[libcxx] Add <experimental/ratio>

Summary:
This patch is pretty simple. It just adds the _v traits from <ratio>. 

The draft can be found here.

Reviewers: jroelofs, K-ballo, mclow.lists

Reviewed By: mclow.lists

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D7351

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@229509 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier 2015-02-17 16:52:03 +00:00
parent 19efe015fb
commit 13b96fdfbd
11 changed files with 481 additions and 0 deletions

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// -*- C++ -*-
//===------------------------------ ratio ---------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_EXPERIMENTAL_RATIO
#define _LIBCPP_EXPERIMENTAL_RATIO
/**
experimental/ratio synopsis
C++1y
#include <ratio>
namespace std {
namespace experimental {
inline namespace fundamentals_v1 {
// See C++14 20.11.5, ratio comparison
template <class R1, class R2> constexpr bool ratio_equal_v
= ratio_equal<R1, R2>::value;
template <class R1, class R2> constexpr bool ratio_not_equal_v
= ratio_not_equal<R1, R2>::value;
template <class R1, class R2> constexpr bool ratio_less_v
= ratio_less<R1, R2>::value;
template <class R1, class R2> constexpr bool ratio_less_equal_v
= ratio_less_equal<R1, R2>::value;
template <class R1, class R2> constexpr bool ratio_greater_v
= ratio_greater<R1, R2>::value;
template <class R1, class R2> constexpr bool ratio_greater_equal_v
= ratio_greater_equal<R1, R2>::value;
} // namespace fundamentals_v1
} // namespace experimental
} // namespace std
*/
#include <experimental/__config>
#if _LIBCPP_STD_VER > 11
#include <ratio>
_LIBCPP_BEGIN_NAMESPACE_LFTS
#if __has_feature(cxx_variable_templates)
template <class _R1, class _R2> _LIBCPP_CONSTEXPR bool ratio_equal_v
= ratio_equal<_R1, _R2>::value;
template <class _R1, class _R2> _LIBCPP_CONSTEXPR bool ratio_not_equal_v
= ratio_not_equal<_R1, _R2>::value;
template <class _R1, class _R2> _LIBCPP_CONSTEXPR bool ratio_less_v
= ratio_less<_R1, _R2>::value;
template <class _R1, class _R2> _LIBCPP_CONSTEXPR bool ratio_less_equal_v
= ratio_less_equal<_R1, _R2>::value;
template <class _R1, class _R2> _LIBCPP_CONSTEXPR bool ratio_greater_v
= ratio_greater<_R1, _R2>::value;
template <class _R1, class _R2> _LIBCPP_CONSTEXPR bool ratio_greater_equal_v
= ratio_greater_equal<_R1, _R2>::value;
#endif /* __has_feature(cxx_variable_templates) */
_LIBCPP_END_NAMESPACE_LFTS
#endif /* _LIBCPP_STD_VER > 11 */
#endif _LIBCPP_EXPERIMENTAL_RATIO

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// <experimental/ratio>
// Test that <ratio> is included.
#include <experimental/ratio>
#ifndef _LIBCPP_STD_VER > 11
# ifndef _LIBCPP_RATIO
# error " <experimental/ratio> must include <ratio>"
# endif
#endif
int main()
{
}

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// <experimental/ratio>
#include <experimental/ratio>
#ifndef _LIBCPP_VERSION
#error _LIBCPP_VERSION not defined
#endif
int main()
{
}

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11
// <experimental/ratio>
// Test that <ratio> is included.
#include <experimental/ratio>
int main()
{
std::ratio<100> x;
}

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11
// <experimental/ratio>
// template <class R1, class R2> constexpr bool ratio_equal_v;
#include <experimental/ratio>
#include <type_traits>
namespace ex = std::experimental;
int main()
{
{
typedef std::ratio<1, 1> R1;
typedef std::ratio<1, 1> R2;
static_assert(
ex::ratio_equal_v<R1, R2>, ""
);
static_assert(
ex::ratio_equal_v<R1, R2> == std::ratio_equal<R1, R2>::value, ""
);
static_assert(
std::is_same<decltype(ex::ratio_equal_v<R1, R2>), const bool>::value
, ""
);
}
{
typedef std::ratio<1, 1> R1;
typedef std::ratio<1, -1> R2;
static_assert(
!ex::ratio_equal_v<R1, R2>, ""
);
static_assert(
ex::ratio_equal_v<R1, R2> == std::ratio_equal<R1, R2>::value, ""
);
}
}

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11
// <experimental/ratio>
// template <class R1, class R2> constexpr bool ratio_greater_equal_v;
#include <experimental/ratio>
#include <type_traits>
namespace ex = std::experimental;
int main()
{
{
typedef std::ratio<1, 2> R1;
typedef std::ratio<1, 1> R2;
static_assert(
!ex::ratio_greater_equal_v<R1, R2>, ""
);
static_assert(
ex::ratio_greater_equal_v<R1, R2>
== std::ratio_greater_equal<R1, R2>::value, ""
);
static_assert(
std::is_same<
decltype(ex::ratio_greater_equal_v<R1, R2>), const bool>::value
, ""
);
}
{
typedef std::ratio<1, 1> R1;
typedef std::ratio<1, 1> R2;
static_assert(
ex::ratio_greater_equal_v<R1, R2>, ""
);
static_assert(
ex::ratio_greater_equal_v<R1, R2>
== std::ratio_greater_equal<R1, R2>::value, ""
);
}
{
typedef std::ratio<2, 1> R1;
typedef std::ratio<1, 1> R2;
static_assert(
ex::ratio_greater_equal_v<R1, R2>, ""
);
static_assert(
ex::ratio_greater_equal_v<R1, R2>
== std::ratio_greater_equal<R1, R2>::value, ""
);
}
}

