qualpal::FixedMatrix< T, rows, cols > Class Template Reference

Fixed-size matrix class with compile-time dimensions. More...

#include <matrix.h>

Public Member Functions
constexpr	FixedMatrix ()
	Default constructor - elements are zero-initialized.
constexpr	FixedMatrix (std::initializer_list< std::initializer_list< T > > list)
	Construct from nested initializer list.
constexpr FixedMatrix< T, cols, rows >	t () const
	Create transpose of this matrix.
constexpr T &	operator() (std::size_t row, std::size_t col)
	Access matrix element (mutable).
constexpr const T &	operator() (std::size_t row, std::size_t col) const
	Access matrix element (const).
constexpr FixedMatrix< T, rows, cols >	operator* (const T &scalar) const
	Scalar multiplication.
constexpr std::array< T, rows >	operator* (const std::array< T, cols > &vec) const
	Matrix-vector multiplication.
template<std::size_t other_cols>
constexpr FixedMatrix< T, rows, other_cols >	operator* (const FixedMatrix< T, cols, other_cols > &other) const
	Matrix-matrix multiplication (FixedMatrix * FixedMatrix).
constexpr Matrix< T >	operator* (const Matrix< T > &other) const
	Matrix-matrix multiplication (FixedMatrix * dynamic Matrix)
constexpr FixedMatrix< T, rows, cols >	operator+ (const FixedMatrix< T, rows, cols > &other) const
	Matrix addition.
constexpr FixedMatrix< T, rows, cols >	operator- (const FixedMatrix< T, rows, cols > &other) const
	Matrix subtraction.
constexpr void	fill (const T &value)
	Fill all elements with specified value.
constexpr void	zeros ()
	Set all elements to zero.

Detailed Description

template<typename T, std::size_t rows, std::size_t cols>
class qualpal::FixedMatrix< T, rows, cols >

Fixed-size matrix class with compile-time dimensions.

Template Parameters

T	Element type (typically double or float).
rows	Number of rows (compile-time constant).
cols	Number of columns (compile-time constant).

Stores elements in row-major order (C-style). Provides constexpr element access, arithmetic, and multiplication.

Example:

FixedMatrix<double, 2, 3> mat = { {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0} };
double v = mat(1, 2); // Access element at row 1, column 2

See also

Matrix for dynamic-sized matrices

Definition at line 145 of file matrix.h.

Constructor & Destructor Documentation

FixedMatrix() [1/2]

template<typename T , std::size_t rows, std::size_t cols>

constexpr qualpal::FixedMatrix< T, rows, cols >::FixedMatrix ( )

inlineconstexpr

Default constructor - elements are zero-initialized.

Definition at line 149 of file matrix.h.

FixedMatrix() [2/2]

template<typename T , std::size_t rows, std::size_t cols>

constexpr qualpal::FixedMatrix< T, rows, cols >::FixedMatrix ( std::initializer_list< std::initializer_list< T > >  list )

inlineconstexpr

Construct from nested initializer list.

Parameters

list	Nested initializer list of matrix elements

Definition at line 158 of file matrix.h.

Member Function Documentation

fill()

template<typename T , std::size_t rows, std::size_t cols>

constexpr void qualpal::FixedMatrix< T, rows, cols >::fill ( const T &  value )

inlineconstexpr

Fill all elements with specified value.

Definition at line 313 of file matrix.h.

operator()() [1/2]

template<typename T , std::size_t rows, std::size_t cols>

constexpr T & qualpal::FixedMatrix< T, rows, cols >::operator() ( std::size_t  row, std::size_t  col  )

inlineconstexpr

Access matrix element (mutable).

Parameters

row	Row index (0-based).
col	Column index (0-based).

Returns

Reference to element at (row, col).

Note

Elements are stored in row-major order: data[row * cols + col].

Exceptions

std::out_of_range

if indices are out of bounds (in debug builds).

