SUBROUTINE slvsml(u,rhs) USE nrtype IMPLICIT NONE REAL(DP), DIMENSION(3,3), INTENT(OUT) :: u REAL(DP), DIMENSION(3,3), INTENT(IN) :: rhs REAL(DP) :: h u=0.0 h=0.5_dp u(2,2)=-h*h*rhs(2,2)/4.0_dp END SUBROUTINE slvsml