!   
!                Parallel Sparse BLAS  version 3.5
!      (C) Copyright 2006-2018
!        Salvatore Filippone    
!        Alfredo Buttari      
!   
!    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.
!   
!    

! == ===================================
!
!
!
! Computational routines
!
!
!
!
!
!
! == ===================================

subroutine psb_d_scsr_csmv(alpha,a,x,beta,y,info,trans) 
  use psb_error_mod
  use psb_string_mod
  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_csmv
  implicit none 
  class(psb_d_scsr_sparse_mat), intent(in) :: a
  real(psb_dpk_), intent(in)          :: alpha, beta, x(:)
  real(psb_dpk_), intent(inout)       :: y(:)
  integer(psb_ipk_), intent(out)                :: info
  character, optional, intent(in)     :: trans

  character :: trans_
  integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc
  real(psb_dpk_) :: acc
  logical   :: tra, ctra
  integer(psb_ipk_) :: err_act
  integer(psb_ipk_) :: ierr(5)
  character(len=20)  :: name='d_scsr_csmv'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  info = psb_success_

  ! This whole data structure is for the sake of a special
  ! case with beta==one and A non unit, revert to base otherwise. 
  if ((beta /= done).or.(a%is_unit())) then
    call a%psb_d_csr_sparse_mat%csmv(alpha,x,beta,y,info,trans)
    if (info /= psb_success_) then
      info = psb_err_internal_error_
      call psb_errpush(info,name)
      goto 9999
    end if
  end if
  
  if (present(trans)) then
    trans_ = trans
  else
    trans_ = 'N'
  end if

  if (.not.a%is_asb()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif


  tra  = (psb_toupper(trans_) == 'T')
  ctra = (psb_toupper(trans_) == 'C')

  if (tra.or.ctra) then 
    m = a%get_ncols()
    n = a%get_nrows()
  else
    n = a%get_ncols()
    m = a%get_nrows()
  end if

  if (size(x,1)<n) then 
    info = psb_err_input_asize_small_i_
    ierr(1) = 3; ierr(2) = n; 
    call psb_errpush(info,name,i_err=ierr)
    goto 9999
  end if

  if (size(y,1)<m) then 
    info = psb_err_input_asize_small_i_
    ierr(1) = 5; ierr(2) = m; 
    call psb_errpush(info,name,i_err=ierr)
    goto 9999
  end if


  call psb_d_scsr_csmv_inner(a%nnerws,m,n,alpha,&
       & a%nerwids,a%irp,a%ja,a%val,&
       & x,beta,y,tra,ctra) 

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)
  return

contains
  
  subroutine psb_d_scsr_csmv_inner(nnerws,m,n,alpha,nerwids,irp,ja,val,&
       & x,beta,y,tra,ctra) 
    integer(psb_ipk_), intent(in)   :: nnerws,m,n,nerwids(*),irp(*),ja(*)
    real(psb_dpk_), intent(in)      :: alpha, beta, x(*),val(*)
    real(psb_dpk_), intent(inout)   :: y(*)
    logical, intent(in)             :: tra, ctra


    integer(psb_ipk_) :: i,j,k, ir, jc, inerw
    real(psb_dpk_) :: acc

    if (alpha == dzero) then
      ! If we are here, beta is one, nothing to do.
      return 
    end if


    if ((.not.tra).and.(.not.ctra)) then 
      
      if (alpha == done) then
        do inerw = 1, nnerws
          i    = nerwids(inerw)
          acc  = dzero
          do j=irp(i), irp(i+1)-1
            acc  = acc + val(j) * x(ja(j))          
          enddo
          y(i) = y(i) + acc
        end do
        
      else if (alpha == -done) then 
        
        do inerw = 1, nnerws
          i    = nerwids(inerw)
          acc  = dzero
          do j=irp(i), irp(i+1)-1
            acc  = acc + val(j) * x(ja(j))          
          enddo
          y(i) = y(i) -acc
        end do
        
      else 
        
        do inerw = 1, nnerws
          i    = nerwids(inerw)
          acc  = dzero
          do j=irp(i), irp(i+1)-1
            acc  = acc + val(j) * x(ja(j))          
          enddo
          y(i) = y(i) + alpha*acc
        end do
        
      end if
      

    else if (tra) then 

      if (alpha == done) then

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir) = y(ir) +  val(j)*x(i)
          end do
        enddo

      else if (alpha == -done) then

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir) = y(ir) -  val(j)*x(i)
          end do
        enddo

      else                    

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir) = y(ir) + alpha*val(j)*x(i)
          end do
        enddo

      end if

    else if (ctra) then 


      if (alpha == done) then

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir) = y(ir) +  (val(j))*x(i)
          end do
        enddo

      else if (alpha == -done) then

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir) = y(ir) -  (val(j))*x(i)
          end do
        enddo

      else                    

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir) = y(ir) + alpha*(val(j))*x(i)
          end do
        enddo

      end if

    endif

  end subroutine psb_d_scsr_csmv_inner

end subroutine psb_d_scsr_csmv

subroutine psb_d_scsr_csmm(alpha,a,x,beta,y,info,trans) 
  use psb_error_mod
  use psb_string_mod
  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_csmm
  implicit none 
  class(psb_d_scsr_sparse_mat), intent(in) :: a
  real(psb_dpk_), intent(in)          :: alpha, beta, x(:,:)
  real(psb_dpk_), intent(inout)       :: y(:,:)
  integer(psb_ipk_), intent(out)                :: info
  character, optional, intent(in)     :: trans

  character :: trans_
  integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc, nc
  real(psb_dpk_), allocatable  :: acc(:)
  logical   :: tra, ctra
  integer(psb_ipk_) :: err_act
  integer(psb_ipk_) :: ierr(5)
  character(len=20)  :: name='d_scsr_csmm'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)


  ! This whole data structure is for the sake of a special
  ! case with beta==one and A non unit, revert to base otherwise. 
  if ((beta /= done).or.(a%is_unit())) then
    call a%psb_d_csr_sparse_mat%csmm(alpha,x,beta,y,info,trans)
    if (info /= psb_success_) then
      info = psb_err_internal_error_
      call psb_errpush(info,name)
      goto 9999
    end if
  end if

  if (present(trans)) then
    trans_ = trans
  else
    trans_ = 'N'
  end if

  if (.not.a%is_asb()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  tra  = (psb_toupper(trans_) == 'T')
  ctra = (psb_toupper(trans_) == 'C')

  if (tra.or.ctra) then 
    m = a%get_ncols()
    n = a%get_nrows()
  else
    n = a%get_ncols()
    m = a%get_nrows()
  end if

  if (size(x,1)<n) then 
    info = psb_err_input_asize_small_i_
    ierr(1) = 3; ierr(2) = n; 
    call psb_errpush(info,name,i_err=ierr)
    goto 9999
  end if

  if (size(y,1)<m) then 
    info = psb_err_input_asize_small_i_
    ierr(1) = 5; ierr(2) = m; 
    call psb_errpush(info,name,i_err=ierr)
    goto 9999
  end if

  nc = min(size(x,2) , size(y,2) )

  allocate(acc(nc), stat=info)
  if(info /= psb_success_) then
    info=psb_err_from_subroutine_
    call psb_errpush(info,name,a_err='allocate')
    goto 9999
  end if
  
  call  psb_d_scsr_csmm_inner(a%nnerws,m,n,nc,alpha,&
       & a%nerwids,a%irp,a%ja,a%val, &
       & x,size(x,1,kind=psb_ipk_), &
       & beta,y,size(y,1,kind=psb_ipk_),tra,ctra,acc) 


  call psb_erractionrestore(err_act)
  return
9999 call psb_error_handler(err_act)
  return

contains
  subroutine psb_d_scsr_csmm_inner(nnerws,m,n,nc,alpha,&
       & nerwids,irp,ja,val,&
       & x,ldx,beta,y,ldy,tra,ctra,acc) 
    integer(psb_ipk_), intent(in)   ::  nnerws,m,n,nerwids(*),&
         & ldx,ldy,nc,irp(*),ja(*)
    real(psb_dpk_), intent(in)      :: alpha, beta, x(ldx,*),val(*)
    real(psb_dpk_), intent(inout)   :: y(ldy,*)
    logical, intent(in)             :: tra,ctra

    real(psb_dpk_), intent(inout)   :: acc(*)
    integer(psb_ipk_) :: i,j,k, ir, jc, inerw


    if (alpha == dzero) then
      ! If we are here, beta is one, nothing to do.
      return 
    end if

    if ((.not.tra).and.(.not.ctra)) then 

      if (alpha == done) then 
        do inerw = 1, nnerws
          i    = nerwids(inerw)
          acc(1:nc)  = dzero
          do j=irp(i), irp(i+1)-1
            acc(1:nc)  = acc(1:nc) + val(j) * x(ja(j),1:nc)          
          enddo
          y(i,1:nc) = y(i,1:nc) + acc(1:nc)
        end do

      else if (alpha == -done) then 

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          acc(1:nc)  = dzero
          do j=irp(i), irp(i+1)-1
            acc(1:nc)  = acc(1:nc) + val(j) * x(ja(j),1:nc)          
          enddo
          y(i,1:nc) = y(i,1:nc) -acc(1:nc)
        end do
        
      else 
        
        do inerw = 1, nnerws
          i    = nerwids(inerw)
          acc(1:nc)  = dzero
          do j=irp(i), irp(i+1)-1
            acc(1:nc)  = acc(1:nc) + val(j) * x(ja(j),1:nc)          
          enddo
          y(i,1:nc) = y(i,1:nc) + alpha*acc(1:nc)
        end do
        
      end if
      
    else if (tra) then 

      if (alpha == done) then

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir,1:nc) = y(ir,1:nc) +  val(j)*x(i,1:nc)
          end do
        enddo

      else if (alpha == -done) then

        do inerw = 1, nnerws
          i    = nerwids(inerw)     
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir,1:nc) = y(ir,1:nc) -  val(j)*x(i,1:nc)
          end do
        enddo

      else                    

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir,1:nc) = y(ir,1:nc) + alpha*val(j)*x(i,1:nc)
          end do
        enddo

      end if

    else if (ctra) then 

      if (alpha == done) then

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir,1:nc) = y(ir,1:nc) +  (val(j))*x(i,1:nc)
          end do
        enddo

      else if (alpha == -done) then

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir,1:nc) = y(ir,1:nc) -  (val(j))*x(i,1:nc)
          end do
        enddo

      else                    

        do inerw = 1, nnerws
          i    = nerwids(inerw)
          do j=irp(i), irp(i+1)-1
            ir = ja(j)
            y(ir,1:nc) = y(ir,1:nc) + alpha*(val(j))*x(i,1:nc)
          end do
        enddo

