == 0)
return l2;
IntType q2 = n / p;
l2 += q2 * l1;
n -= q2 * p;
if(n == 0)
return m - l1;
q = p / n;
l1 += q * l2;
p -= q * n;
}
}
};
} // namespace random
} // namespace boost
#include <boost/random/detail/enable_warnings.hpp>
#endif // BOOST_RANDOM_CONST_MOD_HPP
@@ -0,0 +1,29 @@
/* boost random/detail/disable_warnings.hpp header file
*
* Copyright Steven Watanabe 2009
* 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.
*
* $Id$
*
*/
// No #include guard. This header is intended to be included multiple times.
#include <boost/config.hpp>
#ifdef BOOST_MSVC
#pragma warning(push)
#pragma warning(disable:4512)
#pragma warning(disable:4127)
#pragma warning(disable:4724)
#pragma warning(disable:4800) // 'int' : forcing value to bool 'true' or 'false' (performance warning)
#endif
#if defined(BOOST_GCC) && BOOST_GCC >= 40600
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wlogical-op"
#endif
@@ -0,0 +1,22 @@
/* boost random/detail/enable_warnings.hpp header file
*
* Copyright Steven Watanabe 2009
* 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.
*
* $Id$
*
*/
// No #include guard. This header is intended to be included multiple times.
#ifdef BOOST_MSVC
#pragma warning(pop)
#endif
#if defined(BOOST_GCC) && BOOST_GCC >= 40600
#pragma GCC diagnostic pop
#endif
@@ -0,0 +1,36 @@
/* boost random/detail/generator_bits.hpp header file
*
* Copyright Steven Watanabe 2011
* 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_DETAIL_GENERATOR_BITS_HPP
#define BOOST_RANDOM_DETAIL_GENERATOR_BITS_HPP
#include <boost/limits.hpp>
namespace boost {
namespace random {
namespace detail {
// This is a temporary measure that retains backwards
// compatibility.
template<class URNG>
struct generator_bits {
static std::size_t value() {
return std::numeric_limits<typename URNG::result_type>::digits;
}
};
} // namespace detail
} // namespace random
} // namespace boost
#endif // BOOST_RANDOM_DETAIL_GENERATOR_BITS_HPP
@@ -0,0 +1,40 @@
/* boost random/mersenne_twister.hpp header file
*
* Copyright Jens Maurer 2000-2001
* 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_DETAIL_GENERATOR_SEED_SEQ_HPP_INCLUDED
#define BOOST_RANDOM_DETAIL_GENERATOR_SEED_SEQ_HPP_INCLUDED
namespace boost {
namespace random {
namespace detail {
template<class Generator>
class generator_seed_seq {
public:
generator_seed_seq(Generator& g) : gen(&g) {}
template<class It>
void generate(It first, It last) {
for(; first != last; ++first) {
*first = (*gen)();
}
}
private:
Generator* gen;
};
}
}
}
#endif
@@ -0,0 +1,121 @@
/* boost random/detail/int_float_pair.hpp header file
*
* Copyright Jens Maurer 2000-2001
* Copyright Steven Watanabe 2010-2011
* 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_DETAIL_INT_FLOAT_PAIR_HPP
#define BOOST_RANDOM_DETAIL_INT_FLOAT_PAIR_HPP
#include <utility>
#include <boost/integer.hpp>
#include <boost/integer/integer_mask.hpp>
#include <boost/type_traits/make_unsigned.hpp>
#include <boost/type_traits/is_integral.hpp>
#include <boost/random/uniform_01.hpp>
#include <boost/random/uniform_int_distribution.hpp>
#include <boost/random/detail/signed_unsigned_tools.hpp>
#include <boost/random/detail/integer_log2.hpp>
#include <boost/mpl/bool.hpp>
namespace boost {
namespace random {
namespace detail {
template<class Engine>
inline typename boost::make_unsigned<typename Engine::result_type>::type
generate_one_digit(Engine& eng, std::size_t bits)
{
typedef typename Engine::result_type base_result;
typedef typename boost::make_unsigned<base_result>::type base_unsigned;
base_unsigned range =
detail::subtract<base_result>()((eng.max)(), (eng.min)());
base_unsigned y0_mask = (base_unsigned(2) << (bits - 1)) - 1;
base_unsigned y0 = (range + 1) & ~y0_mask;
base_unsigned u;
do {
u = detail::subtract<base_result>()(eng(), (eng.min)());
} while(y0 != 0 && u > base_unsigned(y0 - 1));
return u & y0_mask;
}
template<class RealType, std::size_t w, class Engine>
std::pair<RealType, int> generate_int_float_pair(Engine& eng, boost::mpl::true_)
{
typedef typename Engine::result_type base_result;
typedef typename boost::make_unsigned<base_result>::type base_unsigned;
base_unsigned range =
detail::subtract<base_result>()((eng.max)(), (eng.min)());
std::size_t m =
(range == (std::numeric_limits<base_unsigned>::max)()) ?
std::numeric_limits<base_unsigned>::digits :
detail::integer_log2(range + 1);
int bucket = 0;
// process as many full digits as possible into the int part
for(std::size_t i = 0; i < w/m; ++i) {
base_unsigned u = generate_one_digit(eng, m);
bucket = (bucket << m) | u;
}
RealType r;
const std::size_t digits = std::numeric_limits<RealType>::digits;
{
base_unsigned u = generate_one_digit(eng, m);
base_unsigned mask = (base_unsigned(1) << (w%m)) - 1;
bucket = (bucket << (w%m)) | (mask & u);
const RealType mult = RealType(1)/RealType(base_unsigned(1) << (m - w%m));
// zero out unused bits
if (m - w%m > digits) {
u &= ~(base_unsigned(1) << (m - digits));
}
r = RealType(u >> (w%m)) * mult;
}
for(std::size_t i = m - w%m; i + m < digits; ++i) {
base_unsigned u = generate_one_digit(eng, m);
r += u;
r *= RealType(0.5)/RealType(base_unsigned(1) << (m - 1));
}
if (m - w%m < digits)
{
const std::size_t remaining = (digits - m + w%m) % m;
base_unsigned u = generate_one_digit(eng, m);
r += u & ((base_unsigned(2) << (remaining - 1)) - 1);
const RealType mult = RealType(0.5)/RealType(base_unsigned(1) << (remaining - 1));
r *= mult;
}
return std::make_pair(r, bucket);
}
template<class RealType, std::size_t w, class Engine>
inline std::pair<RealType, int> generate_int_float_pair(Engine& eng, boost::mpl::false_)
{
int bucket = uniform_int_distribution<>(0, (1 << w) - 1)(eng);
RealType r = uniform_01<RealType>()(eng);
return std::make_pair(r, bucket);
}
template<class RealType, std::size_t w, class Engine>
inline std::pair<RealType, int> generate_int_float_pair(Engine& eng)
