Seems no such function available....if you are concerned about the performance, why not creating a matrix and setting columns values with the vectors and getting as a vector by row?
matrixbase::SetColumn()
matrixbase::GetAsVector()
©c¡Ï ¤È¥¹ ©f¨u©c ©c¥ì ¥Î¤³ ©c/ ©¦£¯
©c¨Ê¥Î ¤´¥¨ ¥ó ¨× ¥ó¤á' ¥Ì©¦¥ /¤í ¥Õ©¦©f
¨Ö ¦á ©¦£þ ©` ¥Õ ©¦
©¦