      end if

    endif
  end subroutine psb_d_scsr_csmm_inner

end subroutine psb_d_scsr_csmm


!!$subroutine psb_d_scsr_cssv(alpha,a,x,beta,y,info,trans) 
!!$  use psb_error_mod
!!$  use psb_string_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_cssv
!!$  implicit none 
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  real(psb_dpk_), intent(in)          :: alpha, beta, x(:)
!!$  real(psb_dpk_), intent(inout)       :: y(:)
!!$  integer(psb_ipk_), intent(out)                :: info
!!$  character, optional, intent(in)     :: trans
!!$
!!$  character :: trans_
!!$  integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc
!!$  real(psb_dpk_) :: acc
!!$  real(psb_dpk_), allocatable :: tmp(:)
!!$  logical   :: tra,ctra
!!$  integer(psb_ipk_) :: err_act
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='d_scsr_cssv'
!!$  logical, parameter :: debug=.false.
!!$
!!$  info = psb_success_
!!$  call psb_erractionsave(err_act)
!!$  if (present(trans)) then
!!$    trans_ = trans
!!$  else
!!$    trans_ = 'N'
!!$  end if
!!$  if (.not.a%is_asb()) then 
!!$    info = psb_err_invalid_mat_state_
!!$    call psb_errpush(info,name)
!!$    goto 9999
!!$  endif
!!$
!!$  tra  = (psb_toupper(trans_) == 'T')
!!$  ctra = (psb_toupper(trans_) == 'C')
!!$  m = a%get_nrows()
!!$
!!$  if (.not. (a%is_triangle())) then 
!!$    info = psb_err_invalid_mat_state_
!!$    call psb_errpush(info,name)
!!$    goto 9999
!!$  end if
!!$
!!$  if (size(x)<m) then 
!!$    info = psb_err_input_asize_small_i_
!!$    ierr(1) = 3; ierr(2) = m; 
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$
!!$  if (size(y)<m) then 
!!$    info = psb_err_input_asize_small_i_ 
!!$    ierr(1) = 5; ierr(2) = m; 
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$  
!!$  if (alpha == dzero) then
!!$    if (beta == dzero) then
!!$      do i = 1, m
!!$        y(i) = dzero
!!$      enddo
!!$    else
!!$      do  i = 1, m
!!$        y(i) = beta*y(i)
!!$      end do
!!$    endif
!!$    return
!!$  end if
!!$
!!$  if (beta == dzero) then 
!!$
!!$    call inner_scsrsv(tra,ctra,a%is_lower(),a%is_unit(),a%get_nrows(),&
!!$         & a%irp,a%ja,a%val,x,y) 
!!$    if (alpha == done) then 
!!$      ! do nothing
!!$    else if (alpha == -done) then 
!!$      do  i = 1, m
!!$        y(i) = -y(i)
!!$      end do
!!$    else
!!$      do  i = 1, m
!!$        y(i) = alpha*y(i)
!!$      end do
!!$    end if
!!$  else 
!!$    allocate(tmp(m), stat=info) 
!!$    if (info /= psb_success_) then 
!!$      return
!!$    end if
!!$
!!$    call inner_scsrsv(tra,ctra,a%is_lower(),a%is_unit(),a%get_nrows(),&
!!$         & a%irp,a%ja,a%val,x,tmp) 
!!$
!!$    call psb_geaxpby(m,alpha,tmp,beta,y,info)
!!$
!!$  end if
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$contains 
!!$
!!$  subroutine inner_scsrsv(tra,ctra,lower,unit,n,irp,ja,val,x,y) 
!!$    implicit none 
!!$    logical, intent(in)            :: tra,ctra,lower,unit  
!!$    integer(psb_ipk_), intent(in)            :: irp(*), ja(*),n
!!$    real(psb_dpk_), intent(in)  :: val(*)
!!$    real(psb_dpk_), intent(in)  :: x(*)
!!$    real(psb_dpk_), intent(out) :: y(*)
!!$
!!$    integer(psb_ipk_) :: i,j,k,m, ir, jc
!!$    real(psb_dpk_) :: acc
!!$
!!$    if ((.not.tra).and.(.not.ctra)) then 
!!$
!!$      if (lower) then 
!!$        if (unit) then 
!!$          do i=1, n
!!$            acc = dzero 
!!$            do j=irp(i), irp(i+1)-1
!!$              acc = acc + val(j)*y(ja(j))
!!$            end do
!!$            y(i) = x(i) - acc
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=1, n
!!$            acc = dzero 
!!$            do j=irp(i), irp(i+1)-2
!!$              acc = acc + val(j)*y(ja(j))
!!$            end do
!!$            y(i) = (x(i) - acc)/val(irp(i+1)-1)
!!$          end do
!!$        end if
!!$      else if (.not.lower) then 
!!$
!!$        if (unit) then 
!!$          do i=n, 1, -1 
!!$            acc = dzero 
!!$            do j=irp(i), irp(i+1)-1
!!$              acc = acc + val(j)*y(ja(j))
!!$            end do
!!$            y(i) = x(i) - acc
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=n, 1, -1 
!!$            acc = dzero 
!!$            do j=irp(i)+1, irp(i+1)-1
!!$              acc = acc + val(j)*y(ja(j))
!!$            end do
!!$            y(i) = (x(i) - acc)/val(irp(i))
!!$          end do
!!$        end if
!!$
!!$      end if
!!$
!!$    else if (tra) then 
!!$
!!$      do i=1, n
!!$        y(i) = x(i)
!!$      end do
!!$
!!$      if (lower) then 
!!$        if (unit) then 
!!$          do i=n, 1, -1
!!$            acc = y(i) 
!!$            do j=irp(i), irp(i+1)-1
!!$              jc    = ja(j)
!!$              y(jc) = y(jc) - val(j)*acc 
!!$            end do
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=n, 1, -1
!!$            y(i) = y(i)/val(irp(i+1)-1)
!!$            acc  = y(i) 
!!$            do j=irp(i), irp(i+1)-2
!!$              jc    = ja(j)
!!$              y(jc) = y(jc) - val(j)*acc 
!!$            end do
!!$          end do
!!$        end if
!!$      else if (.not.lower) then 
!!$
!!$        if (unit) then 
!!$          do i=1, n
!!$            acc  = y(i) 
!!$            do j=irp(i), irp(i+1)-1
!!$              jc    = ja(j)
!!$              y(jc) = y(jc) - val(j)*acc 
!!$            end do
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=1, n
!!$            y(i) = y(i)/val(irp(i))
!!$            acc  = y(i) 
!!$            do j=irp(i)+1, irp(i+1)-1
!!$              jc    = ja(j)
!!$              y(jc) = y(jc) - val(j)*acc 
!!$            end do
!!$          end do
!!$        end if
!!$
!!$      end if
!!$
!!$    else if (ctra) then 
!!$
!!$      do i=1, n
!!$        y(i) = x(i)
!!$      end do
!!$
!!$      if (lower) then 
!!$        if (unit) then 
!!$          do i=n, 1, -1
!!$            acc = y(i) 
!!$            do j=irp(i), irp(i+1)-1
!!$              jc    = ja(j)
!!$              y(jc) = y(jc) - (val(j))*acc 
!!$            end do
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=n, 1, -1
!!$            y(i) = y(i)/val(irp(i+1)-1)
!!$            acc  = y(i) 
!!$            do j=irp(i), irp(i+1)-2
!!$              jc    = ja(j)
!!$              y(jc) = y(jc) - (val(j))*acc 
!!$            end do
!!$          end do
!!$        end if
!!$      else if (.not.lower) then 
!!$
!!$        if (unit) then 
!!$          do i=1, n
!!$            acc  = y(i) 
!!$            do j=irp(i), irp(i+1)-1
!!$              jc    = ja(j)
!!$              y(jc) = y(jc) - (val(j))*acc 
!!$            end do
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=1, n
!!$            y(i) = y(i)/val(irp(i))
!!$            acc  = y(i) 
!!$            do j=irp(i)+1, irp(i+1)-1
!!$              jc    = ja(j)
!!$              y(jc) = y(jc) - (val(j))*acc 
!!$            end do
!!$          end do
!!$        end if
!!$
!!$      end if
!!$    end if
!!$  end subroutine inner_scsrsv
!!$
!!$end subroutine psb_d_scsr_cssv
!!$
!!$
!!$
!!$subroutine psb_d_scsr_cssm(alpha,a,x,beta,y,info,trans) 
!!$  use psb_error_mod
!!$  use psb_string_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_cssm
!!$  implicit none 
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  real(psb_dpk_), intent(in)          :: alpha, beta, x(:,:)
!!$  real(psb_dpk_), intent(inout)       :: y(:,:)
!!$  integer(psb_ipk_), intent(out)                :: info
!!$  character, optional, intent(in)     :: trans
!!$
!!$  character :: trans_
!!$  integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc, nc
!!$  real(psb_dpk_) :: acc
!!$  real(psb_dpk_), allocatable :: tmp(:,:)
!!$  logical   :: tra, ctra
!!$  integer(psb_ipk_) :: err_act
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='d_scsr_cssm'
!!$  logical, parameter :: debug=.false.
!!$
!!$  info = psb_success_
!!$  call psb_erractionsave(err_act)
!!$
!!$  if (present(trans)) then
!!$    trans_ = trans
!!$  else
!!$    trans_ = 'N'
!!$  end if
!!$  if (.not.a%is_asb()) then 
!!$    info = psb_err_invalid_mat_state_
!!$    call psb_errpush(info,name)
!!$    goto 9999
!!$  endif
!!$
!!$
!!$  tra  = (psb_toupper(trans_) == 'T')
!!$  ctra = (psb_toupper(trans_) == 'C')
!!$
!!$  m   = a%get_nrows()
!!$  nc  = min(size(x,2) , size(y,2)) 
!!$
!!$  if (.not. (a%is_triangle())) then 
!!$    info = psb_err_invalid_mat_state_
!!$    call psb_errpush(info,name)
!!$    goto 9999
!!$  end if
!!$
!!$
!!$  if (alpha == dzero) then
!!$    if (beta == dzero) then
!!$      do i = 1, m
!!$        y(i,:) = dzero
!!$      enddo
!!$    else
!!$      do  i = 1, m
!!$        y(i,:) = beta*y(i,:)
!!$      end do
!!$    endif
!!$    return
!!$  end if
!!$
!!$  if (beta == dzero) then 
!!$    call inner_scsrsm(tra,ctra,a%is_lower(),a%is_unit(),a%get_nrows(),nc,&
!!$         & a%irp,a%ja,a%val,x,size(x,1,kind=psb_ipk_),y,size(y,1,kind=psb_ipk_),info) 
!!$    do  i = 1, m
!!$      y(i,1:nc) = alpha*y(i,1:nc)
!!$    end do
!!$  else 
!!$    allocate(tmp(m,nc), stat=info) 
!!$    if(info /= psb_success_) then
!!$      info=psb_err_from_subroutine_
!!$      call psb_errpush(info,name,a_err='allocate')
!!$      goto 9999
!!$    end if
!!$
!!$    call inner_scsrsm(tra,ctra,a%is_lower(),a%is_unit(),a%get_nrows(),nc,&
!!$         & a%irp,a%ja,a%val,x,size(x,1,kind=psb_ipk_),tmp,size(tmp,1,kind=psb_ipk_),info) 
!!$    do  i = 1, m
!!$      y(i,1:nc) = alpha*tmp(i,1:nc) + beta*y(i,1:nc)
!!$    end do
!!$  end if
!!$
!!$  if(info /= psb_success_) then
!!$    info=psb_err_from_subroutine_
!!$    call psb_errpush(info,name,a_err='inner_scsrsm')
!!$    goto 9999
!!$  end if
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$
!!$contains 
!!$
!!$  subroutine inner_scsrsm(tra,ctra,lower,unit,nr,nc,&
!!$       & irp,ja,val,x,ldx,y,ldy,info) 
!!$    implicit none 
!!$    logical, intent(in)              :: tra,ctra,lower,unit
!!$    integer(psb_ipk_), intent(in)              :: nr,nc,ldx,ldy,irp(*),ja(*)
!!$    real(psb_dpk_), intent(in)    :: val(*), x(ldx,*)
!!$    real(psb_dpk_), intent(out)   :: y(ldy,*)
!!$    integer(psb_ipk_), intent(out)             :: info
!!$    integer(psb_ipk_) :: i,j,k,m, ir, jc
!!$    real(psb_dpk_), allocatable  :: acc(:)
!!$
!!$    info = psb_success_
!!$    allocate(acc(nc), stat=info)
!!$    if(info /= psb_success_) then
!!$      info=psb_err_from_subroutine_
!!$      return
!!$    end if
!!$
!!$
!!$    if ((.not.tra).and.(.not.ctra)) then 
!!$      if (lower) then 
!!$        if (unit) then 
!!$          do i=1, nr
!!$            acc = dzero 
!!$            do j=irp(i), irp(i+1)-1
!!$              acc = acc + val(j)*y(ja(j),1:nc)
!!$            end do
!!$            y(i,1:nc) = x(i,1:nc) - acc
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=1, nr
!!$            acc = dzero 
!!$            do j=irp(i), irp(i+1)-2
!!$              acc = acc + val(j)*y(ja(j),1:nc)
!!$            end do
!!$            y(i,1:nc) = (x(i,1:nc) - acc)/val(irp(i+1)-1)
!!$          end do
!!$        end if
!!$      else if (.not.lower) then 
!!$
!!$        if (unit) then 
!!$          do i=nr, 1, -1 
!!$            acc = dzero 
!!$            do j=irp(i), irp(i+1)-1
!!$              acc = acc + val(j)*y(ja(j),1:nc)
!!$            end do
!!$            y(i,1:nc) = x(i,1:nc) - acc
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=nr, 1, -1 
!!$            acc = dzero 
!!$            do j=irp(i)+1, irp(i+1)-1
!!$              acc = acc + val(j)*y(ja(j),1:nc)
!!$            end do
!!$            y(i,1:nc) = (x(i,1:nc) - acc)/val(irp(i))
!!$          end do
!!$        end if
!!$
!!$      end if
!!$
!!$    else if (tra) then 
!!$
!!$      do i=1, nr
!!$        y(i,1:nc) = x(i,1:nc)
!!$      end do
!!$
!!$      if (lower) then 
!!$        if (unit) then 
!!$          do i=nr, 1, -1
!!$            acc = y(i,1:nc) 
!!$            do j=irp(i), irp(i+1)-1
!!$              jc    = ja(j)
!!$              y(jc,1:nc) = y(jc,1:nc) - val(j)*acc 
!!$            end do
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=nr, 1, -1
!!$            y(i,1:nc) = y(i,1:nc)/val(irp(i+1)-1)
!!$            acc  = y(i,1:nc) 
!!$            do j=irp(i), irp(i+1)-2
!!$              jc    = ja(j)
!!$              y(jc,1:nc) = y(jc,1:nc) - val(j)*acc 
!!$            end do
!!$          end do
!!$        end if
!!$      else if (.not.lower) then 
!!$
!!$        if (unit) then 
!!$          do i=1, nr
!!$            acc  = y(i,1:nc) 
!!$            do j=irp(i), irp(i+1)-1
