C CHREP6    SOURCE    PV090527  23/01/27    21:15:13     11574          
      subroutine chrep6(x6,vp33,controle,xp6)
      
c     changement de base d'un pseudo vecteur de deformation
c     contenant des gama si controle=vrai
      
      implicit real*8 (a-h,o-z)
      implicit integer (i-n)
      
c     variables externes           
      real*8 x6(6),vp33(3,3),xp6(6)
      logical controle
      
c     variables locales
      integer j
      real*8 x33(3,3),xp33(3,3)
            

c     chargement et passage des deformations

      if (controle) then   
c       gama->epsilon             
        do j=4,6
           x6(j)=0.5d0*x6(j)
        end do
      end if
      
      call x6x33(x6,x33)         
      call chre3(xp33,x33,vp33)
      call x33x6(xp33,xp6)
      
      if(controle) then
c       epsilon->gama si controle         
        do j=4,6
           x6(j)=2.d0*x6(j)
           xp6(j)=2.d0*xp6(j)
        end do
      end if
      return
      end