#include "../exceptions/SNexceptions.cpp"

Include dependency graph for MathUtilities.h:

This graph shows which files directly or indirectly include this file:

Classes
class	SNgeneric< T, tp_size >
	This is the base class for the other matrices types. More...

Functions
template<class U , unsigned int s, class V , unsigned int t>
void	checkSizeCompatibility (const SNgeneric< U, s > &A, const SNgeneric< V, t > &B)

template<class T , class U >
bool	componentWiseeEquality (const T &A, const U &B)

template<class T , class U , unsigned int s, unsigned int t>
T	matrixProductComponent (const SNgeneric< T, s > &A, const SNgeneric< U, t > &B, unsigned int i, unsigned int j)
	compute the component (i,j) of the matrix product A*B More...

template<class U , unsigned int t, class T , unsigned int tp_size>
void	copyFirstLines (SNgeneric< U, t > &ans, const SNgeneric< T, tp_size > &A, const m_num max_l)
	copy the first lines of a matrix in an other one. More...

Function Documentation

template<class U , unsigned int s, class V , unsigned int t>

void checkSizeCompatibility	(	const SNgeneric< U, s > &	A,
		const SNgeneric< V, t > &	B
	)

template<class T , class U >

bool componentWiseeEquality	(	const T &	A,
		const U &	B
	)

template<class U , unsigned int t, class T , unsigned int tp_size>

void copyFirstLines	(	SNgeneric< U, t > &	ans,
		const SNgeneric< T, tp_size > &	A,
		const m_num	max_l
	)

copy the first lines of a matrix in an other one.

Parameters

ans	the matrix in which one copies (non-const).
A	the matrix from which one copies (const).
max_l	the number of lines that have to be copied (const).

1 copyFirstLines(A,B,5);

Now the 5 first lines in A are the same of the ones of B. The previously present elements in the first 5 lines of A are lost.

This function is useful to populate the "answer" matrix when multiplying a gaussian matrix by something else.

Remarks :

the matrices ans and A must have same size;
for the template type, ans is SNgeneric<U,s> and A is SNgeneric<T,tp_size>. Obviously the conversion from T to U must be possible.

See also: SNmultiGaussian<T,tp_size>::setFirstLines(const SNgeneric<U,s>& other,const m_num max_l);

template<class T , class U , unsigned int s, unsigned int t>

T matrixProductComponent	(	const SNgeneric< T, s > &	A,
		const SNgeneric< U, t > &	B,
		unsigned int	i,
		unsigned int	j
	)

compute the component (i,j) of the matrix product A*B

Parameters

A	a matrix
B	a matrix
i	the line of the element of 'A*B' to be computed
j	the column of the element of 'A*B' to be computed

The size compatibility is not checked since this functions is supposed to be called from something like an operator * that has already checked the compatibility.

As stated in the README.md, the type of the elements in the returned matrix is the one of the first matrix of the product.

Classes

Functions

Function Documentation