module sort_mod
  implicit none
contains
  subroutine sort(n,arr)
    implicit none
    integer, intent(in) :: n
    real, intent(inout) :: arr(n)
    real :: tmp(n) ! tmp is likely used by ssort as workspace?
    ! Original call: call ssort(arr,tmp,n,1)
    ! ssort usually needs a workspace or index array.
    ! Assuming external ssort.
    
    call ssort(arr,tmp,n,1)
    
  end subroutine sort
end module sort_mod