{
typedef typename Engine::result_type base_result;
return generate_int_float_pair<RealType, w>(eng,
boost::is_integral<base_result>());
}
} // namespace detail
} // namespace random
} // namespace boost
#endif // BOOST_RANDOM_DETAIL_INT_FLOAT_PAIR_HPP
@@ -0,0 +1,84 @@
/* boost random/detail/integer_log2.hpp header file
*
* Copyright Steven Watanabe 2011
* 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_DETAIL_INTEGER_LOG2_HPP
#define BOOST_RANDOM_DETAIL_INTEGER_LOG2_HPP
#include <boost/config.hpp>
#include <boost/limits.hpp>
#include <boost/pending/integer_log2.hpp>
namespace boost {
namespace random {
namespace detail {
#if !defined(BOOST_NO_CXX11_CONSTEXPR)
#define BOOST_RANDOM_DETAIL_CONSTEXPR constexpr
#elif defined(BOOST_MSVC)
#define BOOST_RANDOM_DETAIL_CONSTEXPR __forceinline
#elif defined(__GNUC__) && __GNUC__ >= 4
#define BOOST_RANDOM_DETAIL_CONSTEXPR inline __attribute__((__const__)) __attribute__((__always_inline__))
#else
#define BOOST_RANDOM_DETAIL_CONSTEXPR inline
#endif
template<int Shift>
struct integer_log2_impl
{
#if defined(BOOST_NO_CXX11_CONSTEXPR)
template<class T>
BOOST_RANDOM_DETAIL_CONSTEXPR static int apply(T t, int accum)
{
int update = ((t >> Shift) != 0) * Shift;
return integer_log2_impl<Shift / 2>::apply(t >> update, accum + update);
}
#else
template<class T>
BOOST_RANDOM_DETAIL_CONSTEXPR static int apply2(T t, int accum, int update)
{
return integer_log2_impl<Shift / 2>::apply(t >> update, accum + update);
}
template<class T>
BOOST_RANDOM_DETAIL_CONSTEXPR static int apply(T t, int accum)
{
return apply2(t, accum, ((t >> Shift) != 0) * Shift);
}
#endif
};
template<>
struct integer_log2_impl<1>
{
template<class T>
BOOST_RANDOM_DETAIL_CONSTEXPR static int apply(T t, int accum)
{
return int(t >> 1) + accum;
}
};
template<class T>
BOOST_RANDOM_DETAIL_CONSTEXPR int integer_log2(T t)
{
return integer_log2_impl<
::boost::detail::max_pow2_less<
::std::numeric_limits<T>::digits, 4
>::value
>::apply(t, 0);
}
} // namespace detail
} // namespace random
} // namespace boost
#endif // BOOST_RANDOM_DETAIL_INTEGER_LOG2_HPP
@@ -0,0 +1,45 @@
/* boost random/detail/iterator_mixin.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.
*
* Revision history
*/
#ifndef BOOST_ITERATOR_MIXIN_HPP
#define BOOST_ITERATOR_MIXIN_HPP
#include <boost/operators.hpp>
namespace boost {
// must be in boost namespace, otherwise the inline friend trick fails
template<class Generator, class ResultType>
class generator_iterator_mixin_adapter
: incrementable<Generator>, equality_comparable<Generator>
{
public:
typedef std::input_iterator_tag iterator_category;
typedef ResultType value_type;
typedef std::ptrdiff_t difference_type;
typedef const value_type * pointer;
typedef const value_type & reference;
Generator& operator++() { v = cast()(); return cast(); }
const value_type& operator*() const { return v; }
protected:
// instantiate from derived classes only
generator_iterator_mixin_adapter() { }
void iterator_init() { operator++(); }
private:
Generator & cast() { return static_cast<Generator&>(*this); }
value_type v;
};
} // namespace boost
#endif // BOOST_ITERATOR_MIXIN_HPP
@@ -0,0 +1,122 @@
/* boost random/detail/large_arithmetic.hpp header file
*
* Copyright Steven Watanabe 2011
* 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_DETAIL_LARGE_ARITHMETIC_HPP
#define BOOST_RANDOM_DETAIL_LARGE_ARITHMETIC_HPP
#include <boost/cstdint.hpp>
#include <boost/integer.hpp>
#include <boost/limits.hpp>
#include <boost/random/detail/integer_log2.hpp>
#include <boost/random/detail/disable_warnings.hpp>
namespace boost {
namespace random {
namespace detail {
struct div_t {
boost::uintmax_t quotient;
boost::uintmax_t remainder;
};
inline div_t muldivmod(boost::uintmax_t a, boost::uintmax_t b, boost::uintmax_t m)
{
const int bits =
::std::numeric_limits< ::boost::uintmax_t>::digits / 2;
const ::boost::uintmax_t mask = (::boost::uintmax_t(1) << bits) - 1;
typedef ::boost::uint_t<bits>::fast digit_t;
int shift = std::numeric_limits< ::boost::uintmax_t>::digits - 1
- detail::integer_log2(m);
a <<= shift;
m <<= shift;
digit_t product[4] = { 0, 0, 0, 0 };
digit_t a_[2] = { digit_t(a & mask), digit_t((a >> bits) & mask) };
digit_t b_[2] = { digit_t(b & mask), digit_t((b >> bits) & mask) };
digit_t m_[2] = { digit_t(m & mask), digit_t((m >> bits) & mask) };
// multiply a * b
for(int i = 0; i < 2; ++i) {
digit_t carry = 0;
for(int j = 0; j < 2; ++j) {
::boost::uint64_t temp = ::boost::uintmax_t(a_[i]) * b_[j] +
carry + product[i + j];
product[i + j] = digit_t(temp & mask);
carry = digit_t(temp >> bits);
}
if(carry != 0) {
product[i + 2] += carry;
}
}
digit_t quotient[2];
if(m == 0) {
div_t result = {
((::boost::uintmax_t(product[3]) << bits) | product[2]),
((::boost::uintmax_t(product[1]) << bits) | product[0]) >> shift,
};
return result;
}
// divide product / m
for(int i = 3; i >= 2; --i) {
::boost::uintmax_t temp =
::boost::uintmax_t(product[i]) << bits | product[i - 1];
digit_t q = digit_t((product[i] == m_[1]) ? mask : temp / m_[1]);
::boost::uintmax_t rem =
((temp - ::boost::uintmax_t(q) * m_[1]) << bits) + product[i - 2];
::boost::uintmax_t diff = m_[0] * ::boost::uintmax_t(q);
int error = 0;
if(diff > rem) {
if(diff - rem > m) {
error = 2;
} else {
error = 1;
}
}
q -= error;
rem = rem + error * m - diff;
quotient[i - 2] = q;
product[i] = 0;
product[i-1] = static_cast<digit_t>((rem >> bits) & mask);
product[i-2] = static_cast<digit_t>(rem & mask);
}
div_t result = {
((::boost::uintmax_t(quotient[1]) << bits) | quotient[0]),
((::boost::uintmax_t(product[1]) << bits) | product[0]) >> shift,
};
return result;
}
inline boost::uintmax_t muldiv(boost::uintmax_t a, boost::uintmax_t b, boost::uintmax_t m)
{ return detail::muldivmod(a, b, m).quotient; }
