/* * call-seq: * dvector.mul(number) -> a_dvector * dvector.mul(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.mul(3) -> Dvector[ 33, -15, 6 ] * a * 3 -> Dvector[ 33, -15, 6 ] * 3 * a -> Dvector[ 33, -15, 6 ] * b = Dvector[ 7, 4, -10 ] * a.mul(b) -> Dvector[ 77, -20, -20 ] * a * b -> Dvector[ 77, -20, -20 ] */ VALUE dvector_mul(VALUE ary, VALUE arg) {