Computational routine
eng
diffblk
subroutine diffblk(flag,nevprt,t,res,xd,x,nx,z,nz,tvec,ntvec,
& rpar,nrpar,ipar,nipar,u,nu,y,ny)
c Copyright INRIA
c Scicos block simulator
c
double precision t,xd(*),x(*),z(*),res(*),tvec(*),rpar(*)
double precision u(*),y(*)
integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
integer nipar,nu,ny
c
c
if (flag.eq.0) then
do 10 i=1,nu
res(i)=x(i)-u(i)
10 continue
elseif(flag.eq.1) then
do 11 i=1,nu
y(i)=xd(i)
11 continue
elseif(flag.eq.6.or.flag.eq.7) then
do 12 i=1,nu
x(i)=u(i)
12 continue
endif
end