!!$              jc    = ja(j)
!!$              y(jc,1:nc) = y(jc,1:nc) - val(j)*acc 
!!$            end do
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=1, nr
!!$            y(i,1:nc) = y(i,1:nc)/val(irp(i))
!!$            acc    = y(i,1:nc) 
!!$            do j=irp(i)+1, irp(i+1)-1
!!$              jc      = ja(j)
!!$              y(jc,1:nc) = y(jc,1:nc) - val(j)*acc 
!!$            end do
!!$          end do
!!$        end if
!!$
!!$      end if
!!$
!!$    else if (ctra) then 
!!$
!!$      do i=1, nr
!!$        y(i,1:nc) = x(i,1:nc)
!!$      end do
!!$
!!$      if (lower) then 
!!$        if (unit) then 
!!$          do i=nr, 1, -1
!!$            acc = y(i,1:nc) 
!!$            do j=irp(i), irp(i+1)-1
!!$              jc    = ja(j)
!!$              y(jc,1:nc) = y(jc,1:nc) - (val(j))*acc 
!!$            end do
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=nr, 1, -1
!!$            y(i,1:nc) = y(i,1:nc)/(val(irp(i+1)-1))
!!$            acc  = y(i,1:nc) 
!!$            do j=irp(i), irp(i+1)-2
!!$              jc    = ja(j)
!!$              y(jc,1:nc) = y(jc,1:nc) - (val(j))*acc 
!!$            end do
!!$          end do
!!$        end if
!!$      else if (.not.lower) then 
!!$
!!$        if (unit) then 
!!$          do i=1, nr
!!$            acc  = y(i,1:nc) 
!!$            do j=irp(i), irp(i+1)-1
!!$              jc    = ja(j)
!!$              y(jc,1:nc) = y(jc,1:nc) - (val(j))*acc 
!!$            end do
!!$          end do
!!$        else if (.not.unit) then 
!!$          do i=1, nr
!!$            y(i,1:nc) = y(i,1:nc)/(val(irp(i)))
!!$            acc    = y(i,1:nc) 
!!$            do j=irp(i)+1, irp(i+1)-1
!!$              jc      = ja(j)
!!$              y(jc,1:nc) = y(jc,1:nc) - (val(j))*acc 
!!$            end do
!!$          end do
!!$        end if
!!$
!!$      end if
!!$    end if
!!$  end subroutine inner_scsrsm
!!$
!!$end subroutine psb_d_scsr_cssm
!!$
!!$function psb_d_scsr_maxval(a) result(res)
!!$  use psb_error_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_maxval
!!$  implicit none 
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  real(psb_dpk_)         :: res
!!$
!!$  integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc, nc, info
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='d_scsr_maxval'
!!$  logical, parameter :: debug=.false.
!!$
!!$
!!$  res = dzero
!!$  nnz = a%get_nzeros()
!!$  if (allocated(a%val)) then 
!!$    nnz = min(nnz,size(a%val))
!!$    res = maxval(abs(a%val(1:nnz)))
!!$  end if
!!$end function psb_d_scsr_maxval
!!$
!!$function psb_d_scsr_csnmi(a) result(res)
!!$  use psb_error_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_csnmi
!!$  implicit none 
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  real(psb_dpk_)         :: res
!!$
!!$  integer(psb_ipk_) :: i,j,k,m,n, nr, ir, jc, nc
!!$  real(psb_dpk_) :: acc
!!$  logical   :: tra
!!$  integer(psb_ipk_) :: err_act
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='d_csnmi'
!!$  logical, parameter :: debug=.false.
!!$
!!$
!!$  res = dzero
!!$ 
!!$  do i = 1, a%get_nrows()
!!$    acc = dzero
!!$    do j=a%irp(i),a%irp(i+1)-1  
!!$      acc = acc + abs(a%val(j))
!!$    end do
!!$    res = max(res,acc)
!!$  end do
!!$
!!$end function psb_d_scsr_csnmi
!!$
!!$function psb_d_scsr_csnm1(a) result(res)
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_csnm1
!!$
!!$  implicit none 
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  real(psb_dpk_)         :: res
!!$
!!$  integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc, nc, info
!!$  real(psb_dpk_) :: acc
!!$  real(psb_dpk_), allocatable :: vt(:)
!!$  logical   :: tra
!!$  integer(psb_ipk_) :: err_act
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='d_scsr_csnm1'
!!$  logical, parameter :: debug=.false.
!!$
!!$
!!$  res = dzero
!!$  nnz = a%get_nzeros()
!!$  m = a%get_nrows()
!!$  n = a%get_ncols()
!!$  allocate(vt(n),stat=info)
!!$  if (info /= 0) return
!!$  vt(:) = dzero
!!$  do i=1, m
!!$    do j=a%irp(i),a%irp(i+1)-1
!!$      k = a%ja(j)
!!$      vt(k) = vt(k) + abs(a%val(j))
!!$    end do
!!$  end do
!!$  res = maxval(vt(1:n))
!!$  deallocate(vt,stat=info)
!!$
!!$  return
!!$
!!$end function psb_d_scsr_csnm1
!!$
!!$subroutine psb_d_scsr_rowsum(d,a) 
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_rowsum
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  real(psb_dpk_), intent(out)             :: d(:)
!!$
!!$  integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc, nc
!!$  real(psb_dpk_) :: acc
!!$  real(psb_dpk_), allocatable :: vt(:)
!!$  logical   :: tra
!!$  integer(psb_ipk_) :: err_act, info
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='rowsum'
!!$  logical, parameter :: debug=.false.
!!$
!!$  call psb_erractionsave(err_act)
!!$
!!$  m = a%get_nrows()
!!$  if (size(d) < m) then 
!!$    info=psb_err_input_asize_small_i_
!!$    ierr(1) = 1; ierr(2) = size(d); ierr(3) = m
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$
!!$  do i = 1, a%get_nrows()
!!$    d(i) = dzero
!!$    do j=a%irp(i),a%irp(i+1)-1  
!!$      d(i) = d(i) + (a%val(j))
!!$    end do
!!$  end do
!!$  
!!$  if (a%is_unit()) then 
!!$    do i=1, m
!!$      d(i) = d(i) + done
!!$    end do
!!$  end if
!!$
!!$  return
!!$  call psb_erractionrestore(err_act)
!!$  return  
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_rowsum
!!$
!!$subroutine psb_d_scsr_arwsum(d,a) 
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_arwsum
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  real(psb_dpk_), intent(out)              :: d(:)
!!$
!!$  integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc, nc
!!$  real(psb_dpk_) :: acc
!!$  real(psb_dpk_), allocatable :: vt(:)
!!$  logical   :: tra
!!$  integer(psb_ipk_) :: err_act, info
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='rowsum'
!!$  logical, parameter :: debug=.false.
!!$
!!$  call psb_erractionsave(err_act)
!!$
!!$  m = a%get_nrows()
!!$  if (size(d) < m) then 
!!$    info=psb_err_input_asize_small_i_
!!$    ierr(1) = 1; ierr(2) = size(d); ierr(3) = m
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$
!!$
!!$  do i = 1, a%get_nrows()
!!$    d(i) = dzero
!!$    do j=a%irp(i),a%irp(i+1)-1  
!!$      d(i) = d(i) + abs(a%val(j))
!!$    end do
!!$  end do
!!$  
!!$  if (a%is_unit()) then 
!!$    do i=1, m
!!$      d(i) = d(i) + done
!!$    end do
!!$  end if
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return  
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_arwsum
!!$
!!$subroutine psb_d_scsr_colsum(d,a) 
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_colsum
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  real(psb_dpk_), intent(out)              :: d(:)
!!$
!!$  integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc, nc
!!$  real(psb_dpk_) :: acc
!!$  real(psb_dpk_), allocatable :: vt(:)
!!$  logical   :: tra
!!$  integer(psb_ipk_) :: err_act, info
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='colsum'
!!$  logical, parameter :: debug=.false.
!!$
!!$  call psb_erractionsave(err_act)
!!$
!!$  m = a%get_nrows()
!!$  n = a%get_ncols()
!!$  if (size(d) < n) then 
!!$    info=psb_err_input_asize_small_i_
!!$    ierr(1) = 1; ierr(2) = size(d); ierr(3) = n
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$
!!$  d   = dzero
!!$
!!$  do i=1, m
!!$    do j=a%irp(i),a%irp(i+1)-1
!!$      k = a%ja(j)
!!$      d(k) = d(k) + (a%val(j))
!!$    end do
!!$  end do
!!$  
!!$  if (a%is_unit()) then 
!!$    do i=1, n
!!$      d(i) = d(i) + done
!!$    end do
!!$  end if
!!$
!!$  return
!!$  call psb_erractionrestore(err_act)
!!$  return  
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_colsum
!!$
!!$subroutine psb_d_scsr_aclsum(d,a) 
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_aclsum
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  real(psb_dpk_), intent(out)              :: d(:)
!!$
!!$  integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc, nc
!!$  real(psb_dpk_) :: acc
!!$  real(psb_dpk_), allocatable :: vt(:)
!!$  logical   :: tra
!!$  integer(psb_ipk_) :: err_act, info
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='aclsum'
!!$  logical, parameter :: debug=.false.
!!$
!!$  call psb_erractionsave(err_act)
!!$
!!$  m = a%get_nrows()
!!$  n = a%get_ncols()
!!$  if (size(d) < n) then 
!!$    info=psb_err_input_asize_small_i_
!!$    ierr(1) = 1; ierr(2) = size(d); ierr(3) = n
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$
!!$  d   = dzero
!!$
!!$  do i=1, m
!!$    do j=a%irp(i),a%irp(i+1)-1
!!$      k = a%ja(j)
!!$      d(k) = d(k) + abs(a%val(j))
!!$    end do
!!$  end do
!!$  
!!$  if (a%is_unit()) then 
!!$    do i=1, n
!!$      d(i) = d(i) + done
!!$    end do
!!$  end if
!!$
!!$  return
!!$  call psb_erractionrestore(err_act)
!!$  return  
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_aclsum
!!$
!!$subroutine psb_d_scsr_get_diag(a,d,info) 
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_get_diag
!!$  implicit none 
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  real(psb_dpk_), intent(out)     :: d(:)
!!$  integer(psb_ipk_), intent(out)            :: info
!!$
!!$  integer(psb_ipk_) :: err_act, mnm, i, j, k
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='get_diag'
!!$  logical, parameter :: debug=.false.
!!$
!!$  info  = psb_success_
!!$  call psb_erractionsave(err_act)
!!$
!!$  mnm = min(a%get_nrows(),a%get_ncols())
!!$  if (size(d) < mnm) then 
!!$    info=psb_err_input_asize_invalid_i_
!!$    ierr(1) = 2; ierr(2) = size(d); 
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$
!!$
!!$  if (a%is_unit()) then 
!!$    d(1:mnm) = done
!!$  else
!!$    do i=1, mnm
!!$      d(i) = dzero
!!$      do k=a%irp(i),a%irp(i+1)-1
!!$        j=a%ja(k)
!!$        if ((j == i) .and.(j <= mnm )) then 
!!$          d(i) = a%val(k)
!!$        endif
!!$      enddo
!!$    end do
!!$  end if
!!$  do i=mnm+1,size(d) 
!!$    d(i) = dzero
!!$  end do
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_get_diag
!!$
!!$
!!$subroutine psb_d_scsr_scal(d,a,info,side) 
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_scal
!!$  use psb_string_mod
!!$  implicit none 
!!$  class(psb_d_scsr_sparse_mat), intent(inout) :: a
!!$  real(psb_dpk_), intent(in)      :: d(:)
!!$  integer(psb_ipk_), intent(out)            :: info
!!$  character, intent(in), optional :: side
!!$
!!$  integer(psb_ipk_) :: err_act,mnm, i, j, m
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='scal'
!!$  character :: side_
!!$  logical   :: left 
!!$  logical, parameter :: debug=.false.
!!$
!!$  info  = psb_success_
!!$  call psb_erractionsave(err_act)
!!$
!!$  if (a%is_unit()) then 
!!$    call a%make_nonunit()
!!$  end if
!!$
!!$  side_ = 'L'
!!$  if (present(side)) then 
!!$    side_ = psb_toupper(side)
!!$  end if
!!$
!!$  left = (side_ == 'L')
!!$
!!$  if (left) then 
!!$    m = a%get_nrows()
!!$    if (size(d) < m) then 
!!$      info=psb_err_input_asize_invalid_i_
!!$      ierr(1) = 2; ierr(2) = size(d); 
!!$      call psb_errpush(info,name,i_err=ierr)
!!$      goto 9999
!!$    end if
!!$    
!!$    do i=1, m 
!!$      do j = a%irp(i), a%irp(i+1) -1 
!!$        a%val(j) = a%val(j) * d(i)
!!$      end do
!!$    enddo
!!$  else
!!$    m = a%get_ncols()
!!$    if (size(d) < m) then 
!!$      info=psb_err_input_asize_invalid_i_
!!$      ierr(1) = 2; ierr(2) = size(d); 
!!$      call psb_errpush(info,name,i_err=ierr)
!!$      goto 9999
!!$    end if
!!$    
!!$    do i=1,a%get_nzeros()
!!$      j        = a%ja(i)
!!$      a%val(i) = a%val(i) * d(j)
!!$    enddo
!!$  end if
!!$
!!$
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_scal
!!$
!!$
!!$subroutine psb_d_scsr_scals(d,a,info) 
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_scals
!!$  implicit none 
!!$  class(psb_d_scsr_sparse_mat), intent(inout) :: a
!!$  real(psb_dpk_), intent(in)      :: d
!!$  integer(psb_ipk_), intent(out)            :: info
!!$
!!$  integer(psb_ipk_) :: err_act,mnm, i, j, m
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='scal'
!!$  logical, parameter :: debug=.false.
!!$
!!$  info  = psb_success_
!!$  call psb_erractionsave(err_act)
!!$
!!$  if (a%is_unit()) then 
!!$    call a%make_nonunit()
!!$  end if
!!$
!!$  do i=1,a%get_nzeros()
!!$    a%val(i) = a%val(i) * d
!!$  enddo
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_scals
!!$