inline boost::uintmax_t mulmod(boost::uintmax_t a, boost::uintmax_t b, boost::uintmax_t m)
{ return detail::muldivmod(a, b, m).remainder; }
} // namespace detail
} // namespace random
} // namespace boost
#include <boost/random/detail/enable_warnings.hpp>
#endif // BOOST_RANDOM_DETAIL_LARGE_ARITHMETIC_HPP
@@ -0,0 +1,84 @@
/* boost random/detail/operators.hpp header file
*
* Copyright Steven Watanabe 2010-2011
* 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_DETAIL_OPERATORS_HPP
#define BOOST_RANDOM_DETAIL_OPERATORS_HPP
#include <boost/random/detail/config.hpp>
#include <boost/detail/workaround.hpp>
#if BOOST_WORKAROUND(BOOST_MSVC, <= 1310) \
|| BOOST_WORKAROUND(__SUNPRO_CC, BOOST_TESTED_AT(0x5100))
#define BOOST_RANDOM_DETAIL_OSTREAM_OPERATOR(os, T, t) \
template<class CharT, class Traits> \
friend std::basic_ostream<CharT,Traits>& \
operator<<(std::basic_ostream<CharT,Traits>& os, const T& t) { \
t.print(os, t); \
return os; \
} \
template<class CharT, class Traits> \
static std::basic_ostream<CharT,Traits>& \
print(std::basic_ostream<CharT,Traits>& os, const T& t)
#define BOOST_RANDOM_DETAIL_ISTREAM_OPERATOR(is, T, t) \
template<class CharT, class Traits> \
friend std::basic_istream<CharT,Traits>& \
operator>>(std::basic_istream<CharT,Traits>& is, T& t) { \
t.read(is, t); \
return is; \
} \
template<class CharT, class Traits> \
static std::basic_istream<CharT,Traits>& \
read(std::basic_istream<CharT,Traits>& is, T& t)
#endif
#if defined(__BORLANDC__)
#define BOOST_RANDOM_DETAIL_EQUALITY_OPERATOR(T, lhs, rhs) \
bool operator==(const T& rhs) const \
{ return T::is_equal(*this, rhs); } \
static bool is_equal(const T& lhs, const T& rhs)
#define BOOST_RANDOM_DETAIL_INEQUALITY_OPERATOR(T) \
bool operator!=(const T& rhs) const \
{ return !T::is_equal(*this, rhs); }
#endif
#ifndef BOOST_RANDOM_DETAIL_OSTREAM_OPERATOR
#define BOOST_RANDOM_DETAIL_OSTREAM_OPERATOR(os, T, t) \
template<class CharT, class Traits> \
friend std::basic_ostream<CharT,Traits>& \
operator<<(std::basic_ostream<CharT,Traits>& os, const T& t)
#endif
#ifndef BOOST_RANDOM_DETAIL_ISTREAM_OPERATOR
#define BOOST_RANDOM_DETAIL_ISTREAM_OPERATOR(is, T, t) \
template<class CharT, class Traits> \
friend std::basic_istream<CharT,Traits>& \
operator>>(std::basic_istream<CharT,Traits>& is, T& t)
#endif
#ifndef BOOST_RANDOM_DETAIL_EQUALITY_OPERATOR
#define BOOST_RANDOM_DETAIL_EQUALITY_OPERATOR(T, lhs, rhs) \
friend bool operator==(const T& lhs, const T& rhs)
#endif
#ifndef BOOST_RANDOM_DETAIL_INEQUALITY_OPERATOR
#define BOOST_RANDOM_DETAIL_INEQUALITY_OPERATOR(T) \
friend bool operator!=(const T& lhs, const T& rhs) \
{ return !(lhs == rhs); }
#endif
#endif
@@ -0,0 +1,384 @@
/* boost random/detail/polynomial.hpp header file
*
* Copyright Steven Watanabe 2014
* 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_DETAIL_POLYNOMIAL_HPP
#define BOOST_RANDOM_DETAIL_POLYNOMIAL_HPP
#include <cstddef>
#include <limits>
#include <vector>
#include <algorithm>
#include <boost/assert.hpp>
#include <boost/cstdint.hpp>
namespace boost {
namespace random {
namespace detail {
class polynomial_ops {
public:
typedef unsigned long digit_t;
static void add(std::size_t size, const digit_t * lhs,
const digit_t * rhs, digit_t * output)
{
for(std::size_t i = 0; i < size; ++i) {
output[i] = lhs[i] ^ rhs[i];
}
}
static void add_shifted_inplace(std::size_t size, const digit_t * lhs,
digit_t * output, std::size_t shift)
{
if(shift == 0) {
add(size, lhs, output, output);
return;
}
std::size_t bits = std::numeric_limits<digit_t>::digits;
digit_t prev = 0;
for(std::size_t i = 0; i < size; ++i) {
digit_t tmp = lhs[i];
output[i] ^= (tmp << shift) | (prev >> (bits-shift));
prev = tmp;
}
output[size] ^= (prev >> (bits-shift));
}
static void multiply_simple(std::size_t size, const digit_t * lhs,
const digit_t * rhs, digit_t * output)
{
std::size_t bits = std::numeric_limits<digit_t>::digits;
for(std::size_t i = 0; i < 2*size; ++i) {
output[i] = 0;
}
for(std::size_t i = 0; i < size; ++i) {
for(std::size_t j = 0; j < bits; ++j) {
if((lhs[i] & (digit_t(1) << j)) != 0) {
add_shifted_inplace(size, rhs, output + i, j);
}
}
}
}
// memory requirements: (size - cutoff) * 4 + next_smaller
static void multiply_karatsuba(std::size_t size,
const digit_t * lhs, const digit_t * rhs,
digit_t * output)
{
if(size < 64) {
multiply_simple(size, lhs, rhs, output);
return;
}
// split in half
std::size_t cutoff = size/2;
multiply_karatsuba(cutoff, lhs, rhs, output);
multiply_karatsuba(size - cutoff, lhs + cutoff, rhs + cutoff,
output + cutoff*2);
std::vector<digit_t> local1(size - cutoff);
std::vector<digit_t> local2(size - cutoff);
// combine the digits for the inner multiply
add(cutoff, lhs, lhs + cutoff, &local1[0]);
if(size & 1) local1[cutoff] = lhs[size - 1];
add(cutoff, rhs + cutoff, rhs, &local2[0]);
if(size & 1) local2[cutoff] = rhs[size - 1];
std::vector<digit_t> local3((size - cutoff) * 2);
multiply_karatsuba(size - cutoff, &local1[0], &local2[0], &local3[0]);
add(cutoff * 2, output, &local3[0], &local3[0]);
add((size - cutoff) * 2, output + cutoff*2, &local3[0], &local3[0]);
// Finally, add the inner result
add((size - cutoff) * 2, output + cutoff, &local3[0], output + cutoff);
}
static void multiply_add_karatsuba(std::size_t size,
const digit_t * lhs, const digit_t * rhs,
digit_t * output)
{
std::vector<digit_t> buf(size * 2);
multiply_karatsuba(size, lhs, rhs, &buf[0]);
add(size * 2, &buf[0], output, output);
}
static void multiply(const digit_t * lhs, std::size_t lhs_size,
const digit_t * rhs, std::size_t rhs_size,
digit_t * output)
{
std::fill_n(output, lhs_size + rhs_size, digit_t(0));
multiply_add(lhs, lhs_size, rhs, rhs_size, output);
}
static void multiply_add(const digit_t * lhs, std::size_t lhs_size,
const digit_t * rhs, std::size_t rhs_size,
digit_t * output)
{
// split into pieces that can be passed to
// karatsuba multiply.
