tr2/ratio
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// TR2 <ratio> -*- C++ -*-
// Copyright (C) 2010-2025 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file tr2/ratio
* This is a TR2 C++ Library header.
*/
#include <ratio>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
namespace tr2
{
template<intmax_t _Pn, size_t _Bit,
bool = _Bit < static_cast<size_t>
(std::numeric_limits<intmax_t>::digits)>
struct __safe_lshift
{ static const intmax_t __value = 0; };
template<intmax_t _Pn, size_t _Bit>
struct __safe_lshift<_Pn, _Bit, true>
{ static const intmax_t __value = _Pn << _Bit; };
/// Add binary prefixes (IEC 60027-2 A.2 and ISO/IEC 80000).
typedef ratio<__safe_lshift<1, 10>::__value, 1> kibi;
typedef ratio<__safe_lshift<1, 20>::__value, 1> mebi;
typedef ratio<__safe_lshift<1, 30>::__value, 1> gibi;
typedef ratio<__safe_lshift<1, 40>::__value, 1> tebi;
typedef ratio<__safe_lshift<1, 50>::__value, 1> pebi;
typedef ratio<__safe_lshift<1, 60>::__value, 1> exbi;
//typedef ratio<__safe_lshift<1, 70>::__value, 1> zebi;
//typedef ratio<__safe_lshift<1, 80>::__value, 1> yobi;
}
_GLIBCXX_END_NAMESPACE_VERSION
}
std
ISO C++ entities toplevel namespace is std.
std::tr2
Namespace for non-standard "TR2" extensions.
std::__numeric_limits_base::digits
static constexpr int digits
Definition limits:218
ratio