subroutine CalculateEntropy_DGModel2D_t(this)
implicit none
class(DGModel2D_t),intent(inout) :: this
! Local
integer :: iel,i,j,ierror
real(prec) :: e,jac
real(prec) :: s(1:this%nvar)
e = 0.0_prec
do iel = 1,this%geometry%nelem
do j = 1,this%solution%interp%N+1
do i = 1,this%solution%interp%N+1
jac = this%geometry%J%interior(i,j,iel,1)
s = this%solution%interior(i,j,iel,1:this%nvar)
e = e+this%entropy_func(s)*jac
enddo
enddo
enddo
if(this%mesh%decomp%mpiEnabled) then
call mpi_allreduce(e, &
this%entropy, &
1, &
this%mesh%decomp%mpiPrec, &
MPI_SUM, &
this%mesh%decomp%mpiComm, &
iError)
else
this%entropy = e
endif
endsubroutine CalculateEntropy_DGModel2D_t