82 lines
2.3 KiB
Fortran
82 lines
2.3 KiB
Fortran
! { dg-do compile }
|
|
module m1
|
|
implicit none
|
|
|
|
type, abstract :: vector_class
|
|
end type vector_class
|
|
end module m1
|
|
!---------------------------------------------------------------
|
|
module m2
|
|
use m1
|
|
implicit none
|
|
|
|
type, abstract :: inner_product_class
|
|
contains
|
|
procedure(dot), deferred :: dot_v_v
|
|
procedure(dot), deferred :: dot_g_g
|
|
procedure(sub), deferred :: D_times_v
|
|
procedure(sub), deferred :: D_times_g
|
|
end type inner_product_class
|
|
|
|
abstract interface
|
|
function dot (this,a,b)
|
|
import :: inner_product_class
|
|
import :: vector_class
|
|
class(inner_product_class), intent(in) :: this
|
|
class(vector_class), intent(in) :: a,b
|
|
real :: dot
|
|
end function
|
|
subroutine sub (this,a)
|
|
import :: inner_product_class
|
|
import :: vector_class
|
|
class(inner_product_class), intent(in) :: this
|
|
class(vector_class), intent(inout) :: a
|
|
end subroutine
|
|
end interface
|
|
end module m2
|
|
!---------------------------------------------------------------
|
|
module m3
|
|
use :: m1
|
|
use :: m2
|
|
implicit none
|
|
private
|
|
public :: gradient_class
|
|
|
|
type, abstract, extends(vector_class) :: gradient_class
|
|
class(inner_product_class), pointer :: my_inner_product => NULL()
|
|
contains
|
|
procedure, non_overridable :: inquire_inner_product
|
|
procedure(op_g_v), deferred :: to_vector
|
|
end type gradient_class
|
|
|
|
abstract interface
|
|
subroutine op_g_v(this,v)
|
|
import vector_class
|
|
import gradient_class
|
|
class(gradient_class), intent(in) :: this
|
|
class(vector_class), intent(inout) :: v
|
|
end subroutine
|
|
end interface
|
|
contains
|
|
function inquire_inner_product (this)
|
|
class(gradient_class) :: this
|
|
class(inner_product_class), pointer :: inquire_inner_product
|
|
|
|
inquire_inner_product => this%my_inner_product
|
|
end function inquire_inner_product
|
|
end module m3
|
|
!---------------------------------------------------------------
|
|
module m4
|
|
use m3
|
|
use m2
|
|
implicit none
|
|
contains
|
|
subroutine cg (g_initial)
|
|
class(gradient_class), intent(in) :: g_initial
|
|
|
|
class(inner_product_class), pointer :: ip_save
|
|
ip_save => g_initial%inquire_inner_product()
|
|
end subroutine cg
|
|
end module m4
|
|
! { dg-final { cleanup-modules "m1 m2 m3 m4" } }
|