Matrix() [2/16]

Matrix	(	const value_type &	value,
		size_type	cColumns,
		size_type	cRows
	)

Creates a matrix with a specified number of columns and rows such that all elements appertaining to the main diagonal of the created matrix are initialized with a given value.

Parameters

value	is a value to initialize elements of the main diagonal.
cColumns	is a number of columns in the created matrix.
cRows	is a number of rows in the created matrix.

Example code:

#include <chsvlib/chsvmath.h>
#include <iostream>
#include <iomanip>
using namespace Chusov::Math;
 
template <class val_t, class alloc_t>
std::ostream& operator<<(std::ostream& os, const Matrix<val_t, alloc_t>& m)
{
    for (typename Matrix<val_t, alloc_t>::size_type row = 0; row < m.Rows(); ++row)
    {
        os << "\n[";
        for (typename Matrix<val_t, alloc_t>::size_type col = 0; col < m.Columns() - 1; ++col)
            os << std::setw(3) << m[col][row] << "\t";
        os << std::setw(3) << m[m.Columns() - 1][row] << "]";
    }
    os << std::endl;
    return os;
}
 
int main(int argc, char** argv)
{
    Matrix<int> m1(1, 3, 3); //3-by-3 identity matrix
    std::cout << m1 << std::endl;
    Matrix<int> m2(1, 3, 4); //3-by-4 matrix with main diagonal elements equal 1
    std::cout << m2 << std::endl;
    Matrix<int> m3(2, 4, 3); //4-by-3 matrix with main diagonal elements equal 2
    std::cout << m3 << std::endl;
}

Output:

[  1   0   0]
[  0   1   0]
[  0   0   1]
 
[  1   0   0]
[  0   1   0]
[  0   0   1]
[  0   0   0]
 
[  2   0   0   0]
[  0   2   0   0]
[  0   0   2   0]