feedc0de/mp-units
1
0 Fork 0
forked from mpusz/mp-units
Code Pull Requests Activity

coherent_derived_unit and custom prefixes support added

Browse Source
This commit is contained in:
Mateusz Pusz committed 2019-10-17 10:16:44 +02:00
1 parent 9a9abca81d
commit 3e30c779a6
29 files changed
+261 -115
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

src/include/units/unit.h
+9 -24
View File
@@ -28,7 +28,7 @@
namespace units {
template<Dimension D, Ratio R = ratio<1>>
template<Dimension D, Ratio R>
requires (R::num * R::den > 0)
struct unit : downcast_base<unit<D, R>> {
using dimension = D;
@@ -141,14 +141,17 @@ namespace units {
// static constexpr auto symbol = Symbol;
// };
struct no_prefix;
template<typename Child, typename Symbol, Dimension D, typename Prefix = no_prefix>
struct coherent_derived_unit : downcast_helper<Child, unit<D, ratio<1>>> {
using symbol = Symbol;
using prefix = Prefix;
};
template<typename Child, typename Symbol, typename...>
struct derived_unit;
template<typename Child, typename Symbol, Dimension D>
struct derived_unit<Child, Symbol, D> : downcast_helper<Child, unit<D, ratio<1>>> {
using symbol = Symbol;
};
template<typename Child, typename Symbol, Dimension D, Ratio R>
struct derived_unit<Child, Symbol, D, R> : downcast_helper<Child, unit<D, R>> {
using symbol = Symbol;
@@ -164,22 +167,4 @@ namespace units {
using symbol = Symbol;
};
// SI prefixes
template<Unit U> using atto = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<1, std::atto::den>>>;
template<Unit U> using femto = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<1, std::femto::den>>>;
template<Unit U> using pico = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<1, std::pico::den>>>;
template<Unit U> using nano = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<1, std::nano::den>>>;
template<Unit U> using micro = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<1, std::micro::den>>>;
template<Unit U> using milli = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<1, std::milli::den>>>;
template<Unit U> using centi = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<1, std::centi::den>>>;
template<Unit U> using deca = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<std::deca::num>>>;
template<Unit U> using hecto = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<std::hecto::num>>>;
template<Unit U> using kilo = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<std::kilo::num>>>;
template<Unit U> using mega = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<std::mega::num>>>;
template<Unit U> using giga = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<std::giga::num>>>;
template<Unit U> using tera = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<std::tera::num>>>;
template<Unit U> using peta = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<std::peta::num>>>;
template<Unit U> using exa = unit<typename U::dimension, ratio_multiply<typename U::ratio, ratio<std::exa::num>>>;
} // namespace units