! == =================================== 
!
!
!
! Data management
!
!
!
!
!
! == ===================================   

!!$
!!$subroutine  psb_d_scsr_reallocate_nz(nz,a) 
!!$  use psb_error_mod
!!$  use psb_realloc_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_reallocate_nz
!!$  implicit none 
!!$  integer(psb_ipk_), intent(in) :: nz
!!$  class(psb_d_scsr_sparse_mat), intent(inout) :: a
!!$  integer(psb_ipk_) :: err_act, info
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='d_scsr_reallocate_nz'
!!$  logical, parameter :: debug=.false.
!!$
!!$  call psb_erractionsave(err_act)
!!$
!!$  call psb_realloc(nz,a%ja,info)
!!$  if (info == psb_success_) call psb_realloc(nz,a%val,info)
!!$  if (info == psb_success_) call psb_realloc(&
!!$       & max(nz,a%get_nrows()+1,a%get_ncols()+1),a%irp,info)
!!$  if (info /= psb_success_) then 
!!$    call psb_errpush(psb_err_alloc_dealloc_,name)
!!$    goto 9999
!!$  end if
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_reallocate_nz

subroutine psb_d_scsr_mold(a,b,info) 
  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_mold
  use psb_error_mod
  implicit none 
  class(psb_d_scsr_sparse_mat), intent(in)                  :: a
  class(psb_d_base_sparse_mat), intent(inout), allocatable :: b
  integer(psb_ipk_), intent(out)                    :: info
  integer(psb_ipk_) :: err_act
  integer(psb_ipk_) :: ierr(5)
  character(len=20)  :: name='scsr_mold'
  logical, parameter :: debug=.false.

  call psb_get_erraction(err_act)
  
  info = 0 
  if (allocated(b)) then 
    call b%free()
    deallocate(b,stat=info)
  end if
  if (info == 0) allocate(psb_d_scsr_sparse_mat :: b, stat=info)

  if (info /= 0) then 
    info = psb_err_alloc_dealloc_ 
    call psb_errpush(info, name)
    goto 9999
  end if
  return

