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typedef struct
{
int size1;
int size2;
int** array;
}
matrix;
matrix* matrix_alloc(int size1, int size2)
{
matrix* m = malloc(sizeof(matrix));
m->size1 = size1;
m->size2 = size2;
m->array = malloc(size1*size2*sizeof(int));
int i;
for (i = 0; i < size1; i++)
m->array[i] = malloc(size2*sizeof(int));
return m;
}
matrix* cpy_matrix(matrix* m)
{
matrix* cpy = matrix_alloc(m->size1, m->size2);
int i, j;
for (i = 0; i < m->size1; i++)
for (j = 0; j < m->size2; j++)
cpy->array[i][j] = m->array[i][j];
return cpy;
}
matrix* sin_matrix(matrix* m)
{
int i, j;
for (i = 0; i < m->size1; i++)
for (j = 0; j < m->size2; j++)
m->array[i][j] = 255*sin((double)m->array[i][j]);
return m;
}
matrix* cos_matrix(matrix* m)
{
int i, j;
for (i = 0; i < m->size1; i++)
for (j = 0; j < m->size2; j++)
m->array[i][j] = 255*cos((double)m->array[i][j]);
return m;
}
matrix* sqrt_matrix(matrix* m)
{
int i, j;
for (i = 0; i < m->size1; i++)
for (j = 0; j < m->size2; j++)
m->array[i][j] = (int)sqrt((double)m->array[i][j]);
return m;
}
void matrix_add(matrix* m1, matrix* m2)
{
int i, j;
for (i = 0; i < m1->size1; i++)
for (j = 0; j < m1->size2; j++)
m1->array[i][j] += m2->array[i][j];
}
void matrix_sub(matrix* m1, matrix* m2)
{
int i, j;
for (i = 0; i < m1->size1; i++)
for (j = 0; j < m1->size2; j++)
m1->array[i][j] -= m2->array[i][j];
}
void matrix_add_constant(matrix* m, int c)
{
int i, j;
for (i = 0; i < m->size1; i++)
for (j = 0; j < m->size2; j++)
m->array[i][j] += c;
}
void matrix_mul_elements(matrix* m1, matrix* m2)
{
int i, j;
for (i = 0; i < m1->size1; i++)
for (j = 0; j < m1->size2; j++)
m1->array[i][j] *= m2->array[i][j];
}
void matrix_scale(matrix* m, int c)
{
int i, j;
for (i = 0; i < m->size1; i++)
for (j = 0; j < m->size2; j++)
m->array[i][j] *= c;
}
matrix* mod256(matrix* m)
{
int i, j;
for (i = 0; i < m->size1; i++)
for (j = 0; j < m->size2; j++)
m->array[i][j] %= 256;
return m;
}
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