!!$ 
!!$              Parallel Sparse BLAS  version 3.0
!!$    (C) Copyright 2006, 2007, 2008, 2009, 2010
!!$                       Salvatore Filippone    University of Rome Tor Vergata
!!$                       Alfredo Buttari        CNRS-IRIT, Toulouse
!!$ 
!!$  Redistribution and use in source and binary forms, with or without
!!$  modification, are permitted provided that the following conditions
!!$  are met:
!!$    1. Redistributions of source code must retain the above copyright
!!$       notice, this list of conditions and the following disclaimer.
!!$    2. Redistributions in binary form must reproduce the above copyright
!!$       notice, this list of conditions, and the following disclaimer in the
!!$       documentation and/or other materials provided with the distribution.
!!$    3. The name of the PSBLAS group or the names of its contributors may
!!$       not be used to endorse or promote products derived from this
!!$       software without specific written permission.
!!$ 
!!$  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!!$  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!!$  TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!!$  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
!!$  BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
!!$  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
!!$  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
!!$  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
!!$  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
!!$  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!!$  POSSIBILITY OF SUCH DAMAGE.
!!$ 
!!$  
module psb_s_comm_mod

  interface psb_ovrl
    subroutine  psb_sovrlm(x,desc_a,info,jx,ik,work,update,mode)
      use psb_descriptor_type
      real(psb_spk_), intent(inout), target   :: x(:,:)
      type(psb_desc_type), intent(in)         :: desc_a
      integer, intent(out)                    :: info
      real(psb_spk_), intent(inout), optional, target :: work(:)
      integer, intent(in), optional           :: update,jx,ik,mode
    end subroutine psb_sovrlm
    subroutine  psb_sovrlv(x,desc_a,info,work,update,mode)
      use psb_descriptor_type
      real(psb_spk_), intent(inout), target   :: x(:)
      type(psb_desc_type), intent(in)         :: desc_a
      integer, intent(out)                    :: info
      real(psb_spk_), intent(inout), optional, target :: work(:)
      integer, intent(in), optional           :: update,mode
    end subroutine psb_sovrlv
    subroutine  psb_sovrl_vect(x,desc_a,info,work,update,mode)
      use psb_descriptor_type
      use psb_s_vect_mod
      type(psb_s_vect_type), intent(inout)   :: x
      type(psb_desc_type), intent(in)         :: desc_a
      integer, intent(out)                    :: info
      real(psb_spk_), intent(inout), optional, target :: work(:)
      integer, intent(in), optional           :: update,mode
    end subroutine psb_sovrl_vect
  end interface

  interface psb_halo
    subroutine  psb_shalom(x,desc_a,info,alpha,jx,ik,work,tran,mode,data)
      use psb_descriptor_type
      real(psb_spk_), intent(inout),target    :: x(:,:)
      type(psb_desc_type), intent(in)         :: desc_a
      integer, intent(out)                    :: info
      real(psb_spk_), intent(in), optional    :: alpha
      real(psb_spk_), target, optional, intent(inout) :: work(:)
      integer, intent(in), optional           :: mode,jx,ik,data
      character, intent(in), optional         :: tran
    end subroutine psb_shalom
    subroutine  psb_shalov(x,desc_a,info,alpha,work,tran,mode,data)
      use psb_descriptor_type
      real(psb_spk_), intent(inout)           :: x(:)
      type(psb_desc_type), intent(in)         :: desc_a
      integer, intent(out)                    :: info
      real(psb_spk_), intent(in), optional    :: alpha
      real(psb_spk_), target, optional, intent(inout) :: work(:)
      integer, intent(in), optional           :: mode,data
      character, intent(in), optional         :: tran
    end subroutine psb_shalov
    subroutine  psb_shalo_vect(x,desc_a,info,alpha,work,tran,mode,data)
      use psb_descriptor_type
      use psb_s_vect_mod
      type(psb_s_vect_type), intent(inout)   :: x
      type(psb_desc_type), intent(in)         :: desc_a
      integer, intent(out)                    :: info
      real(psb_spk_), intent(in), optional    :: alpha
      real(psb_spk_), target, optional, intent(inout) :: work(:)
      integer, intent(in), optional           :: mode,data
      character, intent(in), optional         :: tran
    end subroutine psb_shalo_vect
  end interface


  interface psb_scatter
    subroutine  psb_sscatterm(globx, locx, desc_a, info, root)
      use psb_descriptor_type
      real(psb_spk_), intent(out)    :: locx(:,:)
      real(psb_spk_), intent(in)     :: globx(:,:)
      type(psb_desc_type), intent(in)  :: desc_a
      integer, intent(out)             :: info
      integer, intent(in), optional    :: root
    end subroutine psb_sscatterm
    subroutine  psb_sscatterv(globx, locx, desc_a, info, root)
      use psb_descriptor_type
      real(psb_spk_), intent(out)    :: locx(:)
      real(psb_spk_), intent(in)     :: globx(:)
      type(psb_desc_type), intent(in)  :: desc_a
      integer, intent(out)             :: info
      integer, intent(in), optional    :: root
    end subroutine psb_sscatterv
  end interface

  interface psb_gather
    subroutine  psb_ssp_allgather(globa, loca, desc_a, info, root, dupl,keepnum,keeploc)
      use psb_descriptor_type
      use psb_mat_mod
      implicit none
      type(psb_sspmat_type), intent(inout) :: loca
      type(psb_sspmat_type), intent(out)   :: globa
      type(psb_desc_type), intent(in) :: desc_a
      integer, intent(out)            :: info
      integer, intent(in), optional   :: root,dupl
      logical, intent(in), optional   :: keepnum,keeploc
    end subroutine psb_ssp_allgather
    subroutine  psb_sgatherm(globx, locx, desc_a, info, root)
      use psb_descriptor_type
      real(psb_spk_), intent(in)    :: locx(:,:)
      real(psb_spk_), intent(out)   :: globx(:,:)
      type(psb_desc_type), intent(in) :: desc_a
      integer, intent(out)            :: info
      integer, intent(in), optional   :: root
    end subroutine psb_sgatherm
    subroutine  psb_sgatherv(globx, locx, desc_a, info, root)
      use psb_descriptor_type
      real(psb_spk_), intent(in)    :: locx(:)
      real(psb_spk_), intent(out)   :: globx(:)
      type(psb_desc_type), intent(in) :: desc_a
      integer, intent(out)            :: info
      integer, intent(in), optional   :: root
    end subroutine psb_sgatherv
    subroutine  psb_sgather_vect(globx, locx, desc_a, info, root)
      use psb_descriptor_type
      use psb_s_vect_mod
      type(psb_s_vect_type), intent(inout) :: locx
      real(psb_spk_), intent(out)     :: globx(:)
      type(psb_desc_type), intent(in) :: desc_a
      integer, intent(out)            :: info
      integer, intent(in), optional   :: root
    end subroutine psb_sgather_vect
  end interface

end module psb_s_comm_mod