9999 call psb_error_handler(err_act)
  return

end subroutine psb_d_scsr_mold

!!$subroutine  psb_d_scsr_allocate_mnnz(m,n,a,nz) 
!!$  use psb_error_mod
!!$  use psb_realloc_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_allocate_mnnz
!!$  implicit none 
!!$  integer(psb_ipk_), intent(in) :: m,n
!!$  class(psb_d_scsr_sparse_mat), intent(inout) :: a
!!$  integer(psb_ipk_), intent(in), optional :: nz
!!$  integer(psb_ipk_) :: err_act, info, nz_
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='allocate_mnz'
!!$  logical, parameter :: debug=.false.
!!$
!!$  call psb_erractionsave(err_act)
!!$  info = psb_success_
!!$  if (m < 0) then 
!!$    info = psb_err_iarg_neg_
!!$    ierr(1) = ione; ierr(2) = izero; 
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  endif
!!$  if (n < 0) then 
!!$    info = psb_err_iarg_neg_
!!$    ierr(1) = 2; ierr(2) = izero; 
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  endif
!!$  if (present(nz)) then 
!!$    nz_ = nz
!!$  else
!!$    nz_ = max(7*m,7*n,1)
!!$  end if
!!$  if (nz_ < 0) then 
!!$    info = psb_err_iarg_neg_
!!$    ierr(1) = 3; ierr(2) = izero; 
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  endif
!!$
!!$  if (info == psb_success_) call psb_realloc(m+1,a%irp,info)
!!$  if (info == psb_success_) call psb_realloc(nz_,a%ja,info)
!!$  if (info == psb_success_) call psb_realloc(nz_,a%val,info)
!!$  if (info == psb_success_) then 
!!$    a%irp=0
!!$    call a%set_nrows(m)
!!$    call a%set_ncols(n)
!!$    call a%set_bld()
!!$    call a%set_triangle(.false.)
!!$    call a%set_unit(.false.)
!!$    call a%set_dupl(psb_dupl_def_)
!!$  end if
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_allocate_mnnz
!!$
!!$
!!$subroutine psb_d_scsr_csgetptn(imin,imax,a,nz,ia,ja,info,&
!!$     & jmin,jmax,iren,append,nzin,rscale,cscale)
!!$  ! Output is always in  COO format 
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_error_mod
!!$  use psb_d_base_mat_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_csgetptn
!!$  implicit none
!!$
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  integer(psb_ipk_), intent(in)                  :: imin,imax
!!$  integer(psb_ipk_), intent(out)                 :: nz
!!$  integer(psb_ipk_), allocatable, intent(inout)  :: ia(:), ja(:)
!!$  integer(psb_ipk_),intent(out)                  :: info
!!$  logical, intent(in), optional        :: append
!!$  integer(psb_ipk_), intent(in), optional        :: iren(:)
!!$  integer(psb_ipk_), intent(in), optional        :: jmin,jmax, nzin
!!$  logical, intent(in), optional        :: rscale,cscale
!!$
!!$  logical :: append_, rscale_, cscale_ 
!!$  integer(psb_ipk_) :: nzin_, jmin_, jmax_, err_act, i
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='csget'
!!$  logical, parameter :: debug=.false.
!!$
!!$  call psb_erractionsave(err_act)
!!$  info = psb_success_
!!$
!!$  if (present(jmin)) then
!!$    jmin_ = jmin
!!$  else
!!$    jmin_ = 1
!!$  endif
!!$  if (present(jmax)) then
!!$    jmax_ = jmax
!!$  else
!!$    jmax_ = a%get_ncols()
!!$  endif
!!$
!!$  if ((imax<imin).or.(jmax_<jmin_)) then 
!!$    nz = 0
!!$    return
!!$  end if
!!$
!!$  if (present(append)) then
!!$    append_=append
!!$  else
!!$    append_=.false.
!!$  endif
!!$  if ((append_).and.(present(nzin))) then 
!!$    nzin_ = nzin
!!$  else
!!$    nzin_ = 0
!!$  endif
!!$  if (present(rscale)) then 
!!$    rscale_ = rscale
!!$  else
!!$    rscale_ = .false.
!!$  endif
!!$  if (present(cscale)) then 
!!$    cscale_ = cscale
!!$  else
!!$    cscale_ = .false.
!!$  endif
!!$  if ((rscale_.or.cscale_).and.(present(iren))) then 
!!$    info = psb_err_many_optional_arg_
!!$    call psb_errpush(info,name,a_err='iren (rscale.or.cscale)')
!!$    goto 9999
!!$  end if
!!$
!!$  call scsr_getptn(imin,imax,jmin_,jmax_,a,nz,ia,ja,nzin_,append_,info,iren)
!!$  
!!$  if (rscale_) then 
!!$    do i=nzin_+1, nzin_+nz
!!$      ia(i) = ia(i) - imin + 1
!!$    end do
!!$  end if
!!$  if (cscale_) then 
!!$    do i=nzin_+1, nzin_+nz
!!$      ja(i) = ja(i) - jmin_ + 1
!!$    end do
!!$  end if
!!$
!!$  if (info /= psb_success_) goto 9999
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$contains
!!$
!!$  subroutine scsr_getptn(imin,imax,jmin,jmax,a,nz,ia,ja,nzin,append,info,&
!!$       & iren)
!!$
!!$    use psb_const_mod
!!$    use psb_error_mod
!!$    use psb_realloc_mod
!!$    use psb_sort_mod
!!$    implicit none
!!$
!!$    class(psb_d_scsr_sparse_mat), intent(in)    :: a
!!$    integer(psb_ipk_) :: imin,imax,jmin,jmax
!!$    integer(psb_ipk_), intent(out)                 :: nz
!!$    integer(psb_ipk_), allocatable, intent(inout)  :: ia(:), ja(:)
!!$    integer(psb_ipk_), intent(in)                  :: nzin
!!$    logical, intent(in)                  :: append
!!$    integer(psb_ipk_) :: info
!!$    integer(psb_ipk_), optional                    :: iren(:)
!!$    integer(psb_ipk_) :: nzin_, nza, idx,i,j,k, nzt, irw, lrw
!!$    integer(psb_ipk_) :: debug_level, debug_unit
!!$    character(len=20) :: name='scsr_getptn'
!!$
!!$    debug_unit  = psb_get_debug_unit()
!!$    debug_level = psb_get_debug_level()
!!$
!!$    nza = a%get_nzeros()
!!$    irw = imin
!!$    lrw = min(imax,a%get_nrows())
!!$    if (irw<0) then 
!!$      info = psb_err_pivot_too_small_
!!$      return
!!$    end if
!!$
!!$    if (append) then 
!!$      nzin_ = nzin
!!$    else
!!$      nzin_ = 0
!!$    endif
!!$
!!$    nzt = a%irp(lrw+1)-a%irp(irw)
!!$    nz = 0 
!!$
!!$
!!$    call psb_ensure_size(nzin_+nzt,ia,info)
!!$    if (info == psb_success_) call psb_ensure_size(nzin_+nzt,ja,info)
!!$
!!$    if (info /= psb_success_) return
!!$    
!!$    if (present(iren)) then 
!!$      do i=irw, lrw
!!$        do j=a%irp(i), a%irp(i+1) - 1
!!$          if ((jmin <= a%ja(j)).and.(a%ja(j)<=jmax)) then 
!!$            nzin_ = nzin_ + 1
!!$            nz    = nz + 1
!!$            ia(nzin_)  = iren(i)
!!$            ja(nzin_)  = iren(a%ja(j))
!!$          end if
!!$        enddo
!!$      end do
!!$    else
!!$      do i=irw, lrw
!!$        do j=a%irp(i), a%irp(i+1) - 1
!!$          if ((jmin <= a%ja(j)).and.(a%ja(j)<=jmax)) then 
!!$            nzin_ = nzin_ + 1
!!$            nz    = nz + 1
!!$            ia(nzin_)  = (i)
!!$            ja(nzin_)  = (a%ja(j))
!!$          end if
!!$        enddo
!!$      end do
!!$    end if
!!$
!!$  end subroutine scsr_getptn
!!$  
!!$end subroutine psb_d_scsr_csgetptn
!!$
!!$
!!$subroutine psb_d_scsr_csgetrow(imin,imax,a,nz,ia,ja,val,info,&
!!$     & jmin,jmax,iren,append,nzin,rscale,cscale)
!!$  ! Output is always in  COO format 
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_error_mod
!!$  use psb_d_base_mat_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_csgetrow
!!$  implicit none
!!$
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  integer(psb_ipk_), intent(in)                  :: imin,imax
!!$  integer(psb_ipk_), intent(out)                 :: nz
!!$  integer(psb_ipk_), allocatable, intent(inout)  :: ia(:), ja(:)
!!$  real(psb_dpk_), allocatable,  intent(inout)    :: val(:)
!!$  integer(psb_ipk_),intent(out)                  :: info
!!$  logical, intent(in), optional        :: append
!!$  integer(psb_ipk_), intent(in), optional        :: iren(:)
!!$  integer(psb_ipk_), intent(in), optional        :: jmin,jmax, nzin
!!$  logical, intent(in), optional        :: rscale,cscale
!!$
!!$  logical :: append_, rscale_, cscale_ 
!!$  integer(psb_ipk_) :: nzin_, jmin_, jmax_, err_act, i
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='csget'
!!$  logical, parameter :: debug=.false.
!!$
!!$  call psb_erractionsave(err_act)
!!$  info = psb_success_
!!$  
!!$  if (present(jmin)) then
!!$    jmin_ = jmin
!!$  else
!!$    jmin_ = 1
!!$  endif
!!$  if (present(jmax)) then
!!$    jmax_ = jmax
!!$  else
!!$    jmax_ = a%get_ncols()
!!$  endif
!!$
!!$  if ((imax<imin).or.(jmax_<jmin_)) then 
!!$    nz = 0
!!$    return
!!$  end if
!!$
!!$  if (present(append)) then
!!$    append_=append
!!$  else
!!$    append_=.false.
!!$  endif
!!$  if ((append_).and.(present(nzin))) then 
!!$    nzin_ = nzin
!!$  else
!!$    nzin_ = 0
!!$  endif
!!$  if (present(rscale)) then 
!!$    rscale_ = rscale
!!$  else
!!$    rscale_ = .false.
!!$  endif
!!$  if (present(cscale)) then 
!!$    cscale_ = cscale
!!$  else
!!$    cscale_ = .false.
!!$  endif
!!$  if ((rscale_.or.cscale_).and.(present(iren))) then 
!!$    info = psb_err_many_optional_arg_
!!$    call psb_errpush(info,name,a_err='iren (rscale.or.cscale)')
!!$    goto 9999
!!$  end if
!!$
!!$  call scsr_getrow(imin,imax,jmin_,jmax_,a,nz,ia,ja,val,nzin_,append_,info,&
!!$       & iren)
!!$  
!!$  if (rscale_) then 
!!$    do i=nzin_+1, nzin_+nz
!!$      ia(i) = ia(i) - imin + 1
!!$    end do
!!$  end if
!!$  if (cscale_) then 
!!$    do i=nzin_+1, nzin_+nz
!!$      ja(i) = ja(i) - jmin_ + 1
!!$    end do
!!$  end if
!!$
!!$  if (info /= psb_success_) goto 9999
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$contains
!!$
!!$  subroutine scsr_getrow(imin,imax,jmin,jmax,a,nz,ia,ja,val,nzin,append,info,&
!!$       & iren)
!!$
!!$    use psb_const_mod
!!$    use psb_error_mod
!!$    use psb_realloc_mod
!!$    use psb_sort_mod
!!$    implicit none
!!$
!!$    class(psb_d_scsr_sparse_mat), intent(in)    :: a
!!$    integer(psb_ipk_) :: imin,imax,jmin,jmax
!!$    integer(psb_ipk_), intent(out)                 :: nz
!!$    integer(psb_ipk_), allocatable, intent(inout)  :: ia(:), ja(:)
!!$    real(psb_dpk_), allocatable,  intent(inout)    :: val(:)
!!$    integer(psb_ipk_), intent(in)                  :: nzin
!!$    logical, intent(in)                  :: append
!!$    integer(psb_ipk_) :: info
!!$    integer(psb_ipk_), optional                    :: iren(:)
!!$    integer(psb_ipk_) :: nzin_, nza, idx,i,j,k, nzt, irw, lrw
!!$    integer(psb_ipk_) :: debug_level, debug_unit
!!$    character(len=20) :: name='coo_getrow'
!!$
!!$    debug_unit  = psb_get_debug_unit()
!!$    debug_level = psb_get_debug_level()
!!$
!!$    nza = a%get_nzeros()
!!$    irw = imin
!!$    lrw = min(imax,a%get_nrows())
!!$    if (irw<0) then 
!!$      info = psb_err_pivot_too_small_
!!$      return
!!$    end if
!!$
!!$    if (append) then 
!!$      nzin_ = nzin
!!$    else
!!$      nzin_ = 0
!!$    endif
!!$
!!$    nzt = a%irp(lrw+1)-a%irp(irw)
!!$    nz = 0 
!!$
!!$
!!$    call psb_ensure_size(nzin_+nzt,ia,info)
!!$    if (info == psb_success_) call psb_ensure_size(nzin_+nzt,ja,info)
!!$    if (info == psb_success_) call psb_ensure_size(nzin_+nzt,val,info)
!!$
!!$    if (info /= psb_success_) return
!!$    
!!$    if (present(iren)) then 
!!$      do i=irw, lrw
!!$        do j=a%irp(i), a%irp(i+1) - 1
!!$          if ((jmin <= a%ja(j)).and.(a%ja(j)<=jmax)) then 
!!$            nzin_ = nzin_ + 1
!!$            nz    = nz + 1
!!$            val(nzin_) = a%val(j)
!!$            ia(nzin_)  = iren(i)
!!$            ja(nzin_)  = iren(a%ja(j))
!!$          end if
!!$        enddo
!!$      end do
!!$    else
!!$      do i=irw, lrw
!!$        do j=a%irp(i), a%irp(i+1) - 1
!!$          if ((jmin <= a%ja(j)).and.(a%ja(j)<=jmax)) then 
