function createMatrix( n, bool ) {
	var strides;
	var buffer;
	var shape;
	var f;

	if ( bool ) {
		f = bctor;
	} else {
		f = ctor;
	}
	buffer = new Float64Array( n*n );
	shape = [ n, n ];
	strides = [ n, 1 ];
	return f( 'float64', buffer, shape, strides, 0, 'row-major' );
}
Returns a matrix.

@private
@param {PositiveInteger} n - matrix order
@param {boolean} bool - boolean indicating whether to create a low-level ndarray
@returns {ndarray} matrix