generate_canonical.pass.cpp [plain text]
#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))));
}
}