forked from OSchip/llvm-project
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <random>
|
|
|
|
// template<class RealType, size_t bits, class URNG>
|
|
// RealType generate_canonical(URNG& g);
|
|
|
|
#include <random>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
{
|
|
typedef std::minstd_rand0 E;
|
|
typedef float F;
|
|
E r;
|
|
F f = std::generate_canonical<F, 0>(r);
|
|
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
|
|
}
|
|
{
|
|
typedef std::minstd_rand0 E;
|
|
typedef float F;
|
|
E r;
|
|
F f = std::generate_canonical<F, 1>(r);
|
|
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
|
|
}
|
|
{
|
|
typedef std::minstd_rand0 E;
|
|
typedef float F;
|
|
E r;
|
|
F f = std::generate_canonical<F, std::numeric_limits<F>::digits - 1>(r);
|
|
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
|
|
}
|
|
{
|
|
typedef std::minstd_rand0 E;
|
|
typedef float F;
|
|
E r;
|
|
F f = std::generate_canonical<F, std::numeric_limits<F>::digits>(r);
|
|
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
|
|
}
|
|
{
|
|
typedef std::minstd_rand0 E;
|
|
typedef float F;
|
|
E r;
|
|
F f = std::generate_canonical<F, std::numeric_limits<F>::digits + 1>(r);
|
|
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
|
|
}
|
|
|
|
{
|
|
typedef std::minstd_rand0 E;
|
|
typedef double F;
|
|
E r;
|
|
F f = std::generate_canonical<F, 0>(r);
|
|
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
|
|
}
|
|
{
|
|
typedef std::minstd_rand0 E;
|
|
typedef double F;
|
|
E r;
|
|
F f = std::generate_canonical<F, 1>(r);
|
|
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
|
|
}
|
|
{
|
|
typedef std::minstd_rand0 E;
|
|
typedef double F;
|
|
E r;
|
|
F f = std::generate_canonical<F, std::numeric_limits<F>::digits - 1>(r);
|
|
assert(f ==
|
|
(16807 - E::min() +
|
|
(282475249 - E::min()) * (E::max() - E::min() + F(1))) /
|
|
((E::max() - E::min() + F(1)) * (E::max() - E::min() + F(1))));
|
|
}
|
|
{
|
|
typedef std::minstd_rand0 E;
|
|
typedef double F;
|
|
E r;
|
|
F f = std::generate_canonical<F, std::numeric_limits<F>::digits>(r);
|
|
assert(f ==
|
|
(16807 - E::min() +
|
|
(282475249 - E::min()) * (E::max() - E::min() + F(1))) /
|
|
((E::max() - E::min() + F(1)) * (E::max() - E::min() + F(1))));
|
|
}
|
|
{
|
|
typedef std::minstd_rand0 E;
|
|
typedef double F;
|
|
E r;
|
|
F f = std::generate_canonical<F, std::numeric_limits<F>::digits + 1>(r);
|
|
assert(f ==
|
|
(16807 - E::min() +
|
|
(282475249 - E::min()) * (E::max() - E::min() + F(1))) /
|
|
((E::max() - E::min() + F(1)) * (E::max() - E::min() + F(1))));
|
|
}
|
|
}
|