while(lhs_size != 0) {
if(lhs_size < rhs_size) {
std::swap(lhs, rhs);
std::swap(lhs_size, rhs_size);
}
multiply_add_karatsuba(rhs_size, lhs, rhs, output);
lhs += rhs_size;
lhs_size -= rhs_size;
output += rhs_size;
}
}
static void copy_bits(const digit_t * x, std::size_t low, std::size_t high,
digit_t * out)
{
const std::size_t bits = std::numeric_limits<digit_t>::digits;
std::size_t offset = low/bits;
x += offset;
low -= offset*bits;
high -= offset*bits;
std::size_t n = (high-low)/bits;
if(low == 0) {
for(std::size_t i = 0; i < n; ++i) {
out[i] = x[i];
}
} else {
for(std::size_t i = 0; i < n; ++i) {
out[i] = (x[i] >> low) | (x[i+1] << (bits-low));
}
}
if((high-low)%bits) {
digit_t low_mask = (digit_t(1) << ((high-low)%bits)) - 1;
digit_t result = (x[n] >> low);
if(low != 0 && (n+1)*bits < high) {
result |= (x[n+1] << (bits-low));
}
out[n] = (result & low_mask);
}
}
static void shift_left(digit_t * val, std::size_t size, std::size_t shift)
{
const std::size_t bits = std::numeric_limits<digit_t>::digits;
BOOST_ASSERT(shift > 0);
BOOST_ASSERT(shift < bits);
digit_t prev = 0;
for(std::size_t i = 0; i < size; ++i) {
digit_t tmp = val[i];
val[i] = (prev >> (bits - shift)) | (val[i] << shift);
prev = tmp;
}
}
static digit_t sqr(digit_t val) {
const std::size_t bits = std::numeric_limits<digit_t>::digits;
digit_t mask = (digit_t(1) << bits/2) - 1;
for(std::size_t i = bits; i > 1; i /= 2) {
val = ((val & ~mask) << i/2) | (val & mask);
mask = mask & (mask >> i/4);
mask = mask | (mask << i/2);
}
return val;
}
static void sqr(digit_t * val, std::size_t size)
{
const std::size_t bits = std::numeric_limits<digit_t>::digits;
digit_t mask = (digit_t(1) << bits/2) - 1;
for(std::size_t i = 0; i < size; ++i) {
digit_t x = val[size - i - 1];
val[(size - i - 1) * 2] = sqr(x & mask);
val[(size - i - 1) * 2 + 1] = sqr(x >> bits/2);
}
}
// optimized for the case when the modulus has few bits set.
struct sparse_mod {
sparse_mod(const digit_t * divisor, std::size_t divisor_bits)
{
const std::size_t bits = std::numeric_limits<digit_t>::digits;
_remainder_bits = divisor_bits - 1;
for(std::size_t i = 0; i < divisor_bits; ++i) {
if(divisor[i/bits] & (digit_t(1) << i%bits)) {
_bit_indices.push_back(i);
}
}
BOOST_ASSERT(_bit_indices.back() == divisor_bits - 1);
_bit_indices.pop_back();
if(_bit_indices.empty()) {
_block_bits = divisor_bits;
_lower_bits = 0;
} else {
_block_bits = divisor_bits - _bit_indices.back() - 1;
_lower_bits = _bit_indices.back() + 1;
}
_partial_quotient.resize((_block_bits + bits - 1)/bits);
}
void operator()(digit_t * dividend, std::size_t dividend_bits)
{
const std::size_t bits = std::numeric_limits<digit_t>::digits;
while(dividend_bits > _remainder_bits) {
std::size_t block_start = (std::max)(dividend_bits - _block_bits, _remainder_bits);
std::size_t block_size = (dividend_bits - block_start + bits - 1) / bits;
copy_bits(dividend, block_start, dividend_bits, &_partial_quotient[0]);
for(std::size_t i = 0; i < _bit_indices.size(); ++i) {
std::size_t pos = _bit_indices[i] + block_start - _remainder_bits;
add_shifted_inplace(block_size, &_partial_quotient[0], dividend + pos/bits, pos%bits);
}
add_shifted_inplace(block_size, &_partial_quotient[0], dividend + block_start/bits, block_start%bits);
dividend_bits = block_start;
}
}
std::vector<digit_t> _partial_quotient;
std::size_t _remainder_bits;
std::size_t _block_bits;
std::size_t _lower_bits;
std::vector<std::size_t> _bit_indices;
};
// base should have the same number of bits as mod
// base, and mod should both be able to hold a power
// of 2 >= mod_bits. out needs to be twice as large.
static void mod_pow_x(boost::uintmax_t exponent, const digit_t * mod, std::size_t mod_bits, digit_t * out)
{
const std::size_t bits = std::numeric_limits<digit_t>::digits;
const std::size_t n = (mod_bits + bits - 1) / bits;
const std::size_t highbit = mod_bits - 1;
if(exponent == 0) {
out[0] = 1;
std::fill_n(out + 1, n - 1, digit_t(0));
return;
}
boost::uintmax_t i = std::numeric_limits<boost::uintmax_t>::digits - 1;
while(((boost::uintmax_t(1) << i) & exponent) == 0) {
--i;
}
out[0] = 2;
std::fill_n(out + 1, n - 1, digit_t(0));
sparse_mod m(mod, mod_bits);
while(i--) {
sqr(out, n);
m(out, 2 * mod_bits - 1);
if((boost::uintmax_t(1) << i) & exponent) {
shift_left(out, n, 1);
if(out[highbit / bits] & (digit_t(1) << highbit%bits))
add(n, out, mod, out);
}
}
}
};
class polynomial
{
typedef polynomial_ops::digit_t digit_t;
public:
polynomial() : _size(0) {}
class reference {
public:
reference(digit_t &value, int idx)
: _value(value), _idx(idx) {}
operator bool() const { return (_value & (digit_t(1) << _idx)) != 0; }
reference& operator=(bool b)
{
if(b) {
_value |= (digit_t(1) << _idx);
} else {
_value &= ~(digit_t(1) << _idx);
}
return *this;
}
reference &operator^=(bool b)
{
_value ^= (digit_t(b) << _idx);
return *this;
}
reference &operator=(const reference &other)
{
return *this = static_cast<bool>(other);
}
private:
digit_t &_value;
int _idx;
};
reference operator[](std::size_t i)
{
static const std::size_t bits = std::numeric_limits<digit_t>::digits;
ensure_bit(i);
return reference(_storage[i/bits], i%bits);
}
bool operator[](std::size_t i) const
{
static const std::size_t bits = std::numeric_limits<digit_t>::digits;
if(i < size())
return (_storage[i/bits] & (digit_t(1) << (i%bits))) != 0;
else
return false;
}
std::size_t size() const
{
return _size;
}
void resize(std::size_t n)
{
static const std::size_t bits = std::numeric_limits<digit_t>::digits;
_storage.resize((n + bits - 1)/bits);
// clear the high order bits in case we're shrinking.
