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libcxx initial import

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
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Howard Hinnant
2010-05-11 19:42:16 +00:00
commit bc8d3f97eb
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102
test/numerics/rand/rand.util/rand.util.canonical/generate_canonical.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <random>
// template<class RealType, size_t bits, class URNG>
// RealType generate_canonical(URNG& g);
#include <random>
#include <cassert>
#include <iostream>
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))));
}
}