Computational routine
eng

##
powblk

### File content

          subroutine powblk(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     rpar(1) is power
    c
          double precision t,xd(*),x(*),z(*),tvec(*),rpar(*),u(*),y(*)
          integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
          integer nipar,nu,ny

    c
    c
          if (nrpar.eq.1) then
             do 15 i=1,nu
                if(u(i).lt.0.d0) then
                   if (flag.ge.4) return
                   flag=-2
                   return
                elseif(u(i).eq.0.d0.and.rpar(1).le.0) then
                   if (flag.ge.4) return
                   flag=-2
                   return
                endif
                y(i)=u(i)**rpar(1)
     15      continue
          else
             do 25 i=1,nu
                if(ipar(1).le.0.and.u(i).eq.0.0d0) then
                   if (flag.ge.4) return
                   flag=-2
                   return
                endif
                y(i)=u(i)**ipar(1)
     25      continue
          endif

          end