/* * call-seq: * dvector.reverse_each {|x| block } * * Same as <code>Dvector#each</code>, but traverses _dvector_ in reverse * order. * * a = Dvector[ 1, 0, -1 ] * a.each {|x| print x, " " } * * produces: * * -1 0 1 */ VALUE dvector_reverse_each(VALUE ary) {