subroutine memo(flag,nevprt,t,xd,x,nx,z,nz,tvec,ntvec,
& rpar,nrpar,ipar,nipar,u,nu,y,ny)
c Copyright INRIA
c Scicos block simulator
c returns sample and hold of the input
c
double precision t,xd(*),x(*),z(*),tvec(*),rpar(*),u(*),y(*)
integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
integer nipar,nu,ny
c
if(flag.eq.2) then
do 15 i=1,nu
y(i)=u(i)
15 continue
elseif(flag.eq.4) then
do 25 i=1,nu
y(i)=rpar(i)
25 continue
endif
end