Standard library header (C++11) (original) (raw)
This header is part of the compile-time rational arithmetic library.
| Type Aliases | |
|---|---|
| quecto (C++26) | std::ratio<1, 1000000000000000000000000000000>, if std::intmax_t can represent the denominator |
| ronto (C++26) | std::ratio<1, 1000000000000000000000000000>, if std::intmax_t can represent the denominator |
| yocto | std::ratio<1, 1000000000000000000000000>, if std::intmax_t can represent the denominator |
| zepto | std::ratio<1, 1000000000000000000000>, if std::intmax_t can represent the denominator |
| atto | std::ratio<1, 1000000000000000000> |
| femto | std::ratio<1, 1000000000000000> |
| pico | std::ratio<1, 1000000000000> |
| nano | std::ratio<1, 1000000000> |
| micro | std::ratio<1, 1000000> |
| milli | std::ratio<1, 1000> |
| centi | std::ratio<1, 100> |
| deci | std::ratio<1, 10> |
| deca | std::ratio<10, 1> |
| hecto | std::ratio<100, 1> |
| kilo | std::ratio<1000, 1> |
| mega | std::ratio<1000000, 1> |
| giga | std::ratio<1000000000, 1> |
| tera | std::ratio<1000000000000, 1> |
| peta | std::ratio<1000000000000000, 1> |
| exa | std::ratio<1000000000000000000, 1> |
| zetta | std::ratio<1000000000000000000000, 1>, if std::intmax_t can represent the numerator |
| yotta | std::ratio<1000000000000000000000000, 1>, if std::intmax_t can represent the numerator |
| ronna (C++26) | std::ratio<1000000000000000000000000000, 1>, if std::intmax_t can represent the numerator |
| quetta (C++26) | std::ratio<1000000000000000000000000000000, 1>, if std::intmax_t can represent the numerator |
[edit] Synopsis
namespace std {
// class template ratio
template <intmax_t N, intmax_t D = 1>
class ratio {
public:
typedef ratio<num, den> type;
static constexpr intmax_t num;
static constexpr intmax_t den;
};
// ratio arithmetic
template <class R1, class R2> using ratio_add = /ratio/;
template <class R1, class R2> using ratio_subtract = /ratio/;
template <class R1, class R2> using ratio_multiply = /ratio/;
template <class R1, class R2> using ratio_divide = /ratio/;
// 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
typedef ratio<1, 1000000000000000000000000000000> quecto;
typedef ratio<1, 1000000000000000000000000000> ronto;
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;
typedef ratio< 1000000000000000000000000000, 1> ronna;
typedef ratio<1000000000000000000000000000000, 1> quetta;
}