SmallMatrix.h File Reference

#include "GeneralDefine.h"
#include "Logger.h"
#include "SmallVector.h"
#include "SmallMatrix_impl.h"

Go to the source code of this file.

Classes
class	SmallMatrix< numberOfRows, numberOfColumns >
	Data type for small dense matrix. More...

Functions
template<unsigned int numberOfRows, unsigned int numberOfColumns>
std::ostream &	operator<< (std::ostream &os, const SmallMatrix< numberOfRows, numberOfColumns > &A)
	Writes nicely formatted entries of the Matrix A to the stream os. More...
template<unsigned int numberOfRows, unsigned int numberOfColumns>
SmallMatrix< numberOfRows, numberOfColumns >	operator* (const Mdouble d, const SmallMatrix< numberOfRows, numberOfColumns > &mat)
	Multiplies a matrix with a Mdouble. More...
template<unsigned int numberOfRows, unsigned int numberOfColumns>
SmallVector< numberOfColumns >	operator* (SmallVector< numberOfRows > &vec, SmallMatrix< numberOfRows, numberOfColumns > &mat)
	Multiplies a matrix with a vector. More...

Function Documentation

operator*() [1/2]

template<unsigned int numberOfRows, unsigned int numberOfColumns>

SmallMatrix<numberOfRows, numberOfColumns> operator*	(	const Mdouble	d,
		const SmallMatrix< numberOfRows, numberOfColumns > &	mat
	)

Multiplies a matrix with a Mdouble.

{
    return mat * d;
}

operator*() [2/2]

template<unsigned int numberOfRows, unsigned int numberOfColumns>

SmallVector<numberOfColumns> operator*	(	SmallVector< numberOfRows > &	vec,
		SmallMatrix< numberOfRows, numberOfColumns > &	mat
	)

Multiplies a matrix with a vector.

{
    if (numberOfColumns == 0)
    {
        logger(WARN, "Trying to multiply a vector with a matrix without any columns.");
        return SmallVector<numberOfColumns>();
    }
    int nr = numberOfRows;
    int nc = numberOfColumns;
    
    int i_one = 1;
    double d_one = 1.0;
    double d_zero = 0.0;
    
    SmallVector<numberOfColumns> result;
    
    logger(DEBUG, "Matrix size: % x % \n Vector size: %", nr, nc, vec.size());
    
    dgemv_("T", &nr, &nc, &d_one, mat.data(), &nr, vec.data(), &i_one, &d_zero, result.data(), &i_one);
    return result;
}

References SmallMatrix< numberOfRows, numberOfColumns >::data(), SmallVector< numberOfRows >::data(), DEBUG, dgemv_(), logger, SmallVector< numberOfRows >::size(), and WARN.

operator<<()

template<unsigned int numberOfRows, unsigned int numberOfColumns>

std::ostream& operator<<	(	std::ostream &	os,
		const SmallMatrix< numberOfRows, numberOfColumns > &	A
	)

Writes nicely formatted entries of the Matrix A to the stream os.

{
    for (unsigned int i = 0; i < numberOfRows; ++i)
    {
        os << A.getRow(i) << std::endl;
    }
    return os;
}

References A, and constants::i.