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#include <cassert>
#include <sp_matrix.h>
extern "C" {
#include <Misc/misc.h> /* For xmalloc() */
}
namespace sp {
int matrix_create( matrix_t* m, int rows, int cols )
{
int r;
assert(m != NULL);
assert(rows>0);
assert(cols>0);
/* Allocate array for rows */
m->data = (int**) xmalloc( rows * sizeof(int*) );
if( !m->data )
return -1;
/* Initialise it */
for( r=0; r<rows; r++ )
m->data[r] = 0;
m->rows = rows;
m->cols = 0;
/* Allocate each row */
for( r=0; r<rows; r++ )
{
m->data[r] = (int*) xmalloc( cols * sizeof(int) );
if( !m->data[r] )
{
matrix_destroy(m);
return -1;
}
}
m->cols = cols;
return 0;
}
void matrix_destroy( matrix_t* m )
{
int r;
assert(m != NULL);
/* If nothing to do, exit */
if( !m->data )
return;
/* Free rows */
for( r=0; r<m->rows; r++ )
{
if( m->data[r] )
xfree( m->data[r] );
}
/* Free array for rows */
xfree( m->data );
m->data = 0;
m->rows = 0;
m->cols = 0;
}
int* matrix_row( matrix_t* m, int row )
{
assert(m != NULL);
assert(row<m->rows);
if( !m || (row<0) || (row>=m->rows) )
return 0;
else
return m->data[row];
}
int matrix_rows( matrix_t* m )
{
assert(m != NULL);
return m->rows;
}
int matrix_cols( matrix_t* m )
{
assert(m != NULL);
return m->cols;
}
int** matrix_data( matrix_t* m )
{
assert(m != NULL);
return m->data;
}
void matrix_fill( matrix_t* m, int value )
{
int r;
int c;
assert(m != NULL);
assert(m->data != NULL);
/* Valid input? */
if( !m || !m->data )
return;
/* Fill the matrix */
for( r=0; r<m->rows; r++ )
for( c=0; c<m->cols; c++ )
m->data[r][c] = value;
}
void matrix_print( matrix_t* m, std::FILE* s )
{
int r;
int c;
assert(m != NULL);
assert(s != NULL);
assert(m->data != NULL);
/* Valid input? */
if( !m || !s || !m->data )
return;
/* Print the matrix to a stream */
for( r=0; r<m->rows; r++ )
{
for( c=0; c<m->cols; c++ )
std::fprintf( s, "%6d ", m->data[r][c] );
std::fprintf( s, "\n" );
}
}
#ifdef TEST_SP_MATRIX
#include <stdio.h>
int main( void )
{
matrix_t m;
std::printf("Creating matrix...\n" );
matrix_create(&m, 10, 10);
std::printf("Rows = %d\nCols = %d\n", matrix_rows(&m), matrix_cols(&m) );
matrix_fill( &m, 123456 );
matrix_print( &m, stdout );
std::printf("Destroying matrix...\n" );
matrix_destroy(&m);
return 0;
}
#endif
}
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