if(n%bits) {
_storage.back() &= ((digit_t(1) << (n%bits)) - 1);
}
_size = n;
}
friend polynomial operator*(const polynomial &lhs, const polynomial &rhs);
friend polynomial mod_pow_x(boost::uintmax_t exponent, polynomial mod);
private:
std::vector<polynomial_ops::digit_t> _storage;
std::size_t _size;
void ensure_bit(std::size_t i)
{
if(i >= size()) {
resize(i + 1);
}
}
void normalize()
{
while(size() && (*this)[size() - 1] == 0)
resize(size() - 1);
}
};
inline polynomial operator*(const polynomial &lhs, const polynomial &rhs)
{
polynomial result;
result._storage.resize(lhs._storage.size() + rhs._storage.size());
polynomial_ops::multiply(&lhs._storage[0], lhs._storage.size(),
&rhs._storage[0], rhs._storage.size(),
&result._storage[0]);
result._size = lhs._size + rhs._size;
return result;
}
inline polynomial mod_pow_x(boost::uintmax_t exponent, polynomial mod)
{
polynomial result;
mod.normalize();
std::size_t mod_size = mod.size();
result._storage.resize(mod._storage.size() * 2);
result._size = mod.size() * 2;
polynomial_ops::mod_pow_x(exponent, &mod._storage[0], mod_size, &result._storage[0]);
result.resize(mod.size() - 1);
return result;
}
}
}
}
#endif // BOOST_RANDOM_DETAIL_POLYNOMIAL_HPP
@@ -0,0 +1,67 @@
/* boost random/detail/ptr_helper.hpp header file
*
* Copyright Jens Maurer 2002
* 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_DETAIL_PTR_HELPER_HPP
#define BOOST_RANDOM_DETAIL_PTR_HELPER_HPP
#include <boost/config.hpp>
namespace boost {
namespace random {
namespace detail {
// type_traits could help here, but I don't want to depend on type_traits.
template<class T>
struct ptr_helper
{
typedef T value_type;
typedef T& reference_type;
typedef const T& rvalue_type;
static reference_type ref(T& r) { return r; }
static const T& ref(const T& r) { return r; }
};
template<class T>
struct ptr_helper<T&>
{
typedef T value_type;
typedef T& reference_type;
typedef T& rvalue_type;
static reference_type ref(T& r) { return r; }
static const T& ref(const T& r) { return r; }
};
template<class T>
struct ptr_helper<T*>
{
typedef T value_type;
typedef T& reference_type;
typedef T* rvalue_type;
static reference_type ref(T * p) { return *p; }
static const T& ref(const T * p) { return *p; }
};
} // namespace detail
} // namespace random
} // namespace boost
//
// BOOST_RANDOM_PTR_HELPER_SPEC --
//
// Helper macro for broken compilers defines specializations of
// ptr_helper.
//
# define BOOST_RANDOM_PTR_HELPER_SPEC(T)
#endif // BOOST_RANDOM_DETAIL_PTR_HELPER_HPP
@@ -0,0 +1,115 @@
/* boost random/detail/seed.hpp header file
*
* Copyright Steven Watanabe 2009
* 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_DETAIL_SEED_HPP
#define BOOST_RANDOM_DETAIL_SEED_HPP
#include <boost/config.hpp>
// Sun seems to have trouble with the use of SFINAE for the
// templated constructor. So does Borland.
#if !defined(BOOST_NO_SFINAE) && !defined(__SUNPRO_CC) && !defined(__BORLANDC__)
#include <boost/utility/enable_if.hpp>
#include <boost/type_traits/is_arithmetic.hpp>
#include <boost/mpl/bool.hpp>
namespace boost {
namespace random {
namespace detail {
template<class T>
struct disable_seed : boost::disable_if<boost::is_arithmetic<T> > {};
template<class Engine, class T>
struct disable_constructor : disable_seed<T> {};
template<class Engine>
struct disable_constructor<Engine, Engine> {};
#define BOOST_RANDOM_DETAIL_GENERATOR_CONSTRUCTOR(Self, Generator, gen) \
template<class Generator> \
explicit Self(Generator& gen, typename ::boost::random::detail::disable_constructor<Self, Generator>::type* = 0)
#define BOOST_RANDOM_DETAIL_GENERATOR_SEED(Self, Generator, gen) \
template<class Generator> \
void seed(Generator& gen, typename ::boost::random::detail::disable_seed<Generator>::type* = 0)
#define BOOST_RANDOM_DETAIL_SEED_SEQ_CONSTRUCTOR(Self, SeedSeq, seq) \
template<class SeedSeq> \
explicit Self(SeedSeq& seq, typename ::boost::random::detail::disable_constructor<Self, SeedSeq>::type* = 0)
#define BOOST_RANDOM_DETAIL_SEED_SEQ_SEED(Self, SeedSeq, seq) \
template<class SeedSeq> \
void seed(SeedSeq& seq, typename ::boost::random::detail::disable_seed<SeedSeq>::type* = 0)
#define BOOST_RANDOM_DETAIL_ARITHMETIC_CONSTRUCTOR(Self, T, x) \
explicit Self(const T& x)
#define BOOST_RANDOM_DETAIL_ARITHMETIC_SEED(Self, T, x) \
void seed(const T& x)
}
}
}
#else
#include <boost/type_traits/is_arithmetic.hpp>
#include <boost/mpl/bool.hpp>
#define BOOST_RANDOM_DETAIL_GENERATOR_CONSTRUCTOR(Self, Generator, gen) \
Self(Self& other) { *this = other; } \
Self(const Self& other) { *this = other; } \
template<class Generator> \
explicit Self(Generator& gen) { \
boost_random_constructor_impl(gen, ::boost::is_arithmetic<Generator>());\
} \
template<class Generator> \
void boost_random_constructor_impl(Generator& gen, ::boost::mpl::false_)
#define BOOST_RANDOM_DETAIL_GENERATOR_SEED(Self, Generator, gen) \
template<class Generator> \
void seed(Generator& gen) { \
boost_random_seed_impl(gen, ::boost::is_arithmetic<Generator>());\
}\
template<class Generator>\
