tem_d2str_arr Function

  function tem_d2str_arr(val, sep, logger) result(str)
    ! ---------------------------------------------------------------------------
    !>
    real(kind=double_k), intent(in) :: val(:)
    !>
    character(len=*), intent(in)    :: sep
    !>
    type(tem_logging_type), optional, intent(in) :: logger
    !>
    character(len=SolSpecLen) :: str
    ! ---------------------------------------------------------------------------
    character(len=SolSpecLen)     :: temp_str
    character(len=form_len)       :: form
    integer                       :: iter, idx, offset, off_sep
    ! ---------------------------------------------------------------------------
    if (present(logger)) then
      form = logger%real_form
    else
      form = primary%real_form
    end if

    off_sep = len(sep)
    offset = 0

    str = ''
    idx = 1
    do iter=1, size(val)
      ! Convert the ith element of array into character
      write(temp_str, '(' // trim(form) // ')') val(iter)
      ! Append the above obtained character to string followed by separator
      offset = len_trim(temp_str)
      str(idx:idx+offset-1) = trim(temp_str(1:offset) )
      if( iter .ne. size(val) ) then
        str(idx+offset:idx+offset+off_sep) = sep(1:off_sep)
      end if
      idx = idx + offset + off_sep + 1
    end do
    ! Clip the final string to removed unwanted stuff
    str = str(1:size(val)*(offset+off_sep+1)-off_sep-1)

  end function tem_d2str_arr