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