Functions
M0_INTERNAL void	m0_linsys_init (struct m0_linsys linsys, struct m0_matrix mat, struct m0_matvec vec, struct m0_matvec res)

M0_INTERNAL void	m0_linsys_fini (struct m0_linsys *linsys)

M0_INTERNAL void	m0_linsys_solve (struct m0_linsys *linsys)

M0_INTERNAL int	m0_matrix_invert (const struct m0_matrix mat, struct m0_matrix mat_inverse)

Detailed Description

A systems of linear equations solving algorithm is a part of M0 core. It is based on Gauss method and performs the following:

Solves a linear system of equations represented by (NxN) matrix and (1xN) vector, result is (1xN) vector.

Function Documentation

M0_INTERNAL void m0_linsys_fini ( struct m0_linsys * linsys )

Definition at line 47 of file ls_solve.c.

Precondition: m0_matrix_init(mat) && m0_matvec_init(vec) && m0_vec_init(res); mat->m_height > 0 && mat->width > 0; mat->m_width == mat->m_height && res->mv_size == vec->mv_size && vec->mv_size == mat->m_width

Definition at line 33 of file ls_solve.c.

M0_INTERNAL void m0_linsys_solve ( struct m0_linsys * linsys )

Solves given system of linear equations, writes result into 'linsys->l_res'.

Definition at line 126 of file ls_solve.c.

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M0_INTERNAL int m0_matrix_invert	(	const struct m0_matrix *	mat,
		struct m0_matrix *	mat_inverse
	)

Inverts a square matrix.

Parameters

[in]	mat	Pointer to an input square matrix
[out]	mat_inverse	Pointer to the inverse of an input matrix

Return values

0	matrix inversion is successful
-ENOMEM	out of memory
-EDOM	input matrix is singular

Precondition: m0_matrix_is_square(mat) and m0_matrix_is_square(mat_inverse); mat->m_width == mat_inverse->m_width

Definition at line 136 of file ls_solve.c.

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