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Digital information concept added

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Mateusz Pusz
2019-09-10 22:34:26 +02:00
parent bebaa5482c
commit 19e07fd549
1 changed files with 38 additions and 1 deletions
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39
test/unit_test/test_custom_units.cpp
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@ -27,7 +27,44 @@
namespace {
using namespace std::experimental::units;
using namespace std::experimental;
inline constexpr units::base_dimension base_dim_digital_information{"digital information"};
struct digital_information : units::make_dimension_t<units::exp<base_dim_digital_information, 1>> {};
template<typename T>
concept bool DigitalInformation = units::QuantityOf<T, digital_information>;
struct bit : units::unit<digital_information> {};
struct byte : units::unit<digital_information, units::ratio<8>> {};
inline namespace literals {
constexpr auto operator""_b(unsigned long long l) { return units::quantity<bit, std::int64_t>(l); }
constexpr auto operator""_b(long double l) { return units::quantity<bit, long double>(l); }
constexpr auto operator""_B(unsigned long long l) { return units::quantity<byte, std::int64_t>(l); }
constexpr auto operator""_B(long double l) { return units::quantity<byte, long double>(l); }
}
}
namespace stde = std::experimental;
template<> struct stde::units::downcasting_traits<stde::units::downcast_from<digital_information>> : stde::units::downcast_to<digital_information> {};
template<> struct stde::units::downcasting_traits<stde::units::downcast_from<bit>> : stde::units::downcast_to<bit> {};
template<> struct stde::units::downcasting_traits<stde::units::downcast_from<::byte>> : stde::units::downcast_to<::byte> {};
namespace {
static_assert(1_B == 8_b);
}
namespace {
using namespace stde::units;
// power spectral density
// todo: add support for make_dimension_t of non base units