void boost_random_seed_impl(Generator& gen, ::boost::mpl::false_)
#define BOOST_RANDOM_DETAIL_SEED_SEQ_CONSTRUCTOR(Self, SeedSeq, seq) \
Self(Self& other) { *this = other; } \
Self(const Self& other) { *this = other; } \
template<class SeedSeq> \
explicit Self(SeedSeq& seq) { \
boost_random_constructor_impl(seq, ::boost::is_arithmetic<SeedSeq>());\
} \
template<class SeedSeq> \
void boost_random_constructor_impl(SeedSeq& seq, ::boost::mpl::false_)
#define BOOST_RANDOM_DETAIL_SEED_SEQ_SEED(Self, SeedSeq, seq) \
template<class SeedSeq> \
void seed(SeedSeq& seq) { \
boost_random_seed_impl(seq, ::boost::is_arithmetic<SeedSeq>()); \
} \
template<class SeedSeq> \
void boost_random_seed_impl(SeedSeq& seq, ::boost::mpl::false_)
#define BOOST_RANDOM_DETAIL_ARITHMETIC_CONSTRUCTOR(Self, T, x) \
explicit Self(const T& x) { boost_random_constructor_impl(x, ::boost::mpl::true_()); }\
void boost_random_constructor_impl(const T& x, ::boost::mpl::true_)
#define BOOST_RANDOM_DETAIL_ARITHMETIC_SEED(Self, T, x) \
void seed(const T& x) { boost_random_seed_impl(x, ::boost::mpl::true_()); }\
void boost_random_seed_impl(const T& x, ::boost::mpl::true_)
#endif
#endif
@@ -0,0 +1,398 @@
/* boost random/detail/seed.hpp header file
*
* Copyright Steven Watanabe 2009
* 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_DETAIL_SEED_IMPL_HPP
#define BOOST_RANDOM_DETAIL_SEED_IMPL_HPP
#include <stdexcept>
#include <boost/cstdint.hpp>
#include <boost/throw_exception.hpp>
#include <boost/config/no_tr1/cmath.hpp>
#include <boost/integer/integer_mask.hpp>
#include <boost/integer/static_log2.hpp>
#include <boost/random/traits.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/int.hpp>
#include <boost/random/detail/const_mod.hpp>
#include <boost/random/detail/integer_log2.hpp>
#include <boost/random/detail/signed_unsigned_tools.hpp>
#include <boost/random/detail/generator_bits.hpp>
#include <boost/random/detail/disable_warnings.hpp>
namespace boost {
namespace random {
namespace detail {
// finds the seed type of an engine, given its
// result_type. If the result_type is integral
// the seed type is the same. If the result_type
// is floating point, the seed type is uint32_t
template<class T>
struct seed_type
{
typedef typename boost::mpl::if_<boost::is_integral<T>,
T,
boost::uint32_t
>::type type;
};
template<int N>
struct const_pow_impl
{
template<class T>
static T call(T arg, int n, T result)
{
return const_pow_impl<N / 2>::call(T(arg * arg), n / 2,
n%2 == 0? result : T(result * arg));
}
};
template<>
struct const_pow_impl<0>
{
template<class T>
static T call(T, int, T result)
{
return result;
}
};
// requires N is an upper bound on n
template<int N, class T>
inline T const_pow(T arg, int n) { return const_pow_impl<N>::call(arg, n, T(1)); }
template<class T>
inline T pow2(int n)
{
typedef unsigned int_type;
const int max_bits = std::numeric_limits<int_type>::digits;
T multiplier = T(int_type(1) << (max_bits - 1)) * 2;
return (int_type(1) << (n % max_bits)) *
const_pow<std::numeric_limits<T>::digits / max_bits>(multiplier, n / max_bits);
}
template<class Engine, class Iter>
void generate_from_real(Engine& eng, Iter begin, Iter end)
{
using std::fmod;
typedef typename Engine::result_type RealType;
const int Bits = detail::generator_bits<Engine>::value();
int remaining_bits = 0;
boost::uint_least32_t saved_bits = 0;
RealType multiplier = pow2<RealType>( Bits);
RealType mult32 = RealType(4294967296.0); // 2^32
while(true) {
RealType val = eng() * multiplier;
int available_bits = Bits;
// Make sure the compiler can optimize this out
// if it isn't possible.
if(Bits < 32 && available_bits < 32 - remaining_bits) {
saved_bits |= boost::uint_least32_t(val) << remaining_bits;
remaining_bits += Bits;
} else {
// If Bits < 32, then remaining_bits != 0, since
// if remaining_bits == 0, available_bits < 32 - 0,
// and we won't get here to begin with.
if(Bits < 32 || remaining_bits != 0) {
boost::uint_least32_t divisor =
(boost::uint_least32_t(1) << (32 - remaining_bits));
boost::uint_least32_t extra_bits = boost::uint_least32_t(fmod(val, mult32)) & (divisor - 1);
val = val / divisor;
*begin++ = saved_bits | (extra_bits << remaining_bits);
if(begin == end) return;
available_bits -= 32 - remaining_bits;
remaining_bits = 0;
}
// If Bits < 32 we should never enter this loop
if(Bits >= 32) {
for(; available_bits >= 32; available_bits -= 32) {
boost::uint_least32_t word = boost::uint_least32_t(fmod(val, mult32));
val /= mult32;
*begin++ = word;
if(begin == end) return;
}
}
remaining_bits = available_bits;
saved_bits = static_cast<boost::uint_least32_t>(val);
}
}
}
template<class Engine, class Iter>
void generate_from_int(Engine& eng, Iter begin, Iter end)
{
typedef typename Engine::result_type IntType;
typedef typename boost::random::traits::make_unsigned<IntType>::type unsigned_type;
int remaining_bits = 0;
boost::uint_least32_t saved_bits = 0;
unsigned_type range = boost::random::detail::subtract<IntType>()((eng.max)(), (eng.min)());
int bits =
(range == (std::numeric_limits<unsigned_type>::max)()) ?