!!$            nzin_ = nzin_ + 1
!!$            nz    = nz + 1
!!$            val(nzin_) = a%val(j)
!!$            ia(nzin_)  = (i)
!!$            ja(nzin_)  = (a%ja(j))
!!$          end if
!!$        enddo
!!$      end do
!!$    end if
!!$
!!$  end subroutine scsr_getrow
!!$
!!$end subroutine psb_d_scsr_csgetrow
!!$
!!$subroutine psb_d_scsr_csgetblk(imin,imax,a,b,info,&
!!$     & jmin,jmax,iren,append,rscale,cscale)
!!$  ! Output is always in  COO format 
!!$  use psb_error_mod
!!$  use psb_const_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_csgetblk
!!$  implicit none
!!$
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a
!!$  class(psb_d_coo_sparse_mat), intent(inout) :: b
!!$  integer(psb_ipk_), intent(in)                  :: imin,imax
!!$  integer(psb_ipk_),intent(out)                  :: info
!!$  logical, intent(in), optional        :: append
!!$  integer(psb_ipk_), intent(in), optional        :: iren(:)
!!$  integer(psb_ipk_), intent(in), optional        :: jmin,jmax
!!$  logical, intent(in), optional        :: rscale,cscale
!!$  integer(psb_ipk_) :: err_act, nzin, nzout
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='csget'
!!$  logical :: append_
!!$  logical, parameter :: debug=.false.
!!$
!!$  call psb_erractionsave(err_act)
!!$  info = psb_success_
!!$
!!$  if (present(append)) then 
!!$    append_ = append
!!$  else
!!$    append_ = .false.
!!$  endif
!!$  if (append_) then 
!!$    nzin = a%get_nzeros()
!!$  else
!!$    nzin = 0
!!$  endif
!!$
!!$  call a%csget(imin,imax,nzout,b%ia,b%ja,b%val,info,&
!!$       & jmin=jmin, jmax=jmax, iren=iren, append=append_, &
!!$       & nzin=nzin, rscale=rscale, cscale=cscale)
!!$
!!$  if (info /= psb_success_) goto 9999
!!$
!!$  call b%set_nzeros(nzin+nzout)
!!$  call b%fix(info)
!!$  if (info /= psb_success_) goto 9999
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_csgetblk
!!$
!!$
!!$
!!$subroutine psb_d_scsr_csput_a(nz,ia,ja,val,a,imin,imax,jmin,jmax,info,gtl) 
!!$  use psb_error_mod
!!$  use psb_realloc_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_csput_a
!!$  implicit none 
!!$
!!$  class(psb_d_scsr_sparse_mat), intent(inout) :: a
!!$  real(psb_dpk_), intent(in)      :: val(:)
!!$  integer(psb_ipk_), intent(in)             :: nz, ia(:), ja(:), imin,imax,jmin,jmax
!!$  integer(psb_ipk_), intent(out)            :: info
!!$  integer(psb_ipk_), intent(in), optional   :: gtl(:)
!!$
!!$
!!$  integer(psb_ipk_) :: err_act
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='d_scsr_csput'
!!$  logical, parameter :: debug=.false.
!!$  integer(psb_ipk_) :: nza, i,j,k, nzl, isza
!!$
!!$
!!$  call psb_erractionsave(err_act)
!!$  info = psb_success_
!!$
!!$  if (nz <= 0) then 
!!$    info = psb_err_iarg_neg_
!!$    ierr(1)=1
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$  if (size(ia) < nz) then 
!!$    info = psb_err_input_asize_invalid_i_
!!$    ierr(1)=2
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$
!!$  if (size(ja) < nz) then 
!!$    info = psb_err_input_asize_invalid_i_
!!$    ierr(1)=3
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$  if (size(val) < nz) then 
!!$    info = psb_err_input_asize_invalid_i_
!!$    ierr(1)=4
!!$    call psb_errpush(info,name,i_err=ierr)
!!$    goto 9999
!!$  end if
!!$
!!$  if (nz == 0) return
!!$
!!$  nza  = a%get_nzeros()
!!$
!!$  if (a%is_bld()) then 
!!$    ! Build phase should only ever be in COO
!!$    info = psb_err_invalid_mat_state_
!!$
!!$  else  if (a%is_upd()) then 
!!$    call  psb_d_scsr_srch_upd(nz,ia,ja,val,a,&
!!$         & imin,imax,jmin,jmax,info,gtl)
!!$
!!$    if (info /= psb_success_) then  
!!$
!!$      info = psb_err_invalid_mat_state_
!!$    end if
!!$
!!$  else 
!!$    ! State is wrong.
!!$    info = psb_err_invalid_mat_state_
!!$  end if
!!$  if (info /= psb_success_) then
!!$    call psb_errpush(info,name)
!!$    goto 9999
!!$  end if
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$
!!$contains
!!$
!!$  subroutine psb_d_scsr_srch_upd(nz,ia,ja,val,a,&
!!$       & imin,imax,jmin,jmax,info,gtl)
!!$
!!$    use psb_const_mod
!!$    use psb_realloc_mod
!!$    use psb_string_mod
!!$    use psb_sort_mod
!!$    implicit none 
!!$
!!$    class(psb_d_scsr_sparse_mat), intent(inout) :: a
!!$    integer(psb_ipk_), intent(in) :: nz, imin,imax,jmin,jmax
!!$    integer(psb_ipk_), intent(in) :: ia(:),ja(:)
!!$    real(psb_dpk_), intent(in) :: val(:)
!!$    integer(psb_ipk_), intent(out) :: info
!!$    integer(psb_ipk_), intent(in), optional  :: gtl(:)
!!$    integer(psb_ipk_) :: i,ir,ic, ilr, ilc, ip, &
!!$         & i1,i2,nr,nc,nnz,dupl,ng
!!$    integer(psb_ipk_) :: debug_level, debug_unit
!!$    character(len=20)    :: name='d_scsr_srch_upd'
!!$
!!$    info = psb_success_
!!$    debug_unit  = psb_get_debug_unit()
!!$    debug_level = psb_get_debug_level()
!!$
!!$    dupl = a%get_dupl()
!!$
!!$    if (.not.a%is_sorted()) then 
!!$      info = -4
!!$      return
!!$    end if
!!$
!!$    ilr = -1 
!!$    ilc = -1 
!!$    nnz = a%get_nzeros()
!!$    nr  = a%get_nrows()
!!$    nc  = a%get_ncols()
!!$
!!$    if (present(gtl)) then 
!!$      ng = size(gtl)
!!$
!!$      select case(dupl)
!!$      case(psb_dupl_ovwrt_,psb_dupl_err_)
!!$        ! Overwrite.
!!$        ! Cannot test for error, should have been caught earlier.
!!$
!!$        ilr = -1 
!!$        ilc = -1 
!!$        do i=1, nz
!!$          ir = ia(i)
!!$          ic = ja(i) 
!!$          if ((ir >=1).and.(ir<=ng).and.(ic>=1).and.(ic<=ng)) then 
!!$            ir = gtl(ir)
!!$            ic = gtl(ic)
!!$            if ((ir > 0).and.(ir <= nr)) then 
!!$              i1 = a%irp(ir)
!!$              i2 = a%irp(ir+1)
!!$              nc=i2-i1
!!$
!!$              ip = psb_ibsrch(ic,nc,a%ja(i1:i2-1))    
!!$              if (ip>0) then 
!!$                a%val(i1+ip-1) = val(i)
!!$              else
!!$                if (debug_level >= psb_debug_serial_) &
!!$                     & write(debug_unit,*) trim(name),&
!!$                     & ': Was searching ',ic,' in: ',i1,i2,&
!!$                     & ' : ',a%ja(i1:i2-1)
!!$                info = i
!!$                return
!!$              end if
!!$
!!$            else
!!$
!!$              if (debug_level >= psb_debug_serial_) &
!!$                   & write(debug_unit,*) trim(name),&
!!$                   & ': Discarding row that does not belong to us.'
!!$            end if
!!$          end if
!!$        end do
!!$
!!$      case(psb_dupl_add_)
!!$        ! Add
!!$        ilr = -1 
!!$        ilc = -1 
!!$        do i=1, nz
!!$          ir = ia(i)
!!$          ic = ja(i) 
!!$          if ((ir >=1).and.(ir<=ng).and.(ic>=1).and.(ic<=ng)) then 
!!$            ir = gtl(ir)
!!$            ic = gtl(ic)
!!$            if ((ir > 0).and.(ir <= nr)) then 
!!$              i1 = a%irp(ir)
!!$              i2 = a%irp(ir+1)
!!$              nc = i2-i1
!!$              ip = psb_ibsrch(ic,nc,a%ja(i1:i2-1))
!!$              if (ip>0) then 
!!$                a%val(i1+ip-1) = a%val(i1+ip-1) + val(i)
!!$              else
!!$                if (debug_level >= psb_debug_serial_) &
!!$                     & write(debug_unit,*) trim(name),&
!!$                     & ': Was searching ',ic,' in: ',i1,i2,&
!!$                     & ' : ',a%ja(i1:i2-1)
!!$                info = i
!!$                return
!!$              end if
!!$            else
!!$              if (debug_level >= psb_debug_serial_) &
!!$                   & write(debug_unit,*) trim(name),&
!!$                   & ': Discarding row that does not belong to us.'
!!$            end if
!!$
!!$          end if
!!$        end do
!!$
!!$      case default
!!$        info = -3
!!$        if (debug_level >= psb_debug_serial_) &
!!$             & write(debug_unit,*) trim(name),&
!!$             & ': Duplicate handling: ',dupl
!!$      end select
!!$
!!$    else
!!$
!!$      select case(dupl)
!!$      case(psb_dupl_ovwrt_,psb_dupl_err_)
!!$        ! Overwrite.
!!$        ! Cannot test for error, should have been caught earlier.
!!$
!!$        ilr = -1 
!!$        ilc = -1 
!!$        do i=1, nz
!!$          ir = ia(i)
!!$          ic = ja(i) 
!!$
!!$          if ((ir > 0).and.(ir <= nr)) then 
!!$
!!$            i1 = a%irp(ir)
!!$            i2 = a%irp(ir+1)
!!$            nc=i2-i1
!!$
!!$            ip = psb_ibsrch(ic,nc,a%ja(i1:i2-1))    
!!$            if (ip>0) then 
!!$              a%val(i1+ip-1) = val(i)
!!$            else
!!$              if (debug_level >= psb_debug_serial_) &
!!$                   & write(debug_unit,*) trim(name),&
!!$                   & ': Was searching ',ic,' in: ',i1,i2,&
!!$                   & ' : ',a%ja(i1:i2-1)
!!$              info = i
!!$              return
!!$            end if
!!$
!!$          else
!!$            if (debug_level >= psb_debug_serial_) &
!!$                 & write(debug_unit,*) trim(name),&
!!$                 & ': Discarding row that does not belong to us.'
!!$          end if
!!$
!!$        end do
!!$
!!$      case(psb_dupl_add_)
!!$        ! Add
!!$        ilr = -1 
!!$        ilc = -1 
!!$        do i=1, nz
!!$          ir = ia(i)
!!$          ic = ja(i) 
!!$          if ((ir > 0).and.(ir <= nr)) then 
!!$            i1 = a%irp(ir)
!!$            i2 = a%irp(ir+1)
!!$            nc = i2-i1
!!$            ip = psb_ibsrch(ic,nc,a%ja(i1:i2-1))
!!$            if (ip>0) then 
!!$              a%val(i1+ip-1) = a%val(i1+ip-1) + val(i)
!!$            else
!!$              info = i
!!$              return
!!$            end if
!!$          else
!!$            if (debug_level >= psb_debug_serial_) &
!!$                 & write(debug_unit,*) trim(name),&
!!$                 & ': Discarding row that does not belong to us.'
!!$          end if
!!$        end do
!!$
!!$      case default
!!$        info = -3
!!$        if (debug_level >= psb_debug_serial_) &
!!$             & write(debug_unit,*) trim(name),&
!!$             & ': Duplicate handling: ',dupl
!!$      end select
!!$
!!$    end if
!!$
!!$  end subroutine psb_d_scsr_srch_upd
!!$
!!$end subroutine psb_d_scsr_csput_a
!!$
!!$
!!$subroutine psb_d_scsr_reinit(a,clear)
!!$  use psb_error_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_reinit
!!$  implicit none 
!!$
!!$  class(psb_d_scsr_sparse_mat), intent(inout) :: a   
!!$  logical, intent(in), optional :: clear
!!$
!!$  integer(psb_ipk_) :: err_act, info
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='reinit'
!!$  logical  :: clear_
!!$  logical, parameter :: debug=.false.
!!$
!!$  call psb_erractionsave(err_act)
!!$  info = psb_success_
!!$
!!$
!!$  if (present(clear)) then 
!!$    clear_ = clear
!!$  else
!!$    clear_ = .true.
!!$  end if
!!$
!!$  if (a%is_bld() .or. a%is_upd()) then 
!!$    ! do nothing
!!$    return
!!$  else if (a%is_asb()) then 
!!$    if (clear_) a%val(:) = dzero
!!$    call a%set_upd()
!!$  else
!!$    info = psb_err_invalid_mat_state_
!!$    call psb_errpush(info,name)
!!$    goto 9999
!!$  end if
!!$
!!$  call psb_erractionrestore(err_act)
!!$  return
!!$
!!$9999 call psb_error_handler(err_act)
!!$  return
!!$
!!$end subroutine psb_d_scsr_reinit

