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Spaceship support added (resolves #19)

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Mateusz Pusz
2019-12-11 11:27:51 +01:00
parent e472fdc348
commit c3c80fde11
1 changed files with 30 additions and 0 deletions
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30
src/include/units/quantity.h
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@@ -25,6 +25,9 @@
#include <units/bits/concepts.h>
#include <units/bits/dimension_op.h>
#include <units/bits/unit_text.h>
#if __GNUC__ >= 10
#include <compare>
#endif
#include <limits>
#include <ostream>
@@ -479,6 +482,31 @@ public:
return ret(ret(lhs).count() % ret(rhs).count());
}
#if __GNUC__ >= 10
template<typename D2, typename U2, typename Rep2>
[[nodiscard]] friend constexpr auto operator<=>(const quantity& lhs, const quantity<D2, U2, Rep2>& rhs)
requires equivalent_dim<D, D2> &&
detail::basic_arithmetic<Rep, Rep2> &&
std::totally_ordered_with<Rep, Rep2>
{
using cq = common_quantity<quantity, quantity<D2, U2, Rep2>>;
return cq(lhs).count() <=> cq(rhs).count();
}
// TODO op== not needed (gcc bug)
template<typename D2, typename U2, typename Rep2>
[[nodiscard]] friend constexpr auto operator==(const quantity& lhs, const quantity<D2, U2, Rep2>& rhs)
requires equivalent_dim<D, D2> &&
detail::basic_arithmetic<Rep, Rep2> &&
std::equality_comparable_with<Rep, Rep2>
{
using cq = common_quantity<quantity, quantity<D2, U2, Rep2>>;
return cq(lhs).count() == cq(rhs).count();
}
#else
template<typename D2, typename U2, typename Rep2>
[[nodiscard]] friend constexpr bool operator==(const quantity& lhs, const quantity<D2, U2, Rep2>& rhs)
requires equivalent_dim<D, D2> &&
@@ -535,6 +563,8 @@ public:
return !(lhs < rhs);
}
#endif
template<class CharT, class Traits>
friend std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os, const quantity& q)
{