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psblas3/ext/impl/psb_z_dia_aclsum.f90

88 lines
2.9 KiB
Fortran

! Parallel Sparse BLAS GPU plugin
! (C) Copyright 2013
!
! Salvatore Filippone
! Alessandro Fanfarillo
!
! 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.
!
subroutine psb_z_dia_aclsum(d,a)
use psb_base_mod
use psb_z_dia_mat_mod, psb_protect_name => psb_z_dia_aclsum
implicit none
class(psb_z_dia_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(out) :: d(:)
integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc, nc, ir1,ir2, nr
logical :: tra
integer(psb_ipk_) :: err_act, info, int_err(5)
character(len=20) :: name='aclsum'
logical, parameter :: debug=.false.
call psb_erractionsave(err_act)
if (a%is_dev()) call a%sync()
m = a%get_nrows()
n = a%get_ncols()
if (size(d) < n) then
info=psb_err_input_asize_small_i_
int_err(1) = 1
int_err(2) = size(d)
int_err(3) = n
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
if (a%is_unit()) then
d = done
else
d = dzero
end if
nr = size(a%data,1)
nc = size(a%data,2)
do j=1,nc
jc = a%offset(j)
if (jc > 0) then
ir1 = 1
ir2 = nr - jc
else
ir1 = 1 - jc
ir2 = nr
end if
do i=ir1, ir2
d(i+jc) = d(i+jc) + abs(a%data(i,j))
enddo
enddo
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine psb_z_dia_aclsum