subroutine  psb_d_scsr_trim(a)
  use psb_realloc_mod
  use psb_error_mod
  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_trim
  implicit none 
  class(psb_d_scsr_sparse_mat), intent(inout) :: a
  integer(psb_ipk_) :: err_act, info, nz, m 
  integer(psb_ipk_) :: ierr(5)
  character(len=20)  :: name='trim'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  info = psb_success_
  call a%psb_d_csr_sparse_mat%trim() 
  call psb_realloc(a%nnerws,a%nerwids,info)

  if (info /= psb_success_) goto 9999 
  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)
  return

end subroutine psb_d_scsr_trim

!!$subroutine psb_d_scsr_print(iout,a,iv,head,ivr,ivc)
!!$  use psb_string_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_scsr_print
!!$  implicit none 
!!$
!!$  integer(psb_ipk_), intent(in)               :: iout
!!$  class(psb_d_scsr_sparse_mat), intent(in) :: a   
!!$  integer(psb_ipk_), intent(in), optional     :: iv(:)
!!$  character(len=*), optional        :: head
!!$  integer(psb_ipk_), intent(in), optional     :: ivr(:), ivc(:)
!!$
!!$  integer(psb_ipk_) :: err_act
!!$  integer(psb_ipk_) :: ierr(5)
!!$  character(len=20)  :: name='d_scsr_print'
!!$  logical, parameter :: debug=.false.
!!$  character(len=*), parameter  :: datatype='real'
!!$  character(len=80)                 :: frmtv 
!!$  integer(psb_ipk_) :: irs,ics,i,j, nmx, ni, nr, nc, nz
!!$
!!$  if (present(head)) then 
!!$    write(iout,'(a)') '%%MatrixMarket matrix coordinate real general'
!!$    write(iout,'(a,a)') '% ',head 
!!$    write(iout,'(a)') '%'    
!!$    write(iout,'(a,a)') '% COO'
!!$  endif
!!$
!!$  nr = a%get_nrows()
!!$  nc = a%get_ncols()
!!$  nz = a%get_nzeros()
!!$  nmx = max(nr,nc,1)
!!$  ni  = floor(log10(1.0*nmx)) + 1
!!$
!!$  if (datatype=='real') then 
!!$    write(frmtv,'(a,i3.3,a,i3.3,a)') '(2(i',ni,',1x),es26.18,1x,2(i',ni,',1x))'
!!$  else 
!!$    write(frmtv,'(a,i3.3,a,i3.3,a)') '(2(i',ni,',1x),2(es26.18,1x),2(i',ni,',1x))'
!!$  end if
!!$  write(iout,*) nr, nc, nz 
!!$  if(present(iv)) then 
!!$    do i=1, nr
!!$      do j=a%irp(i),a%irp(i+1)-1 
!!$        write(iout,frmtv) iv(i),iv(a%ja(j)),a%val(j)
!!$      end do
!!$    enddo
!!$  else      
!!$    if (present(ivr).and..not.present(ivc)) then 
!!$      do i=1, nr
!!$        do j=a%irp(i),a%irp(i+1)-1 
!!$          write(iout,frmtv) ivr(i),(a%ja(j)),a%val(j)
!!$        end do
!!$      enddo
!!$    else if (present(ivr).and.present(ivc)) then 
!!$      do i=1, nr
!!$        do j=a%irp(i),a%irp(i+1)-1 
!!$          write(iout,frmtv) ivr(i),ivc(a%ja(j)),a%val(j)
!!$        end do
!!$      enddo
!!$    else if (.not.present(ivr).and.present(ivc)) then 
!!$      do i=1, nr
!!$        do j=a%irp(i),a%irp(i+1)-1 
!!$          write(iout,frmtv) (i),ivc(a%ja(j)),a%val(j)
!!$        end do
!!$      enddo
!!$    else if (.not.present(ivr).and..not.present(ivc)) then 
!!$      do i=1, nr
!!$        do j=a%irp(i),a%irp(i+1)-1 
!!$          write(iout,frmtv) (i),(a%ja(j)),a%val(j)
!!$        end do
!!$      enddo
!!$    endif
!!$  endif
!!$
!!$end subroutine psb_d_scsr_print
!!$
!!$
!!$subroutine psb_d_cp_scsr_from_coo(a,b,info) 
!!$  use psb_const_mod
!!$  use psb_realloc_mod
!!$  use psb_d_base_mat_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_cp_scsr_from_coo
!!$  implicit none 
!!$
!!$  class(psb_d_scsr_sparse_mat), intent(inout) :: a
!!$  class(psb_d_coo_sparse_mat), intent(in)    :: b
!!$  integer(psb_ipk_), intent(out)                        :: info
!!$
!!$  type(psb_d_coo_sparse_mat)   :: tmp
!!$  integer(psb_ipk_), allocatable :: itemp(:)
!!$  !locals
!!$  logical             :: rwshr_
!!$  integer(psb_ipk_) :: nza, nr, i,j,irw, err_act, nc
!!$  integer(psb_ipk_), Parameter  :: maxtry=8
!!$  integer(psb_ipk_) :: debug_level, debug_unit
!!$  character(len=20)   :: name
!!$
!!$  info = psb_success_
!!$  ! This is to have fix_coo called behind the scenes
!!$  call tmp%cp_from_coo(b,info)
!!$  if (info == psb_success_) call a%mv_from_coo(tmp,info)
!!$
!!$end subroutine psb_d_cp_scsr_from_coo
!!$
!!$
!!$
!!$subroutine psb_d_cp_scsr_to_coo(a,b,info) 
!!$  use psb_const_mod
!!$  use psb_d_base_mat_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_cp_scsr_to_coo
!!$  implicit none 
!!$
!!$  class(psb_d_scsr_sparse_mat), intent(in)  :: a
!!$  class(psb_d_coo_sparse_mat), intent(inout) :: b
!!$  integer(psb_ipk_), intent(out)                      :: info
!!$
!!$  integer(psb_ipk_), allocatable :: itemp(:)
!!$  !locals
!!$  logical             :: rwshr_
!!$  integer(psb_ipk_) :: nza, nr, nc,i,j,irw, err_act
!!$  integer(psb_ipk_), Parameter  :: maxtry=8
!!$  integer(psb_ipk_) :: debug_level, debug_unit
!!$  character(len=20)   :: name
!!$
!!$  info = psb_success_
!!$
!!$  nr  = a%get_nrows()
!!$  nc  = a%get_ncols()
!!$  nza = a%get_nzeros()
!!$
!!$  call b%allocate(nr,nc,nza)
!!$  b%psb_d_base_sparse_mat = a%psb_d_base_sparse_mat
!!$
!!$  do i=1, nr
!!$    do j=a%irp(i),a%irp(i+1)-1
!!$      b%ia(j)  = i
!!$      b%ja(j)  = a%ja(j)
!!$      b%val(j) = a%val(j)
!!$    end do
!!$  end do
!!$  call b%set_nzeros(a%get_nzeros())
!!$  call b%fix(info)
!!$
!!$
!!$end subroutine psb_d_cp_scsr_to_coo
!!$
!!$
!!$subroutine psb_d_mv_scsr_to_coo(a,b,info) 
!!$  use psb_const_mod
!!$  use psb_realloc_mod
!!$  use psb_d_base_mat_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_mv_scsr_to_coo
!!$  implicit none 
!!$
!!$  class(psb_d_scsr_sparse_mat), intent(inout) :: a
!!$  class(psb_d_coo_sparse_mat), intent(inout)   :: b
!!$  integer(psb_ipk_), intent(out)                        :: info
!!$
!!$  integer(psb_ipk_), allocatable :: itemp(:)
!!$  !locals
!!$  logical             :: rwshr_
!!$  integer(psb_ipk_) :: nza, nr, nc,i,j,irw, err_act
!!$  integer(psb_ipk_), Parameter  :: maxtry=8
!!$  integer(psb_ipk_) :: debug_level, debug_unit
!!$  character(len=20)   :: name
!!$
!!$  info = psb_success_
!!$
!!$  nr  = a%get_nrows()
!!$  nc  = a%get_ncols()
!!$  nza = a%get_nzeros()
!!$
!!$  b%psb_d_base_sparse_mat = a%psb_d_base_sparse_mat
!!$  call b%set_nzeros(a%get_nzeros())
!!$  call move_alloc(a%ja,b%ja)
!!$  call move_alloc(a%val,b%val)
!!$  call psb_realloc(nza,b%ia,info)
!!$  if (info /= psb_success_) return
!!$  do i=1, nr
!!$    do j=a%irp(i),a%irp(i+1)-1
!!$      b%ia(j)  = i
!!$    end do
!!$  end do
!!$  call a%free()
!!$  call b%fix(info)
!!$
!!$
!!$end subroutine psb_d_mv_scsr_to_coo
!!$