std::numeric_limits<unsigned_type>::digits :
detail::integer_log2(range + 1);
{
int discarded_bits = detail::integer_log2(bits);
unsigned_type excess = (range + 1) >> (bits - discarded_bits);
if(excess != 0) {
int extra_bits = detail::integer_log2((excess - 1) ^ excess);
bits = bits - discarded_bits + extra_bits;
}
}
unsigned_type mask = (static_cast<unsigned_type>(2) << (bits - 1)) - 1;
unsigned_type limit = ((range + 1) & ~mask) - 1;
while(true) {
unsigned_type val;
do {
val = boost::random::detail::subtract<IntType>()(eng(), (eng.min)());
} while(limit != range && val > limit);
val &= mask;
int available_bits = bits;
if(available_bits == 32) {
*begin++ = static_cast<boost::uint_least32_t>(val) & 0xFFFFFFFFu;
if(begin == end) return;
} else if(available_bits % 32 == 0) {
for(int i = 0; i < available_bits / 32; ++i) {
boost::uint_least32_t word = boost::uint_least32_t(val) & 0xFFFFFFFFu;
int suppress_warning = (bits >= 32);
BOOST_ASSERT(suppress_warning == 1);
val >>= (32 * suppress_warning);
*begin++ = word;
if(begin == end) return;
}
} else if(bits < 32 && available_bits < 32 - remaining_bits) {
saved_bits |= boost::uint_least32_t(val) << remaining_bits;
remaining_bits += bits;
} else {
if(bits < 32 || remaining_bits != 0) {
boost::uint_least32_t extra_bits = boost::uint_least32_t(val) & ((boost::uint_least32_t(1) << (32 - remaining_bits)) - 1);
val >>= 32 - remaining_bits;
*begin++ = saved_bits | (extra_bits << remaining_bits);
if(begin == end) return;
available_bits -= 32 - remaining_bits;
remaining_bits = 0;
}
if(bits >= 32) {
for(; available_bits >= 32; available_bits -= 32) {
boost::uint_least32_t word = boost::uint_least32_t(val) & 0xFFFFFFFFu;
int suppress_warning = (bits >= 32);
BOOST_ASSERT(suppress_warning == 1);
val >>= (32 * suppress_warning);
*begin++ = word;
if(begin == end) return;
}
}
remaining_bits = available_bits;
saved_bits = static_cast<boost::uint_least32_t>(val);
}
}
}
template<class Engine, class Iter>
void generate_impl(Engine& eng, Iter first, Iter last, boost::mpl::true_)
{
return detail::generate_from_int(eng, first, last);
}
template<class Engine, class Iter>
void generate_impl(Engine& eng, Iter first, Iter last, boost::mpl::false_)
{
return detail::generate_from_real(eng, first, last);
}
template<class Engine, class Iter>
void generate(Engine& eng, Iter first, Iter last)
{
return detail::generate_impl(eng, first, last, boost::random::traits::is_integral<typename Engine::result_type>());
}
template<class IntType, IntType m, class SeedSeq>
IntType seed_one_int(SeedSeq& seq)
{
static const int log = ::boost::mpl::if_c<(m == 0),
::boost::mpl::int_<(::std::numeric_limits<IntType>::digits)>,
::boost::static_log2<m> >::type::value;
static const int k =
(log + ((~(static_cast<IntType>(2) << (log - 1)) & m)? 32 : 31)) / 32;
::boost::uint_least32_t array[log / 32 + 4];
seq.generate(&array[0], &array[0] + k + 3);
IntType s = 0;
for(int j = 0; j < k; ++j) {
IntType digit = const_mod<IntType, m>::apply(IntType(array[j+3]));
IntType mult = IntType(1) << 32*j;
s = const_mod<IntType, m>::mult_add(mult, digit, s);
}
return s;
}
template<class IntType, IntType m, class Iter>
IntType get_one_int(Iter& first, Iter last)
{
static const int log = ::boost::mpl::if_c<(m == 0),
::boost::mpl::int_<(::std::numeric_limits<IntType>::digits)>,
::boost::static_log2<m> >::type::value;
static const int k =
(log + ((~(static_cast<IntType>(2) << (log - 1)) & m)? 32 : 31)) / 32;
IntType s = 0;
for(int j = 0; j < k; ++j) {
if(first == last) {
boost::throw_exception(::std::invalid_argument("Not enough elements in call to seed."));
}
IntType digit = const_mod<IntType, m>::apply(IntType(*first++));
IntType mult = IntType(1) << 32*j;
s = const_mod<IntType, m>::mult_add(mult, digit, s);
}
return s;
}
// TODO: work in-place whenever possible
template<int w, std::size_t n, class SeedSeq, class UIntType>
void seed_array_int_impl(SeedSeq& seq, UIntType (&x)[n])
{
boost::uint_least32_t storage[((w+31)/32) * n];
seq.generate(&storage[0], &storage[0] + ((w+31)/32) * n);
for(std::size_t j = 0; j < n; j++) {
UIntType val = 0;
for(std::size_t k = 0; k < (w+31)/32; ++k) {
val += static_cast<UIntType>(storage[(w+31)/32*j + k]) << 32*k;
}
x[j] = val & ::boost::low_bits_mask_t<w>::sig_bits;
}
}
template<int w, std::size_t n, class SeedSeq, class IntType>
inline void seed_array_int_impl(SeedSeq& seq, IntType (&x)[n], boost::mpl::true_)
{
BOOST_STATIC_ASSERT_MSG(boost::is_integral<IntType>::value, "Sorry but this routine has not been ported to non built-in integers as it relies on a reinterpret_cast.");
typedef typename boost::make_unsigned<IntType>::type unsigned_array[n];
seed_array_int_impl<w>(seq, reinterpret_cast<unsigned_array&>(x));
}
template<int w, std::size_t n, class SeedSeq, class IntType>
inline void seed_array_int_impl(SeedSeq& seq, IntType (&x)[n], boost::mpl::false_)
{
seed_array_int_impl<w>(seq, x);
}
template<int w, std::size_t n, class SeedSeq, class IntType>
inline void seed_array_int(SeedSeq& seq, IntType (&x)[n])
{
seed_array_int_impl<w>(seq, x, boost::random::traits::is_signed<IntType>());
}
template<int w, std::size_t n, class Iter, class UIntType>
void fill_array_int_impl(Iter& first, Iter last, UIntType (&x)[n])
{
for(std::size_t j = 0; j < n; j++) {
UIntType val = 0;
for(std::size_t k = 0; k < (w+31)/32; ++k) {
if(first == last) {
boost::throw_exception(std::invalid_argument("Not enough elements in call to seed."));
}
val += static_cast<UIntType>(*first++) << 32*k;
}
x[j] = val & ::boost::low_bits_mask_t<w>::sig_bits;
}
}
template<int w, std::size_t n, class Iter, class IntType>
inline void fill_array_int_impl(Iter& first, Iter last, IntType (&x)[n], boost::mpl::true_)
{
BOOST_STATIC_ASSERT_MSG(boost::is_integral<IntType>::value, "Sorry but this routine has not been ported to non built-in integers as it relies on a reinterpret_cast.");
typedef typename boost::make_unsigned<IntType>::type unsigned_array[n];
fill_array_int_impl<w>(first, last, reinterpret_cast<unsigned_array&>(x));
}
template<int w, std::size_t n, class Iter, class IntType>
inline void fill_array_int_impl(Iter& first, Iter last, IntType (&x)[n], boost::mpl::false_)
{
fill_array_int_impl<w>(first, last, x);
}
template<int w, std::size_t n, class Iter, class IntType>
inline void fill_array_int(Iter& first, Iter last, IntType (&x)[n])
{
fill_array_int_impl<w>(first, last, x, boost::random::traits::is_signed<IntType>());
}
template<int w, std::size_t n, class RealType>
void seed_array_real_impl(const boost::uint_least32_t* storage, RealType (&x)[n])
{
boost::uint_least32_t mask = ~((~boost::uint_least32_t(0)) << (w%32));
RealType two32 = 4294967296.0;
const RealType divisor = RealType(1)/detail::pow2<RealType>(w);
unsigned int j;
for(j = 0; j < n; ++j) {
RealType val = RealType(0);
RealType mult = divisor;
for(int k = 0; k < w/32; ++k) {
val += *storage++ * mult;
mult *= two32;
}
if(mask != 0) {
val += (*storage++ & mask) * mult;
}
BOOST_ASSERT(val >= 0);
BOOST_ASSERT(val < 1);
x[j] = val;
}
}
template<int w, std::size_t n, class SeedSeq, class RealType>
void seed_array_real(SeedSeq& seq, RealType (&x)[n])
{
using std::pow;
boost::uint_least32_t storage[((w+31)/32) * n];
seq.generate(&storage[0], &storage[0] + ((w+31)/32) * n);
seed_array_real_impl<w>(storage, x);
}
template<int w, std::size_t n, class Iter, class RealType>
void fill_array_real(Iter& first, Iter last, RealType (&x)[n])
{
boost::uint_least32_t mask = ~((~boost::uint_least32_t(0)) << (w%32));
RealType two32 = 4294967296.0;
const RealType divisor = RealType(1)/detail::pow2<RealType>(w);
unsigned int j;
for(j = 0; j < n; ++j) {
RealType val = RealType(0);
RealType mult = divisor;
for(int k = 0; k < w/32; ++k, ++first) {
if(first == last) boost::throw_exception(std::invalid_argument("Not enough elements in call to seed."));
val += *first * mult;
mult *= two32;
}
if(mask != 0) {
if(first == last) boost::throw_exception(std::invalid_argument("Not enough elements in call to seed."));
val += (*first & mask) * mult;
++first;
}
BOOST_ASSERT(val >= 0);
BOOST_ASSERT(val < 1);
x[j] = val;
}
}
}
}
}
#include <boost/random/detail/enable_warnings.hpp>
#endif
@@ -0,0 +1,89 @@
/* boost random/detail/signed_unsigned_tools.hpp header file
*
* Copyright Jens Maurer 2006
* 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.
