function y = idct1(x,n)
funcprot(0);
rhs=argn(2)
if (rhs<1 | rhs>2) then
    error("Wrong number of input arguments.")
end
select(rhs)
case 1 then
    y=callOctave("idct",x)
case 2 then 
    y=callOctave("idct",x,n)
end

endfunction