tests the following constructor : densematrix64f int numcols , int numrows concode_field_sep Random rand concode_field_sep void testReshape concode_elem_sep void testConstructorCopy concode_elem_sep void testInBounds concode_elem_sep void testConstruactorDoubleArray concode_elem_sep void testGeneric concode_elem_sep void set_ColumnMajor concode_elem_sep void testSet_Matrix concode_elem_sep void testConstructorSingleArray concode_elem_sep void testSetReshape_Matrix concode_elem_sep void wrap concode_elem_sep void set_RowMajor