*/
#ifndef BOOST_RANDOM_DETAIL_SIGNED_UNSIGNED_TOOLS
#define BOOST_RANDOM_DETAIL_SIGNED_UNSIGNED_TOOLS
#include <boost/limits.hpp>
#include <boost/config.hpp>
#include <boost/random/traits.hpp>
namespace boost {
namespace random {
namespace detail {
/*
* Compute x - y, we know that x >= y, return an unsigned value.
*/
template<class T, bool sgn = std::numeric_limits<T>::is_signed && std::numeric_limits<T>::is_bounded>
struct subtract { };
template<class T>
struct subtract<T, /* signed */ false>
{
typedef T result_type;
result_type operator()(T x, T y) { return x - y; }
};
template<class T>
struct subtract<T, /* signed */ true>
{
typedef typename boost::random::traits::make_unsigned_or_unbounded<T>::type result_type;
result_type operator()(T x, T y)
{
if (y >= 0) // because x >= y, it follows that x >= 0, too
return result_type(x) - result_type(y);
if (x >= 0) // y < 0
// avoid the nasty two's complement case for y == min()
return result_type(x) + result_type(-(y+1)) + 1;
// both x and y are negative: no signed overflow
return result_type(x - y);
}
};
/*
* Compute x + y, x is unsigned, result fits in type of "y".
*/
template<class T1, class T2, bool sgn = (std::numeric_limits<T2>::is_signed && (std::numeric_limits<T1>::digits >= std::numeric_limits<T2>::digits))>
struct add { };
template<class T1, class T2>
struct add<T1, T2, /* signed or else T2 has more digits than T1 so the cast always works - needed when T2 is a multiprecision type and T1 is a native integer */ false>
{
typedef T2 result_type;
result_type operator()(T1 x, T2 y) { return T2(x) + y; }
};
template<class T1, class T2>
struct add<T1, T2, /* signed */ true>
{
typedef T2 result_type;
result_type operator()(T1 x, T2 y)
{
if (y >= 0)
return T2(x) + y;
// y < 0
if (x > T1(-(y+1))) // result >= 0 after subtraction
// avoid the nasty two's complement edge case for y == min()
return T2(x - T1(-(y+1)) - 1);
// abs(x) < abs(y), thus T2 able to represent x
return T2(x) + y;
}
};
} // namespace detail
} // namespace random
} // namespace boost
#endif // BOOST_RANDOM_DETAIL_SIGNED_UNSIGNED_TOOLS
@@ -0,0 +1,76 @@
/* boost random/detail/uniform_int_float.hpp header file
*
* Copyright Jens Maurer 2000-2001
* Copyright Steven Watanabe 2011
* 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_DETAIL_UNIFORM_INT_FLOAT_HPP
#define BOOST_RANDOM_DETAIL_UNIFORM_INT_FLOAT_HPP
#include <boost/limits.hpp>
#include <boost/config.hpp>
#include <boost/integer.hpp>
#include <boost/random/detail/config.hpp>
#include <boost/random/detail/generator_bits.hpp>
#include <boost/random/detail/disable_warnings.hpp>
namespace boost {
namespace random {
namespace detail {
template<class URNG>
class uniform_int_float
{
public:
typedef URNG base_type;
typedef typename base_type::result_type base_result;
typedef typename boost::uint_t<
(std::numeric_limits<boost::uintmax_t>::digits <
std::numeric_limits<base_result>::digits)?
std::numeric_limits<boost::uintmax_t>::digits :
std::numeric_limits<base_result>::digits
>::fast result_type;
uniform_int_float(base_type& rng)
: _rng(rng) {}
static result_type min BOOST_PREVENT_MACRO_SUBSTITUTION ()
{ return 0; }
static result_type max BOOST_PREVENT_MACRO_SUBSTITUTION ()
{
std::size_t digits = std::numeric_limits<result_type>::digits;
if(detail::generator_bits<URNG>::value() < digits) {
digits = detail::generator_bits<URNG>::value();
}
return (result_type(2) << (digits - 1)) - 1;
}
base_type& base() { return _rng; }
const base_type& base() const { return _rng; }
result_type operator()()
{
base_result range = static_cast<base_result>((max)())+1;
return static_cast<result_type>(_rng() * range);
}
private:
base_type& _rng;
};
} // namespace detail
} // namespace random
} // namespace boost
#include <boost/random/detail/enable_warnings.hpp>
#endif // BOOST_RANDOM_DETAIL_UNIFORM_INT_FLOAT_HPP
@@ -0,0 +1,75 @@
/* boost random/vector_io.hpp header file
*
* Copyright Steven Watanabe 2011
* 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_DETAIL_VECTOR_IO_HPP
#define BOOST_RANDOM_DETAIL_VECTOR_IO_HPP
#include <vector>
#include <iosfwd>
#include <istream>
namespace boost {
namespace random {
namespace detail {
template<class CharT, class Traits, class T>
void print_vector(std::basic_ostream<CharT, Traits>& os,
const std::vector<T>& vec)
{
typename std::vector<T>::const_iterator
iter = vec.begin(),
end = vec.end();
os << os.widen('[');
if(iter != end) {
os << *iter;
++iter;
for(; iter != end; ++iter)
{
os << os.widen(' ') << *iter;
}
}
os << os.widen(']');
}
template<class CharT, class Traits, class T>
void read_vector(std::basic_istream<CharT, Traits>& is, std::vector<T>& vec)
{
CharT ch;
if(!(is >> ch)) {
return;
}
if(ch != is.widen('[')) {
is.putback(ch);
is.setstate(std::ios_base::failbit);
return;
}
T val;
while(is >> std::ws >> val) {
vec.push_back(val);
}
if(is.fail()) {
is.clear();
if(!(is >> ch)) {
return;
}
if(ch != is.widen(']')) {
is.putback(ch);
is.setstate(std::ios_base::failbit);
}
}
}
}
}
}
#endif // BOOST_RANDOM_DETAIL_VECTOR_IO_HPP