b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <random>
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// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
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// UIntType a, size_t u, UIntType d, size_t s,
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// UIntType b, size_t t, UIntType c, size_t l, UIntType f>
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// class mersenne_twister_engine
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// {
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// public:
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// // types
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// typedef UIntType result_type;
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//
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// // engine characteristics
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// static constexpr size_t word_size = w;
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// static constexpr size_t state_size = n;
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// static constexpr size_t shift_size = m;
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// static constexpr size_t mask_bits = r;
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// static constexpr result_type xor_mask = a;
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// static constexpr size_t tempering_u = u;
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// static constexpr result_type tempering_d = d;
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// static constexpr size_t tempering_s = s;
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// static constexpr result_type tempering_b = b;
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// static constexpr size_t tempering_t = t;
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// static constexpr result_type tempering_c = c;
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// static constexpr size_t tempering_l = l;
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// static constexpr result_type initialization_multiplier = f;
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// static constexpr result_type min () { return 0; }
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// static constexpr result_type max() { return 2^w - 1; }
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// static constexpr result_type default_seed = 5489u;
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#include <random>
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#include <type_traits>
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#include <cassert>
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void
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test1()
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{
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typedef std::mt19937 E;
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static_assert((E::word_size == 32), "");
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static_assert((E::state_size == 624), "");
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static_assert((E::shift_size == 397), "");
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static_assert((E::mask_bits == 31), "");
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static_assert((E::xor_mask == 0x9908b0df), "");
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static_assert((E::tempering_u == 11), "");
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static_assert((E::tempering_d == 0xffffffff), "");
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static_assert((E::tempering_s == 7), "");
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static_assert((E::tempering_b == 0x9d2c5680), "");
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static_assert((E::tempering_t == 15), "");
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static_assert((E::tempering_c == 0xefc60000), "");
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static_assert((E::tempering_l == 18), "");
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static_assert((E::initialization_multiplier == 1812433253), "");
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/*static_*/assert((E::min() == 0)/*, ""*/);
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/*static_*/assert((E::max() == 0xFFFFFFFF)/*, ""*/);
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static_assert((E::default_seed == 5489u), "");
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}
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void
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test2()
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{
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typedef std::mt19937_64 E;
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static_assert((E::word_size == 64), "");
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static_assert((E::state_size == 312), "");
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static_assert((E::shift_size == 156), "");
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static_assert((E::mask_bits == 31), "");
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static_assert((E::xor_mask == 0xb5026f5aa96619e9ull), "");
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static_assert((E::tempering_u == 29), "");
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static_assert((E::tempering_d == 0x5555555555555555ull), "");
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static_assert((E::tempering_s == 17), "");
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static_assert((E::tempering_b == 0x71d67fffeda60000ull), "");
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static_assert((E::tempering_t == 37), "");
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static_assert((E::tempering_c == 0xfff7eee000000000ull), "");
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static_assert((E::tempering_l == 43), "");
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static_assert((E::initialization_multiplier == 6364136223846793005ull), "");
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/*static_*/assert((E::min() == 0)/*, ""*/);
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/*static_*/assert((E::max() == 0xFFFFFFFFFFFFFFFFull)/*, ""*/);
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static_assert((E::default_seed == 5489u), "");
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}
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int main()
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{
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test1();
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test2();
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}
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