feat: qp.quantity_from(PO) added

2023-09-13 11:57:22 +02:00
parent 75fc3a0384
commit e085beef40
5 changed files with 36 additions and 18 deletions
@@ -174,6 +174,13 @@ public:
  }
 #endif

+  template<PointOrigin PO2>
+    requires requires { quantity_point{} - PO2{}; }
+  [[nodiscard]] constexpr Quantity auto quantity_from(PO2) const
+  {
+    return *this - PO2{};
+  }
+
  template<Unit U>
    requires detail::QuantityConvertibleTo<quantity_type, quantity<::mp_units::reference<quantity_spec, U{}>{}, Rep>>
  [[nodiscard]] constexpr quantity_point<::mp_units::reference<quantity_spec, U{}>{}, PO, Rep> in(U) const