/// @ref core
/// @file glm/detail/type_mat4x4.hpp

#pragma once

#include "type_vec4.hpp"
#include <limits>
#include <cstddef>

namespace glm
{
	template<typename T, qualifier Q>
	struct mat<4, 4, T, Q>
	{
		typedef vec<4, T, Q> col_type;
		typedef vec<4, T, Q> row_type;
		typedef mat<4, 4, T, Q> type;
		typedef mat<4, 4, T, Q> transpose_type;
		typedef T value_type;

	private:
		col_type value[4];

	public:
		// -- Accesses --

		typedef length_t length_type;
		GLM_FUNC_DECL static constexpr length_type length(){return 4;}

		GLM_FUNC_DECL GLM_CONSTEXPR col_type & operator[](length_type i) noexcept;
		GLM_FUNC_DECL GLM_CONSTEXPR col_type const& operator[](length_type i) const noexcept;

		// -- Constructors --

		GLM_DEFAULTED_DEFAULT_CTOR_DECL GLM_CONSTEXPR mat() GLM_DEFAULT_CTOR;
		GLM_CTOR_DECL mat(mat<4, 4, T, Q> const& m) = default;
		template<qualifier P>
		GLM_CTOR_DECL mat(mat<4, 4, T, P> const& m);

		GLM_CTOR_DECL GLM_EXPLICIT mat(T s);
		GLM_CTOR_DECL mat(
			T const& x0, T const& y0, T const& z0, T const& w0,
			T const& x1, T const& y1, T const& z1, T const& w1,
			T const& x2, T const& y2, T const& z2, T const& w2,
			T const& x3, T const& y3, T const& z3, T const& w3);
		GLM_CTOR_DECL mat(
			col_type const& v0,
			col_type const& v1,
			col_type const& v2,
			col_type const& v3);

		// -- Conversions --

		template<
			typename X1, typename Y1, typename Z1, typename W1,
			typename X2, typename Y2, typename Z2, typename W2,
			typename X3, typename Y3, typename Z3, typename W3,
			typename X4, typename Y4, typename Z4, typename W4>
		GLM_CTOR_DECL mat(
			X1 const& x1, Y1 const& y1, Z1 const& z1, W1 const& w1,
			X2 const& x2, Y2 const& y2, Z2 const& z2, W2 const& w2,
			X3 const& x3, Y3 const& y3, Z3 const& z3, W3 const& w3,
			X4 const& x4, Y4 const& y4, Z4 const& z4, W4 const& w4);

		template<typename V1, typename V2, typename V3, typename V4>
		GLM_CTOR_DECL mat(
			vec<4, V1, Q> const& v1,
			vec<4, V2, Q> const& v2,
			vec<4, V3, Q> const& v3,
			vec<4, V4, Q> const& v4);

		// -- Matrix conversions --

		template<typename U, qualifier P>
		GLM_CTOR_DECL GLM_EXPLICIT mat(mat<4, 4, U, P> const& m);

		GLM_CTOR_DECL GLM_EXPLICIT mat(mat<2, 2, T, Q> const& x);
		GLM_CTOR_DECL GLM_EXPLICIT mat(mat<3, 3, T, Q> const& x);
		GLM_CTOR_DECL GLM_EXPLICIT mat(mat<2, 3, T, Q> const& x);
		GLM_CTOR_DECL GLM_EXPLICIT mat(mat<3, 2, T, Q> const& x);
		GLM_CTOR_DECL GLM_EXPLICIT mat(mat<2, 4, T, Q> const& x);
		GLM_CTOR_DECL GLM_EXPLICIT mat(mat<4, 2, T, Q> const& x);
		GLM_CTOR_DECL GLM_EXPLICIT mat(mat<3, 4, T, Q> const& x);
		GLM_CTOR_DECL GLM_EXPLICIT mat(mat<4, 3, T, Q> const& x);

		// -- Unary arithmetic operators --

		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator=(mat<4, 4, T, Q> const& m) = default;
		template<typename U>
		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator=(mat<4, 4, U, Q> const& m);
		template<typename U>
		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator+=(U s);
		template<typename U>
		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator+=(mat<4, 4, U, Q> const& m);
		template<typename U>
		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator-=(U s);
		template<typename U>
		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator-=(mat<4, 4, U, Q> const& m);
		template<typename U>
		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator*=(U s);
		template<typename U>
		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator*=(mat<4, 4, U, Q> const& m);
		template<typename U>
		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator/=(U s);
		template<typename U>
		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator/=(mat<4, 4, U, Q> const& m);

		// -- Increment and decrement operators --

		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator++();
		GLM_FUNC_DISCARD_DECL GLM_CONSTEXPR mat<4, 4, T, Q>& operator--();
		GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator++(int);
		GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator--(int);
	};

	// -- Unary operators --

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator+(mat<4, 4, T, Q> const& m);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator-(mat<4, 4, T, Q> const& m);

	// -- Binary operators --

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator+(mat<4, 4, T, Q> const& m, T scalar);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator+(T scalar, mat<4, 4, T, Q> const& m);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator+(mat<4, 4, T, Q> const& m1, mat<4, 4, T, Q> const& m2);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator-(mat<4, 4, T, Q> const& m, T scalar);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator-(T scalar, mat<4, 4, T, Q> const& m);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator-(mat<4, 4, T, Q> const& m1,	mat<4, 4, T, Q> const& m2);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator*(mat<4, 4, T, Q> const& m, T scalar);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator*(T scalar, mat<4, 4, T, Q> const& m);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR typename mat<4, 4, T, Q>::col_type operator*(mat<4, 4, T, Q> const& m, typename mat<4, 4, T, Q>::row_type const& v);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR typename mat<4, 4, T, Q>::row_type operator*(typename mat<4, 4, T, Q>::col_type const& v, mat<4, 4, T, Q> const& m);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<2, 4, T, Q> operator*(mat<4, 4, T, Q> const& m1, mat<2, 4, T, Q> const& m2);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<3, 4, T, Q> operator*(mat<4, 4, T, Q> const& m1, mat<3, 4, T, Q> const& m2);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator*(mat<4, 4, T, Q> const& m1, mat<4, 4, T, Q> const& m2);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator/(mat<4, 4, T, Q> const& m, T scalar);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator/(T scalar, mat<4, 4, T, Q> const& m);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR typename mat<4, 4, T, Q>::col_type operator/(mat<4, 4, T, Q> const& m, typename mat<4, 4, T, Q>::row_type const& v);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR typename mat<4, 4, T, Q>::row_type operator/(typename mat<4, 4, T, Q>::col_type const& v, mat<4, 4, T, Q> const& m);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR mat<4, 4, T, Q> operator/(mat<4, 4, T, Q> const& m1,	mat<4, 4, T, Q> const& m2);

	// -- Boolean operators --

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR bool operator==(mat<4, 4, T, Q> const& m1, mat<4, 4, T, Q> const& m2);

	template<typename T, qualifier Q>
	GLM_FUNC_DECL GLM_CONSTEXPR bool operator!=(mat<4, 4, T, Q> const& m1, mat<4, 4, T, Q> const& m2);
}//namespace glm

#ifndef GLM_EXTERNAL_TEMPLATE
#include "type_mat4x4.inl"
#endif//GLM_EXTERNAL_TEMPLATE
