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Implement spaceship operator for geom::vector

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This commit is contained in:
Nikita Lisitsa 2022-07-04 18:22:42 +03:00
parent e62fc51052
commit eb1e367085
1 changed files with 14 additions and 0 deletions
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14
libs/geom/include/psemek/geom/vector.hpp
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@ -9,6 +9,7 @@
#include <type_traits> #include <type_traits>
#include <stdexcept> #include <stdexcept>
#include <cmath> #include <cmath>
#include <compare>
namespace psemek::geom namespace psemek::geom
{ {
@ -97,6 +98,19 @@ namespace psemek::geom
return !(v1 < v2); return !(v1 < v2);
} }
template <typename T, std::size_t N>
std::strong_ordering operator <=> (vector<T, N> const & v1, vector<T, N> const & v2)
{
for (std::size_t i = 0; i < N; ++i)
{
if (v1[i] < v2[i])
return std::strong_ordering::less;
if (v1[i] > v2[i])
return std::strong_ordering::greater;
}
return std::strong_ordering::equal;
}
template <typename T1, typename T, std::size_t N> template <typename T1, typename T, std::size_t N>
vector<T1, N> cast(vector<T, N> const & v) vector<T1, N> cast(vector<T, N> const & v)
{ {