double precision friction(3,0:MAXRES2),stochforc(3,0:MAXRES2),
     & fricmat(MAXRES2,MAXRES2),fric_work(MAXRES6),
     & stoch_work(MAXRES6),
     & fricgam(MAXRES6),fricvec(MAXRES2,MAXRES2)
       logical flag_stoch(0:maxflag_stoch)
      common /langforc/ friction,stochforc,
     & fricmat,fric_work,fricgam,stoch_work,fricvec,vrand_mat1,
     & vrand_mat2,prand_mat,vfric_mat,afric_mat,pfric_mat,
     & pfric0_mat,afric0_mat,vfric0_mat,prand0_mat,vrand0_mat1,
     & vrand0_mat2,flag_stoch
      common /langmat/ mt1,mt2,mt3