136 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <random>10 11// template <class UIntType, size_t w, size_t n, size_t m, size_t r,12// UIntType a, size_t u, UIntType d, size_t s,13// UIntType b, size_t t, UIntType c, size_t l, UIntType f>14// class mersenne_twister_engine15// {16// public:17// // types18// typedef UIntType result_type;19//20// // engine characteristics21// static constexpr size_t word_size = w;22// static constexpr size_t state_size = n;23// static constexpr size_t shift_size = m;24// static constexpr size_t mask_bits = r;25// static constexpr result_type xor_mask = a;26// static constexpr size_t tempering_u = u;27// static constexpr result_type tempering_d = d;28// static constexpr size_t tempering_s = s;29// static constexpr result_type tempering_b = b;30// static constexpr size_t tempering_t = t;31// static constexpr result_type tempering_c = c;32// static constexpr size_t tempering_l = l;33// static constexpr result_type initialization_multiplier = f;34// static constexpr result_type min () { return 0; }35// static constexpr result_type max() { return 2^w - 1; }36// static constexpr result_type default_seed = 5489u;37 38#include <random>39#include <type_traits>40#include <cassert>41 42#include "test_macros.h"43 44template <class T>45void where(const T &) {}46 47void48test1()49{50 typedef std::mt19937 E;51 static_assert((E::word_size == 32), "");52 static_assert((E::state_size == 624), "");53 static_assert((E::shift_size == 397), "");54 static_assert((E::mask_bits == 31), "");55 static_assert((E::xor_mask == 0x9908b0df), "");56 static_assert((E::tempering_u == 11), "");57 static_assert((E::tempering_d == 0xffffffff), "");58 static_assert((E::tempering_s == 7), "");59 static_assert((E::tempering_b == 0x9d2c5680), "");60 static_assert((E::tempering_t == 15), "");61 static_assert((E::tempering_c == 0xefc60000), "");62 static_assert((E::tempering_l == 18), "");63 static_assert((E::initialization_multiplier == 1812433253), "");64#if TEST_STD_VER >= 1165 static_assert((E::min() == 0), "");66 static_assert((E::max() == 0xFFFFFFFF), "");67#else68 assert((E::min() == 0));69 assert((E::max() == 0xFFFFFFFF));70#endif71 static_assert((E::default_seed == 5489u), "");72 where(E::word_size);73 where(E::state_size);74 where(E::shift_size);75 where(E::mask_bits);76 where(E::xor_mask);77 where(E::tempering_u);78 where(E::tempering_d);79 where(E::tempering_s);80 where(E::tempering_b);81 where(E::tempering_t);82 where(E::tempering_c);83 where(E::tempering_l);84 where(E::initialization_multiplier);85 where(E::default_seed);86}87 88void89test2()90{91 typedef std::mt19937_64 E;92 static_assert((E::word_size == 64), "");93 static_assert((E::state_size == 312), "");94 static_assert((E::shift_size == 156), "");95 static_assert((E::mask_bits == 31), "");96 static_assert((E::xor_mask == 0xb5026f5aa96619e9ull), "");97 static_assert((E::tempering_u == 29), "");98 static_assert((E::tempering_d == 0x5555555555555555ull), "");99 static_assert((E::tempering_s == 17), "");100 static_assert((E::tempering_b == 0x71d67fffeda60000ull), "");101 static_assert((E::tempering_t == 37), "");102 static_assert((E::tempering_c == 0xfff7eee000000000ull), "");103 static_assert((E::tempering_l == 43), "");104 static_assert((E::initialization_multiplier == 6364136223846793005ull), "");105#if TEST_STD_VER >= 11106 static_assert((E::min() == 0), "");107 static_assert((E::max() == 0xFFFFFFFFFFFFFFFFull), "");108#else109 assert((E::min() == 0));110 assert((E::max() == 0xFFFFFFFFFFFFFFFFull));111#endif112 static_assert((E::default_seed == 5489u), "");113 where(E::word_size);114 where(E::state_size);115 where(E::shift_size);116 where(E::mask_bits);117 where(E::xor_mask);118 where(E::tempering_u);119 where(E::tempering_d);120 where(E::tempering_s);121 where(E::tempering_b);122 where(E::tempering_t);123 where(E::tempering_c);124 where(E::tempering_l);125 where(E::initialization_multiplier);126 where(E::default_seed);127}128 129int main(int, char**)130{131 test1();132 test2();133 134 return 0;135}136