/* * call-seq: * dvector.concat(other) -> dvector * * Appends the elements in _other_ to dvector. _other_ can either be a Dvector or a 1D Array of numbers. * * a = Dvector[1, 5, -3] * a.concat([6, 7]) -> Dvector[ 1, 5, -3, 6, 7 ] * a -> Dvector[ 1, 5, -3, 6, 7 ] */ VALUE dvector_concat(VALUE x, VALUE y) {