ratio | Explore in Territory

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_RATIO
#define _LIBCPP_RATIO

/*
    ratio synopsis

namespace std
{

template <intmax_t N, intmax_t D = 1>
class ratio
{
public:
    static constexpr intmax_t num;
    static constexpr intmax_t den;
    typedef ratio<num, den> type;
};

// ratio arithmetic
template <class R1, class R2> using ratio_add = ...;
template <class R1, class R2> using ratio_subtract = ...;
template <class R1, class R2> using ratio_multiply = ...;
template <class R1, class R2> using ratio_divide = ...;

// ratio comparison
template <class R1, class R2> struct ratio_equal;
template <class R1, class R2> struct ratio_not_equal;
template <class R1, class R2> struct ratio_less;
template <class R1, class R2> struct ratio_less_equal;
template <class R1, class R2> struct ratio_greater;
template <class R1, class R2> struct ratio_greater_equal;

// convenience SI typedefs
using quecto = ratio <1, 1'000'000'000'000'000'000'000'000'000'000>; // Since C++26; not supported
using ronto = ratio <1, 1'000'000'000'000'000'000'000'000'000>;      // Since C++26; not supported
typedef ratio<1, 1000000000000000000000000> yocto;  // not supported
typedef ratio<1,    1000000000000000000000> zepto;  // not supported
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;  // not supported
typedef ratio<1000000000000000000000000, 1> yotta;  // not supported
using ronna = ratio <1'000'000'000'000'000'000'000'000'000, 1>;      // Since C++26; not supported
using quetta = ratio <1'000'000'000'000'000'000'000'000'000'000, 1>; // Since C++26; not supported

  // 20.11.5, ratio comparison
  template <class R1, class R2> inline constexpr bool ratio_equal_v
    = ratio_equal<R1, R2>::value;                                       // C++17
  template <class R1, class R2> inline constexpr bool ratio_not_equal_v
    = ratio_not_equal<R1, R2>::value;                                   // C++17
  template <class R1, class R2> inline constexpr bool ratio_less_v
    = ratio_less<R1, R2>::value;                                        // C++17
  template <class R1, class R2> inline constexpr bool ratio_less_equal_v
    = ratio_less_equal<R1, R2>::value;                                  // C++17
  template <class R1, class R2> inline constexpr bool ratio_greater_v
    = ratio_greater<R1, R2>::value;                                     // C++17
  template <class R1, class R2> inline constexpr bool ratio_greater_equal_v
    = ratio_greater_equal<R1, R2>::value;                               // C++17
}
*/

#include <__config>
#include <__type_traits/integral_constant.h>
#include <climits>
#include <cstdint>
#include <version>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

_LIBCPP_PUSH_MACROS
#include <__undef_macros>

_LIBCPP_BEGIN_NAMESPACE_STD

// __static_gcd

template <intmax_t _Xp, intmax_t _Yp>
struct __static_gcd { … };

__static_gcd<_Xp, 0>;

template <>
struct __static_gcd<0, 0> { … };

// __static_lcm

template <intmax_t _Xp, intmax_t _Yp>
struct __static_lcm { … };

template <intmax_t _Xp>
struct __static_abs { … };

template <intmax_t _Xp>
struct __static_sign { … };

template <intmax_t _Xp, intmax_t _Yp, intmax_t = __static_sign<_Yp>::value>
class __ll_add;

__ll_add<_Xp, _Yp, 1>;

__ll_add<_Xp, _Yp, 0>;

__ll_add<_Xp, _Yp, -1>;

template <intmax_t _Xp, intmax_t _Yp, intmax_t = __static_sign<_Yp>::value>
class __ll_sub;

__ll_sub<_Xp, _Yp, 1>;

__ll_sub<_Xp, _Yp, 0>;

__ll_sub<_Xp, _Yp, -1>;

template <intmax_t _Xp, intmax_t _Yp>
class __ll_mul { … };

__ll_mul<0, _Yp>;

__ll_mul<_Xp, 0>;

template <>
class __ll_mul<0, 0> { … };

// Not actually used but left here in case needed in future maintenance
template <intmax_t _Xp, intmax_t _Yp>
class __ll_div { … };

template <intmax_t _Num, intmax_t _Den = 1>
class _LIBCPP_TEMPLATE_VIS ratio { … };

template <intmax_t _Num, intmax_t _Den>
_LIBCPP_CONSTEXPR const intmax_t ratio<_Num, _Den>::num;

template <intmax_t _Num, intmax_t _Den>
_LIBCPP_CONSTEXPR const intmax_t ratio<_Num, _Den>::den;

template <class _Tp>
struct __is_ratio : false_type { … };
__is_ratio<ratio<_Num, _Den>>;

atto;
femto;
pico;
nano;
micro;
milli;
centi;
deci;
deca;
hecto;
kilo;
mega;
giga;
tera;
peta;
exa;

template <class _R1, class _R2>
struct __ratio_multiply { … };

