diff options
Diffstat (limited to '3rdParty/Boost/src/boost/random/linear_congruential.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/random/linear_congruential.hpp | 403 | 
1 files changed, 0 insertions, 403 deletions
| diff --git a/3rdParty/Boost/src/boost/random/linear_congruential.hpp b/3rdParty/Boost/src/boost/random/linear_congruential.hpp deleted file mode 100644 index 351b9c1..0000000 --- a/3rdParty/Boost/src/boost/random/linear_congruential.hpp +++ /dev/null @@ -1,403 +0,0 @@ -/* 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 60755 2010-03-22 00:45:06Z steven_watanabe $ - * - * Revision history - *  2001-02-18  moved to individual header files - */ - -#ifndef BOOST_RANDOM_LINEAR_CONGRUENTIAL_HPP -#define BOOST_RANDOM_LINEAR_CONGRUENTIAL_HPP - -#include <iostream> -#include <cassert> -#include <stdexcept> -#include <boost/config.hpp> -#include <boost/limits.hpp> -#include <boost/static_assert.hpp> -#include <boost/random/detail/config.hpp> -#include <boost/random/detail/const_mod.hpp> -#include <boost/detail/workaround.hpp> - -#include <boost/random/detail/disable_warnings.hpp> - -namespace boost { -namespace random { - -/** - * Instantiations of class template linear_congruential model a - * \pseudo_random_number_generator. Linear congruential pseudo-random - * number generators are described in: - * - *  "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 - * - * 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, IntType val> -class linear_congruential -{ -public: -  typedef IntType result_type; -#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION -  static const bool has_fixed_range = true; -  static const result_type min_value = ( c == 0 ? 1 : 0 ); -  static const result_type max_value = m-1; -#else -  BOOST_STATIC_CONSTANT(bool, has_fixed_range = false); -#endif -  BOOST_STATIC_CONSTANT(IntType, multiplier = a); -  BOOST_STATIC_CONSTANT(IntType, increment = c); -  BOOST_STATIC_CONSTANT(IntType, modulus = m); - -  // MSVC 6 and possibly others crash when encountering complicated integral -  // constant expressions.  Avoid the check for now. -  // BOOST_STATIC_ASSERT(m == 0 || a < m); -  // BOOST_STATIC_ASSERT(m == 0 || c < m); - -  /** -   * Constructs a linear_congruential generator, seeding it with @c x0. -   */ -  explicit linear_congruential(IntType x0 = 1) -  {  -    seed(x0); - -    // MSVC fails BOOST_STATIC_ASSERT with std::numeric_limits at class scope -#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS -    BOOST_STATIC_ASSERT(std::numeric_limits<IntType>::is_integer); -#endif -  } - -  /** -   * Constructs a @c linear_congruential generator 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(It& first, It last) -  { -      seed(first, last); -  } - -  // compiler-generated copy constructor and assignment operator are fine - -  /** -   * 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). -   */ -  void seed(IntType x0 = 1) -  { -    // 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; -    } -    assert(_x >= (min)()); -    assert(_x <= (max)()); -  } - -  /** -   * seeds a @c linear_congruential generator 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) -  { -    if(first == last) -      throw std::invalid_argument("linear_congruential::seed"); -    seed(*first++); -  } - -  /** -   * Returns the smallest value that the @c linear_congruential generator -   * can produce. -   */ -  result_type min BOOST_PREVENT_MACRO_SUBSTITUTION () const { return c == 0 ? 1 : 0; } -  /** -   * Returns the largest value that the @c linear_congruential generator -   * can produce. -   */ -  result_type max BOOST_PREVENT_MACRO_SUBSTITUTION () const { return modulus-1; } - -  /** Returns the next value of the @c linear_congruential generator. */ -  IntType operator()() -  { -    _x = const_mod<IntType, m>::mult_add(a, _x, c); -    return _x; -  } - -  static bool validation(IntType x) { return val == x; } - -#ifdef BOOST_NO_OPERATORS_IN_NAMESPACE -     -  // Use a member function; Streamable concept not supported. -  bool operator==(const linear_congruential& rhs) const -  { return _x == rhs._x; } -  bool operator!=(const linear_congruential& rhs) const -  { return !(*this == rhs); } - -#else  -  friend bool operator==(const linear_congruential& x, -                         const linear_congruential& y) -  { return x._x == y._x; } -  friend bool operator!=(const linear_congruential& x, -                         const linear_congruential& y) -  { return !(x == y); } -     -#if !defined(BOOST_RANDOM_NO_STREAM_OPERATORS) && !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551)) -  template<class CharT, class Traits> -  friend std::basic_ostream<CharT,Traits>& -  operator<<(std::basic_ostream<CharT,Traits>& os, -             const linear_congruential& lcg) -  { -    return os << lcg._x; -  } - -  template<class CharT, class Traits> -  friend std::basic_istream<CharT,Traits>& -  operator>>(std::basic_istream<CharT,Traits>& is, -             linear_congruential& lcg) -  { -    return is >> lcg._x; -  } -  -private: -#endif -#endif - -  IntType _x; -}; - -// probably needs the "no native streams" caveat for STLPort -#if !defined(__SGI_STL_PORT) && BOOST_WORKAROUND(__GNUC__, == 2) -template<class IntType, IntType a, IntType c, IntType m, IntType val> -std::ostream& -operator<<(std::ostream& os, -           const linear_congruential<IntType,a,c,m,val>& lcg) -{ -    return os << lcg._x; -} - -template<class IntType, IntType a, IntType c, IntType