SSSim

/*

 * This is SSSim: the Simple & Stupid Simulator

 *

 *  Copyright (c) 2015 Luca Baldesi

 *

 *  This is free software; see gpl-3.0.txt

 */

#ifndef __MATRIX_H__

#define __MATRIX_H__ 1

#include <stdint.h>

typedef uint32_t matsize;

typedef double matvalue;

struct matrix * matrix_from_edgefile(const char * edgefile);

matvalue matrix_element_get(const struct matrix * m, matsize i, matsize j);

int matrix_element_set(const struct matrix * m, matsize i, matsize j, matvalue v);

matsize matrix_num_rows(const struct matrix * m);

matsize matrix_num_cols(const struct matrix * m);

struct matrix * matrix_eigencentrality(const struct matrix * m, matvalue * dominant_eigenvalue);

struct matrix * matrix_multiply(const struct matrix * m1, const struct matrix * m2);

struct matrix * matrix_ones(matsize rows, matsize cols);

struct matrix * matrix_diag(const struct matrix * m);

struct matrix * matrix_invdiag(const struct matrix * m);

int matrix_stochastify(struct matrix *m);

void matrix_destroy(struct matrix **m);

void matrix_shrink(struct matrix **m, matsize pos);

/* TODO the functions below have not a test case */

int matrix_make_bidir(struct matrix * m);

matvalue matrix_sum_values(const struct matrix *m);

void matrix_divide(struct matrix *m, matvalue v);

#endif