#ifndef _LIBCPP_CXX03_LANG

ratio_multiply;

#else // _LIBCPP_CXX03_LANG

template <class _R1, class _R2>
struct _LIBCPP_TEMPLATE_VIS ratio_multiply : public __ratio_multiply<_R1, _R2>::type {};

#endif // _LIBCPP_CXX03_LANG

template <class _R1, class _R2>
struct __ratio_divide { … };

#ifndef _LIBCPP_CXX03_LANG

ratio_divide;

#else // _LIBCPP_CXX03_LANG

template <class _R1, class _R2>
struct _LIBCPP_TEMPLATE_VIS ratio_divide : public __ratio_divide<_R1, _R2>::type {};

#endif // _LIBCPP_CXX03_LANG

template <class _R1, class _R2>
struct __ratio_add { … };

#ifndef _LIBCPP_CXX03_LANG

ratio_add;

#else // _LIBCPP_CXX03_LANG

template <class _R1, class _R2>
struct _LIBCPP_TEMPLATE_VIS ratio_add : public __ratio_add<_R1, _R2>::type {};

#endif // _LIBCPP_CXX03_LANG

template <class _R1, class _R2>
struct __ratio_subtract { … };

#ifndef _LIBCPP_CXX03_LANG

ratio_subtract;

#else // _LIBCPP_CXX03_LANG

template <class _R1, class _R2>
struct _LIBCPP_TEMPLATE_VIS ratio_subtract : public __ratio_subtract<_R1, _R2>::type {};

#endif // _LIBCPP_CXX03_LANG

// ratio_equal

template <class _R1, class _R2>
struct _LIBCPP_TEMPLATE_VIS ratio_equal : _BoolConstant<(_R1::num == _R2::num && _R1::den == _R2::den)> { … };

template <class _R1, class _R2>
struct _LIBCPP_TEMPLATE_VIS ratio_not_equal : _BoolConstant<!ratio_equal<_R1, _R2>::value> { … };

// ratio_less

template <class _R1,
          class _R2,
          bool _Odd    = false,
          intmax_t _Q1 = _R1::num / _R1::den,
          intmax_t _M1 = _R1::num % _R1::den,
          intmax_t _Q2 = _R2::num / _R2::den,
          intmax_t _M2 = _R2::num % _R2::den>
struct __ratio_less1 { … };

__ratio_less1<_R1, _R2, _Odd, _Qp, 0, _Qp, 0>;

__ratio_less1<_R1, _R2, _Odd, _Qp, 0, _Qp, _M2>;

__ratio_less1<_R1, _R2, _Odd, _Qp, _M1, _Qp, 0>;

__ratio_less1<_R1, _R2, _Odd, _Qp, _M1, _Qp, _M2>;

template <class _R1,
          class _R2,
          intmax_t _S1 = __static_sign<_R1::num>::value,
          intmax_t _S2 = __static_sign<_R2::num>::value>
struct __ratio_less { … };

__ratio_less<_R1, _R2, 1LL, 1LL>;

__ratio_less<_R1, _R2, -1LL, -1LL>;

template <class _R1, class _R2>
struct _LIBCPP_TEMPLATE_VIS ratio_less : _BoolConstant<__ratio_less<_R1, _R2>::value> { … };

template <class _R1, class _R2>
struct _LIBCPP_TEMPLATE_VIS ratio_less_equal : _BoolConstant<!ratio_less<_R2, _R1>::value> { … };

template <class _R1, class _R2>
struct _LIBCPP_TEMPLATE_VIS ratio_greater : _BoolConstant<ratio_less<_R2, _R1>::value> { … };

template <class _R1, class _R2>
struct _LIBCPP_TEMPLATE_VIS ratio_greater_equal : _BoolConstant<!ratio_less<_R1, _R2>::value> { … };

template <class _R1, class _R2>
struct __ratio_gcd { … };

#if _LIBCPP_STD_VER >= 17
ratio_equal_v;

ratio_not_equal_v;

ratio_less_v;

ratio_less_equal_v;

ratio_greater_v;

ratio_greater_equal_v;
#endif

_LIBCPP_END_NAMESPACE_STD

_LIBCPP_POP_MACROS

#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
#  include <type_traits>
#endif

#endif // _LIBCPP_RATIO
chromium/third_party/libc++/src/include/ratio