m, IntType val> -std::istream& -operator>>(std::istream& is, -           linear_congruential<IntType,a,c,m,val>& lcg) -{ -    return is >> lcg._x; -} -#elif defined(BOOST_RANDOM_NO_STREAM_OPERATORS) || BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551)) -template<class CharT, class Traits, class IntType, IntType a, IntType c, IntType m, IntType val> -std::basic_ostream<CharT,Traits>& -operator<<(std::basic_ostream<CharT,Traits>& os, -           const linear_congruential<IntType,a,c,m,val>& lcg) -{ -    return os << lcg._x; -} - -template<class CharT, class Traits, class IntType, IntType a, IntType c, IntType m, IntType val> -std::basic_istream<CharT,Traits>& -operator>>(std::basic_istream<CharT,Traits>& is, -           linear_congruential<IntType,a,c,m,val>& lcg) -{ -    return is >> lcg._x; -} -#endif - -#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION -//  A definition is required even for integral static constants -template<class IntType, IntType a, IntType c, IntType m, IntType val> -const bool linear_congruential<IntType, a, c, m, val>::has_fixed_range; -template<class IntType, IntType a, IntType c, IntType m, IntType val> -const typename linear_congruential<IntType, a, c, m, val>::result_type linear_congruential<IntType, a, c, m, val>::min_value; -template<class IntType, IntType a, IntType c, IntType m, IntType val> -const typename linear_congruential<IntType, a, c, m, val>::result_type linear_congruential<IntType, a, c, m, val>::max_value; -template<class IntType, IntType a, IntType c, IntType m, IntType val> -const IntType linear_congruential<IntType,a,c,m,val>::modulus; -#endif - -} // namespace random - -// validation values from the publications -/** - * 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 random::linear_congruential<int32_t, 16807, 0, 2147483647,  -  1043618065> 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 random::linear_congruential<int32_t, 48271, 0, 2147483647, -  399268537> minstd_rand; - - -#if !defined(BOOST_NO_INT64_T) && !defined(BOOST_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 int32_t result_type; -#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION -  static const bool has_fixed_range = true; -  static const int32_t min_value = 0; -  static const int32_t max_value = integer_traits<int32_t>::const_max; -#else -  enum { has_fixed_range = false }; -#endif -  /** -   * Returns the smallest value that the generator can produce -   */ -  int32_t min BOOST_PREVENT_MACRO_SUBSTITUTION () const { return 0; } -  /** -   * Returns the largest value that the generator can produce -   */ -  int32_t max BOOST_PREVENT_MACRO_SUBSTITUTION () const { return std::numeric_limits<int32_t>::max BOOST_PREVENT_MACRO_SUBSTITUTION (); } -   -#ifdef BOOST_RANDOM_DOXYGEN -  /** -   * If T is an integral type smaller than int46_t, constructs -   * a \rand48 generator with x(0) := (x0 << 16) | 0x330e.  Otherwise -   * constructs a \rand48 generator with x(0) = x0. -   */ -  template<class T> explicit rand48(T x0 = 1); -#else -  rand48() : lcf(cnv(static_cast<int32_t>(1))) {} -  template<class T> explicit rand48(T x0) : lcf(cnv(x0)) { } -#endif -  template<class It> rand48(It& first, It last) : lcf(first, last) { } - -  // compiler-generated copy ctor and assignment operator are fine - -#ifdef BOOST_RANDOM_DOXYGEN -  /** -   * If T is an integral type smaller than int46_t, changes -   * the current value x(n) of the generator to (x0 << 16) | 0x330e. -   * Otherwise changes the current value x(n) to x0. -   */ -  template<class T> void seed(T x0 = 1); -#else -  void seed() { seed(static_cast<int32_t>(1)); } -  template<class T> void seed(T x0) { lcf.seed(cnv(x0)); } -#endif -  template<class It> void seed(It& first, It last) { lcf.seed(first,last); } - -  /** -   * Returns the next value of the generator. -   */ -  int32_t operator()() { return static_cast<int32_t>(lcf() >> 17); } -  // by experiment from lrand48() -  static bool validation(int32_t x) { return x == 1993516219; } - -#ifndef BOOST_NO_OPERATORS_IN_NAMESPACE - -#ifndef BOOST_RANDOM_NO_STREAM_OPERATORS -  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; } - -  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 - -  friend bool operator==(const rand48& x, const rand48& y) -  { return x.lcf == y.lcf; } -  friend bool operator!=(const rand48& x, const rand48& y) -  { return !(x == y); } -#else -  // Use a member function; Streamable concept not supported. -  bool operator==(const rand48& rhs) const -  { return lcf == rhs.lcf; } -  bool operator!=(const rand48& rhs) const -  { return !(*this == rhs); } -#endif -private: -  /// \cond hide_private_members -  random::linear_congruential<uint64_t, -    uint64_t(0xDEECE66DUL) | (uint64_t(0x5) << 32), // xxxxULL is not portable -    0xB, uint64_t(1)<<48, /* unknown */ 0> lcf; -  template<class T> -  static uint64_t cnv(T x)  -  { -    if(sizeof(T) < sizeof(uint64_t)) { -      return (static_cast<uint64_t>(x) << 16) | 0x330e; -    } else { -      return(static_cast<uint64_t>(x)); -    } -  } -  static uint64_t cnv(float x) { return(static_cast<uint64_t>(x)); } -  static uint64_t cnv(double x) { return(static_cast<uint64_t>(x)); } -  static uint64_t cnv(long double x) { return(static_cast<uint64_t>(x)); } -  /// \endcond -}; -#endif /* !BOOST_NO_INT64_T && !BOOST_NO_INTEGRAL_INT64_T */ - -} // namespace boost - -#include <boost/random/detail/enable_warnings.hpp> - -#endif // BOOST_RANDOM_LINEAR_CONGRUENTIAL_HPP | 
 Swift
 Swift