/* * call-seq: * dvector.add(number) -> a_dvector * dvector.add(other) -> a_dvector * dvector + number -> a_dvector * number + dvector -> a_dvector * dvector + other -> a_dvector * * When argument is a number, this operation returns a copy of _dvector_ with each entry x replaced by x + _number_. * When argument is a vector, this operation returns a copy of _dvector_ with each entry x replaced * by x + the corresponding entry in the _other_ vector. * * a = Dvector[ 11, -5, 2 ] * a.add(3) -> Dvector[ 14, -2, 5 ] * a + 3 -> Dvector[ 14, -2, 5 ] * 3 + a -> Dvector[ 14, -2, 5 ] * b = Dvector[ 7, 4, -10 ] * a.add(b) -> Dvector[ 18, -1, -8 ] * a + b -> Dvector[ 18, -1, -8 ] */ VALUE dvector_add(VALUE ary, VALUE arg) {