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/* Copyright (C) 2015 Povilas Kanapickas <povilas@radix.lt>
This file is part of cppreference-doc
This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
Unported License. To view a copy of this license, visit
http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to Creative
Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with no
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
*/
#ifndef CPPREFERENCE_RATIO_H
#define CPPREFERENCE_RATIO_H
#if CPPREFERENCE_STDVER>= 2011
#include <cstdint>
#include <type_traits>
namespace std {
template<std::intmax_t Num,
std::intmax_t Denom = 1>
struct ratio {
public:
typedef ratio<Num, Denom> type;
static constexpr intmax_t num;
static constexpr intmax_t den;
};
typedef ratio<1, 1000000000000000000000000> yocto;
typedef ratio<1, 1000000000000000000000> zepto;
typedef ratio<1, 1000000000000000000> atto;
typedef ratio<1, 1000000000000000> femto;
typedef ratio<1, 1000000000000> pico;
typedef ratio<1, 1000000000> nano;
typedef ratio<1, 1000000> micro;
typedef ratio<1, 1000> milli;
typedef ratio<1, 100> centi;
typedef ratio<1, 10> deci;
typedef ratio< 10, 1> deca;
typedef ratio< 100, 1> hecto;
typedef ratio< 1000, 1> kilo;
typedef ratio< 1000000, 1> mega;
typedef ratio< 1000000000, 1> giga;
typedef ratio< 1000000000000, 1> tera;
typedef ratio< 1000000000000000, 1> peta;
typedef ratio< 1000000000000000000, 1> exa;
typedef ratio< 1000000000000000000000, 1> zetta;
typedef ratio<1000000000000000000000000, 1> yotta;
// SIMPLIFIED: the following are alias templates
template<class R1, class R2>
class ratio_add : public ratio<1, 1> {};
template<class R1, class R2>
class ratio_subtract : public ratio<1, 1> {};
template<class R1, class R2>
class ratio_divide : public ratio<1, 1> {};
template<class R1, class R2>
class ratio_multiply : public ratio<1, 1> {};
// SIMPLIFIED: the following inherit from different specialization
// of std::integral_constant
template<class R1, class R2>
struct ratio_equal : std::integral_constant<bool, true> {};
template<class R1, class R2>
struct ratio_not_equal : std::integral_constant<bool, true> {};
template<class R1, class R2>
struct ratio_less : std::integral_constant<bool, true> {};
template<class R1, class R2>
struct ratio_less_equal : std::integral_constant<bool, true> {};
template<class R1, class R2>
struct ratio_greater : std::integral_constant<bool, true> {};
template<class R1, class R2>
struct ratio_greater_equal : std::integral_constant<bool, true> {};
} // namespace std
#endif // CPPREFERENCE_STDVER>= 2011
#endif // CPPREFERENCE_RATIO_H
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