f5256e16df
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103516 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <random>
|
|
|
|
// template <class UIntType, UIntType a, UIntType c, UIntType m>
|
|
// class linear_congruential_engine
|
|
// {
|
|
// public:
|
|
// engine characteristics
|
|
// static constexpr result_type multiplier = a;
|
|
// static constexpr result_type increment = c;
|
|
// static constexpr result_type modulus = m;
|
|
// static constexpr result_type min() { return c == 0u ? 1u: 0u;}
|
|
// static constexpr result_type max() { return m - 1u;}
|
|
// static constexpr result_type default_seed = 1u;
|
|
|
|
#include <random>
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
|
|
template <class T, T a, T c, T m>
|
|
void
|
|
test1()
|
|
{
|
|
typedef std::linear_congruential_engine<T, a, c, m> LCE;
|
|
typedef typename LCE::result_type result_type;
|
|
static_assert((LCE::multiplier == a), "");
|
|
static_assert((LCE::increment == c), "");
|
|
static_assert((LCE::modulus == m), "");
|
|
/*static_*/assert((LCE::min() == (c == 0u ? 1u: 0u))/*, ""*/);
|
|
/*static_*/assert((LCE::max() == result_type(m - 1u))/*, ""*/);
|
|
static_assert((LCE::default_seed == 1), "");
|
|
}
|
|
|
|
template <class T>
|
|
void
|
|
test()
|
|
{
|
|
test1<T, 0, 0, 0>();
|
|
test1<T, 0, 1, 2>();
|
|
test1<T, 1, 1, 2>();
|
|
const T M(~0);
|
|
test1<T, 0, 0, M>();
|
|
test1<T, 0, M-2, M>();
|
|
test1<T, 0, M-1, M>();
|
|
test1<T, M-2, 0, M>();
|
|
test1<T, M-2, M-2, M>();
|
|
test1<T, M-2, M-1, M>();
|
|
test1<T, M-1, 0, M>();
|
|
test1<T, M-1, M-2, M>();
|
|
test1<T, M-1, M-1, M>();
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test<unsigned short>();
|
|
test<unsigned int>();
|
|
test<unsigned long>();
|
|
test<unsigned long long>();
|
|
}
|