subroutine psb_d_mv_scsr_from_coo(a,b,info) 
  use psb_const_mod
  use psb_realloc_mod
  use psb_error_mod
  use psb_d_base_mat_mod
  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_mv_scsr_from_coo
  implicit none 

  class(psb_d_scsr_sparse_mat), intent(inout) :: a
  class(psb_d_coo_sparse_mat), intent(inout) :: b
  integer(psb_ipk_), intent(out)                        :: info

  integer(psb_ipk_), allocatable :: itemp(:)
  !locals
  logical             :: rwshr_
  integer(psb_ipk_) :: nza, nr, i
  integer(psb_ipk_), Parameter  :: maxtry=8
  integer(psb_ipk_) :: debug_level, debug_unit
  character(len=20)   :: name='mv_from_coo'

  info = psb_success_
  debug_unit  = psb_get_debug_unit()
  debug_level = psb_get_debug_level()

  call a%psb_d_csr_sparse_mat%mv_from_coo(b,info)
  if (info /= psb_success_) return
  nr = a%get_nrows()
  call psb_realloc(nr,a%nerwids,info)
  if (info /= psb_success_) return
  associate(nnerws => a%nnerws, irp => a%irp, nerwids => a%nerwids)
    nnerws = 0
    do i=1, nr
      if ((irp(i+1)-irp(i)) > 0) then
        nnerws          = nnerws + 1
        nerwids(nnerws) = i
      end if
    end do
  end associate

end subroutine psb_d_mv_scsr_from_coo


!!$subroutine psb_d_mv_scsr_to_fmt(a,b,info) 
!!$  use psb_const_mod
!!$  use psb_d_base_mat_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_mv_scsr_to_fmt
!!$  implicit none 
!!$
!!$  class(psb_d_scsr_sparse_mat), intent(inout) :: a
!!$  class(psb_d_base_sparse_mat), intent(inout)  :: b
!!$  integer(psb_ipk_), intent(out)                        :: info
!!$
!!$  !locals
!!$  type(psb_d_coo_sparse_mat) :: tmp
!!$  logical             :: rwshr_
!!$  integer(psb_ipk_) :: nza, nr, i,j,irw, err_act, nc
!!$  integer(psb_ipk_), Parameter  :: maxtry=8
!!$  integer(psb_ipk_) :: debug_level, debug_unit
!!$  character(len=20)   :: name
!!$
!!$  info = psb_success_
!!$
!!$  select type (b)
!!$  type is (psb_d_coo_sparse_mat) 
!!$    call a%mv_to_coo(b,info)
!!$    ! Need to fix trivial copies! 
!!$  type is (psb_d_scsr_sparse_mat) 
!!$    b%psb_d_base_sparse_mat = a%psb_d_base_sparse_mat
!!$    call move_alloc(a%irp, b%irp)
!!$    call move_alloc(a%ja,  b%ja)
!!$    call move_alloc(a%val, b%val)
!!$    call a%free()
!!$    
!!$  class default
!!$    call a%mv_to_coo(tmp,info)
!!$    if (info == psb_success_) call b%mv_from_coo(tmp,info)
!!$  end select
!!$
!!$end subroutine psb_d_mv_scsr_to_fmt


!!$subroutine psb_d_cp_scsr_to_fmt(a,b,info) 
!!$  use psb_const_mod
!!$  use psb_d_base_mat_mod
!!$  use psb_realloc_mod
!!$  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_cp_scsr_to_fmt
!!$  implicit none 
!!$
!!$  class(psb_d_scsr_sparse_mat), intent(in)   :: a
!!$  class(psb_d_base_sparse_mat), intent(inout) :: b
!!$  integer(psb_ipk_), intent(out)                       :: info
!!$
!!$  !locals
!!$  type(psb_d_coo_sparse_mat) :: tmp
!!$  logical             :: rwshr_
!!$  integer(psb_ipk_) :: nza, nr, i,j,irw, err_act, nc
!!$  integer(psb_ipk_), Parameter  :: maxtry=8
!!$  integer(psb_ipk_) :: debug_level, debug_unit
!!$  character(len=20)   :: name
!!$
!!$  info = psb_success_
!!$
!!$
!!$  select type (b)
!!$  type is (psb_d_coo_sparse_mat) 
!!$    call a%cp_to_coo(b,info)
!!$
!!$  type is (psb_d_scsr_sparse_mat) 
!!$    b%psb_d_base_sparse_mat = a%psb_d_base_sparse_mat
!!$    if (info == 0) call psb_safe_cpy( a%irp, b%irp , info)
!!$    if (info == 0) call psb_safe_cpy( a%ja , b%ja  , info)
!!$    if (info == 0) call psb_safe_cpy( a%val, b%val , info)
!!$
!!$  class default
!!$    call a%cp_to_coo(tmp,info)
!!$    if (info == psb_success_) call b%mv_from_coo(tmp,info)
!!$  end select
!!$
!!$end subroutine psb_d_cp_scsr_to_fmt


subroutine psb_d_mv_scsr_from_fmt(a,b,info) 
  use psb_const_mod
  use psb_d_base_mat_mod
  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_mv_scsr_from_fmt
  implicit none 

  class(psb_d_scsr_sparse_mat), intent(inout)  :: a
  class(psb_d_base_sparse_mat), intent(inout) :: b
  integer(psb_ipk_), intent(out)                         :: info

  !locals
  type(psb_d_coo_sparse_mat) :: tmp
  logical             :: rwshr_
  integer(psb_ipk_) :: nza, nr, i,j,irw, err_act, nc
  integer(psb_ipk_), Parameter  :: maxtry=8
  integer(psb_ipk_) :: debug_level, debug_unit
  character(len=20)   :: name

  info = psb_success_

  select type (b)
  type is (psb_d_coo_sparse_mat) 
    call a%mv_from_coo(b,info)

  type is (psb_d_scsr_sparse_mat) 
    a%psb_d_base_sparse_mat = b%psb_d_base_sparse_mat
    a%nnerws  = b%nnerws
    call move_alloc(b%irp, a%irp)
    call move_alloc(b%ja,  a%ja)
    call move_alloc(b%val, a%val)
    call move_alloc(b%nerwids, a%nerwids)
    call b%free()

  class is (psb_d_csr_sparse_mat)
    a%psb_d_base_sparse_mat = b%psb_d_base_sparse_mat
    call move_alloc(b%irp, a%irp)
    call move_alloc(b%ja,  a%ja)
    call move_alloc(b%val, a%val)
    nr = a%get_nrows()
    call  psb_realloc(nr,a%nerwids,info)
    associate(nnerws => a%nnerws, irp => a%irp, nerwids => a%nerwids)
      nnerws = 0
      do i=1, nr
        if ((irp(i+1)-irp(i)) > 0) then
          nnerws          = nnerws + 1
          nerwids(nnerws) = i
        end if
      end do
    end associate
    
  class default
    call b%mv_to_coo(tmp,info)
    if (info == psb_success_) call a%mv_from_coo(tmp,info)
  end select

end subroutine psb_d_mv_scsr_from_fmt



subroutine psb_d_cp_scsr_from_fmt(a,b,info) 
  use psb_const_mod
  use psb_d_base_mat_mod
  use psb_realloc_mod
  use psb_d_scsr_mat_mod, psb_protect_name => psb_d_cp_scsr_from_fmt
  implicit none 

  class(psb_d_scsr_sparse_mat), intent(inout) :: a
  class(psb_d_base_sparse_mat), intent(in)   :: b
  integer(psb_ipk_), intent(out)                        :: info

  !locals
  type(psb_d_coo_sparse_mat) :: tmp
  logical             :: rwshr_
  integer(psb_ipk_) :: nz, nr, i,j,irw, err_act, nc
  integer(psb_ipk_), Parameter  :: maxtry=8
  integer(psb_ipk_) :: debug_level, debug_unit
  character(len=20)   :: name

  info = psb_success_

  select type (b)
  type is (psb_d_coo_sparse_mat) 
    call a%cp_from_coo(b,info)

  type is (psb_d_scsr_sparse_mat) 
    a%psb_d_base_sparse_mat = b%psb_d_base_sparse_mat
    a%nnerws  = b%nnerws
    if (info == 0) call psb_safe_cpy( b%irp, a%irp , info)
    if (info == 0) call psb_safe_cpy( b%ja , a%ja  , info)
    if (info == 0) call psb_safe_cpy( b%val, a%val , info)
    if (info == 0) call psb_safe_cpy( b%nerwids, a%nerwids , info)

  class is (psb_d_csr_sparse_mat)
    a%psb_d_base_sparse_mat = b%psb_d_base_sparse_mat
    if (info == 0) call psb_safe_cpy( b%irp, a%irp , info)
    if (info == 0) call psb_safe_cpy( b%ja , a%ja  , info)
    if (info == 0) call psb_safe_cpy( b%val, a%val , info)
    nr = a%get_nrows()
    call  psb_realloc(nr,a%nerwids,info)
    associate(nnerws => a%nnerws, irp => a%irp, nerwids => a%nerwids)
      nnerws = 0
      do i=1, nr
        if ((irp(i+1)-irp(i)) > 0) then
          nnerws          = nnerws + 1
          nerwids(nnerws) = i
        end if
      end do
    end associate
    
  class default
    call b%cp_to_coo(tmp,info)
    if (info == psb_success_) call a%mv_from_coo(tmp,info)
  end select
end subroutine psb_d_cp_scsr_from_fmt