constexpr for Vector<2> constructors

Author: TomSaw

src/modm/math/geometry/vector2.hpp

@@ -62,18 +62,11 @@ namespace modm
 		typedef typename GeometricTraits<T>::FloatType FloatType;
 
 	public:
-		/**
-		 * \brief	Default-Constructor
-		 *
-		 * Creates a Vector with coordinates (0, 0).
-		 */
-		Vector();
-
-		Vector(const T& inX, const T& inY);
-
-		Vector(const Vector<T, 1> &inX, const Vector<T, 1> &inY);
-		Vector(const T &inX, const Vector<T, 1> &inY);
-		Vector(const Vector<T, 1> &inX, const T &inY);
+		constexpr Vector() = default;
+		constexpr Vector(const T& inX, const T& inY);
+		constexpr Vector(const Vector<T, 1> &inX, const Vector<T, 1> &inY);
+		constexpr Vector(const T &inX, const Vector<T, 1> &inY);
+		constexpr Vector(const Vector<T, 1> &inX, const T &inY);
 		explicit Vector(T inVal);
 		Vector(const Matrix<T, 2, 1> &rhs);
 
@@ -246,8 +239,8 @@ namespace modm
 		const T* ptr() const;
 
 		Vector operator - () const;
-		Vector operator - (const Vector &rhs) const;
-		Vector operator + (const Vector &rhs) const;
+		constexpr Vector operator - (const Vector &rhs) const;
+		constexpr Vector operator + (const Vector &rhs) const;
 		T operator * (const Vector &rhs) const;
 		T operator ^ (const Vector &rhs) const;
 		Vector operator * (float rhs) const;

src/modm/math/geometry/vector2_impl.hpp

@@ -18,23 +18,15 @@
 
 // ----------------------------------------------------------------------------
 template<typename T>
-modm::Vector<T, 2>::Vector() :
-	x(),
-	y()
-{
-}
-
-// ----------------------------------------------------------------------------
-template<typename T>
-modm::Vector<T, 2>::Vector(const T& inX, const T& inY) :
+constexpr modm::Vector<T, 2>::Vector(const T& inX, const T& inY) :
 	x(inX),
 	y(inY)
 {
 }
 
 // ----------------------------------------------------------------------------
 template<typename T>
-modm::Vector<T, 2>::Vector(
+constexpr modm::Vector<T, 2>::Vector(
 		const modm::Vector<T, 1> &inX,
 		const modm::Vector<T, 1> &inY) :
 	x(inX.x),
@@ -44,15 +36,15 @@ modm::Vector<T, 2>::Vector(
 
 // ----------------------------------------------------------------------------
 template<typename T>
-modm::Vector<T, 2>::Vector(const T &inX, const modm::Vector<T, 1> &inY) :
+constexpr modm::Vector<T, 2>::Vector(const T &inX, const modm::Vector<T, 1> &inY) :
 	x(inX),
 	y(inY.x)
 {
 }
 
 // ----------------------------------------------------------------------------
 template<typename T>
-modm::Vector<T, 2>::Vector(const modm::Vector<T, 1> &inX, const T &inY) :
+constexpr modm::Vector<T, 2>::Vector(const modm::Vector<T, 1> &inX, const T &inY) :
 	x(inX.x),
 	y(inY)
 {
@@ -406,15 +398,15 @@ modm::Vector<T, 2>::operator - () const
 
 // ----------------------------------------------------------------------------
 template<typename T>
-modm::Vector<T, 2>
+constexpr modm::Vector<T, 2>
 modm::Vector<T, 2>::operator - (const modm::Vector<T, 2> &rhs) const
 {
 	return modm::Vector<T, 2>(x - rhs.x, y - rhs.y);
 }
 
 // ----------------------------------------------------------------------------
 template<typename T>
-modm::Vector<T, 2>
+constexpr modm::Vector<T, 2>
 modm::Vector<T, 2>::operator + (const modm::Vector<T, 2> &rhs) const
 {
 	return modm::Vector<T, 2>(x + rhs.x, y + rhs.y);