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11
// <experimental/ratio>
// template <class R1, class R2> constexpr bool ratio_greater_v;
#include <experimental/ratio>
#include <type_traits>
namespace ex = std::experimental;
int main()
{
{
typedef std::ratio<1, 2> R1;
typedef std::ratio<1, 1> R2;
static_assert(
!ex::ratio_greater_v<R1, R2>, ""
);
static_assert(
ex::ratio_greater_v<R1, R2> == std::ratio_greater<R1, R2>::value, ""
);
static_assert(
std::is_same<decltype(ex::ratio_greater_v<R1, R2>), const bool>::value
, ""
);
}
{
typedef std::ratio<1, 1> R1;
typedef std::ratio<1, 1> R2;
static_assert(
!ex::ratio_greater_v<R1, R2>, ""
);
static_assert(
ex::ratio_greater_v<R1, R2> == std::ratio_greater<R1, R2>::value, ""
);
}
{
typedef std::ratio<2, 1> R1;
typedef std::ratio<1, 1> R2;
static_assert(
ex::ratio_greater_v<R1, R2>, ""
);
static_assert(
ex::ratio_greater_v<R1, R2> == std::ratio_greater<R1, R2>::value, ""
);
}
}

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11
// <experimental/ratio>
// template <class R1, class R2> constexpr bool ratio_less_equal_v;
#include <experimental/ratio>
#include <type_traits>
namespace ex = std::experimental;
int main()
{
{
typedef std::ratio<1, 2> R1;
typedef std::ratio<1, 1> R2;
static_assert(
ex::ratio_less_equal_v<R1, R2>, ""
);
static_assert(
ex::ratio_less_equal_v<R1, R2> == std::ratio_less_equal<R1, R2>::value, ""
);
static_assert(
std::is_same<decltype(ex::ratio_less_equal_v<R1, R2>), const bool>::value
, ""
);
}
{
typedef std::ratio<1, 1> R1;
typedef std::ratio<1, 1> R2;
static_assert(
ex::ratio_less_equal_v<R1, R2>, ""
);
static_assert(
ex::ratio_less_equal_v<R1, R2> == std::ratio_less_equal<R1, R2>::value, ""
);
}
{
typedef std::ratio<2, 1> R1;
typedef std::ratio<1, 1> R2;
static_assert(
!ex::ratio_less_equal_v<R1, R2>, ""
);
static_assert(
ex::ratio_less_equal_v<R1, R2> == std::ratio_less_equal<R1, R2>::value, ""
);
}
}

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11
// <experimental/ratio>
// template <class R1, class R2> constexpr bool ratio_less_v;
#include <experimental/ratio>
#include <type_traits>
namespace ex = std::experimental;
int main()
{
{
typedef std::ratio<1, 2> R1;
typedef std::ratio<1, 1> R2;
static_assert(
ex::ratio_less_v<R1, R2>, ""
);
static_assert(
ex::ratio_less_v<R1, R2> == std::ratio_less<R1, R2>::value, ""
);
static_assert(
std::is_same<decltype(ex::ratio_less_v<R1, R2>), const bool>::value
, ""
);
}
{
typedef std::ratio<1, 1> R1;
typedef std::ratio<1, 1> R2;
static_assert(
!ex::ratio_less_v<R1, R2>, ""
);
static_assert(
ex::ratio_less_v<R1, R2> == std::ratio_less<R1, R2>::value, ""
);
}
{
typedef std::ratio<2, 1> R1;
typedef std::ratio<1, 1> R2;
static_assert(
!ex::ratio_less_v<R1, R2>, ""
);
static_assert(
ex::ratio_less_v<R1, R2> == std::ratio_less<R1, R2>::value, ""
);
}
}

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11
// <experimental/ratio>
// template <class R1, class R2> constexpr bool ratio_not_equal_v;
#include <experimental/ratio>
#include <type_traits>
namespace ex = std::experimental;
int main()
{
{
typedef std::ratio<1, 1> R1;
typedef std::ratio<1, -1> R2;
static_assert(
ex::ratio_not_equal_v<R1, R2>, ""
);
static_assert(
ex::ratio_not_equal_v<R1, R2> == std::ratio_not_equal<R1, R2>::value, ""
);
static_assert(
std::is_same<decltype(ex::ratio_not_equal_v<R1, R2>), const bool>::value
, ""
);
}
{
typedef std::ratio<1, 1> R1;
typedef std::ratio<1, 1> R2;
static_assert(
!ex::ratio_not_equal_v<R1, R2>, ""
);
static_assert(
ex::ratio_not_equal_v<R1, R2> == std::ratio_not_equal<R1, R2>::value, ""
);
}
}

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// -*- 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.
//
//===----------------------------------------------------------------------===//
int main()
{
}