integer,parameter              :: nspin = 2
  integer,parameter              :: maxShell = 50
  integer,parameter              :: n1eInt = 3
  integer,parameter              :: n2eInt = 4
  integer,parameter              :: n3eInt = 3
  integer,parameter              :: n4eInt = 3
  integer,parameter              :: maxK = 20

  double precision,parameter    :: pi = acos(-1d0)
  double precision,parameter    :: HaToeV = 27.21138602d0
  double precision,parameter    :: pmtoau = 0.0188973d0