Definition at line 193 of file matrix.h.

operator()() [2/2]

template<typename T , std::size_t rows, std::size_t cols>

constexpr const T & qualpal::FixedMatrix< T, rows, cols >::operator() ( std::size_t  row, std::size_t  col  ) const

inlineconstexpr

Access matrix element (const).

Parameters

row	Row index (0-based).
col	Column index (0-based).

Returns

Const reference to element at (row, col).

Note

Elements are stored in row-major order: data[row * cols + col].

Exceptions

std::out_of_range

if indices are out of bounds (in debug builds).

Definition at line 206 of file matrix.h.

operator*() [1/4]

template<typename T , std::size_t rows, std::size_t cols>

template<std::size_t other_cols>

constexpr FixedMatrix< T, rows, other_cols > qualpal::FixedMatrix< T, rows, cols >::operator* ( const FixedMatrix< T, cols, other_cols > &  other ) const

inlineconstexpr

Matrix-matrix multiplication (FixedMatrix * FixedMatrix).

Template Parameters

other_cols

Number of columns in the other matrix.

Parameters

other

The matrix to multiply with (must have 'cols' rows).

Returns

Result matrix with dimensions (rows × other_cols).

Definition at line 248 of file matrix.h.

operator*() [2/4]

template<typename T , std::size_t rows, std::size_t cols>

constexpr Matrix< T > qualpal::FixedMatrix< T, rows, cols >::operator* ( const Matrix< T > &  other ) const

inlineconstexpr

Matrix-matrix multiplication (FixedMatrix * dynamic Matrix)

Parameters

other

Dynamic matrix to multiply with

Returns

Result as dynamic Matrix

Definition at line 268 of file matrix.h.

operator*() [3/4]

template<typename T , std::size_t rows, std::size_t cols>

constexpr std::array< T, rows > qualpal::FixedMatrix< T, rows, cols >::operator* ( const std::array< T, cols > &  vec ) const

inlineconstexpr

Matrix-vector multiplication.

Parameters

vec	Vector to multiply with (must have 'cols' elements)

Returns

Result vector with 'rows' elements

Definition at line 230 of file matrix.h.

operator*() [4/4]

template<typename T , std::size_t rows, std::size_t cols>

constexpr FixedMatrix< T, rows, cols > qualpal::FixedMatrix< T, rows, cols >::operator* ( const T &  scalar ) const

inlineconstexpr

Scalar multiplication.

Parameters

scalar

Value to multiply all elements by

Returns

New matrix with all elements multiplied by scalar

Definition at line 216 of file matrix.h.

operator+()

template<typename T , std::size_t rows, std::size_t cols>

constexpr FixedMatrix< T, rows, cols > qualpal::FixedMatrix< T, rows, cols >::operator+ ( const FixedMatrix< T, rows, cols > &  other ) const

inlineconstexpr

Matrix addition.

Parameters

other

Matrix to add (must have same dimensions)

Returns

New matrix containing element-wise sum

Definition at line 287 of file matrix.h.

operator-()

template<typename T , std::size_t rows, std::size_t cols>

constexpr FixedMatrix< T, rows, cols > qualpal::FixedMatrix< T, rows, cols >::operator- ( const FixedMatrix< T, rows, cols > &  other ) const

inlineconstexpr

Matrix subtraction.

Parameters

other

Matrix to subtract (must have same dimensions)

Returns

New matrix containing element-wise difference

Definition at line 302 of file matrix.h.

t()

template<typename T , std::size_t rows, std::size_t cols>

constexpr FixedMatrix< T, cols, rows > qualpal::FixedMatrix< T, rows, cols >::t ( ) const

inlineconstexpr

Create transpose of this matrix.

Returns

New FixedMatrix that is the transpose of this matrix

Definition at line 174 of file matrix.h.

zeros()

template<typename T , std::size_t rows, std::size_t cols>

constexpr void qualpal::FixedMatrix< T, rows, cols >::zeros ( )

inlineconstexpr

Set all elements to zero.

Definition at line 316 of file matrix.h.

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The documentation for this class was generated from the following file:

• include/qualpal/matrix.h