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psblas3/base/psblas/psb_ddiv_vect.f90

180 lines
5.2 KiB
Fortran

!
! 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.
!
!
! File: psb_ddiv_vect
subroutine psb_ddiv_vect(x,y,desc_a,info)
use psb_base_mod, psb_protect_name => psb_ddiv_vect
implicit none
type(psb_d_vect_type), intent (inout) :: x
type(psb_d_vect_type), intent (inout) :: y
type(psb_desc_type), intent (in) :: desc_a
integer(psb_ipk_), intent(out) :: info
! locals
integer(psb_ipk_) :: ictxt, np, me,&
& err_act, iix, jjx, iiy, jjy
integer(psb_lpk_) :: ix, ijx, iy, ijy, m
character(len=20) :: name, ch_err
name='psb_d_div_vect'
if (psb_errstatus_fatal()) return
info=psb_success_
call psb_erractionsave(err_act)
ictxt=desc_a%get_context()
call psb_info(ictxt, me, np)
if (np == -ione) then
info = psb_err_context_error_
call psb_errpush(info,name)
goto 9999
endif
if (.not.allocated(x%v)) then
info = psb_err_invalid_vect_state_
call psb_errpush(info,name)
goto 9999
endif
if (.not.allocated(y%v)) then
info = psb_err_invalid_vect_state_
call psb_errpush(info,name)
goto 9999
endif
ix = ione
iy = ione
m = desc_a%get_global_rows()
! check vector correctness
call psb_chkvect(m,lone,x%get_nrows(),ix,lone,desc_a,info,iix,jjx)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_chkvect 1'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
call psb_chkvect(m,lone,y%get_nrows(),iy,lone,desc_a,info,iiy,jjy)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_chkvect 2'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
if(desc_a%get_local_rows() > 0) then
call x%div(y,info)
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(ictxt,err_act)
return
end subroutine psb_ddiv_vect
subroutine psb_ddiv_vect_check(x,y,desc_a,info,flag)
use psb_base_mod, psb_protect_name => psb_ddiv_vect_check
implicit none
type(psb_d_vect_type), intent (inout) :: x
type(psb_d_vect_type), intent (inout) :: y
type(psb_desc_type), intent (in) :: desc_a
integer(psb_ipk_), intent(out) :: info
logical, intent(in) :: flag
! locals
integer(psb_ipk_) :: ictxt, np, me,&
& err_act, iix, jjx, iiy, jjy
integer(psb_lpk_) :: ix, ijx, iy, ijy, m
character(len=20) :: name, ch_err
name='psb_d_div_vect_check'
if (psb_errstatus_fatal()) return
info=psb_success_
call psb_erractionsave(err_act)
ictxt=desc_a%get_context()
call psb_info(ictxt, me, np)
if (np == -ione) then
info = psb_err_context_error_
call psb_errpush(info,name)
goto 9999
endif
if (.not.allocated(x%v)) then
info = psb_err_invalid_vect_state_
call psb_errpush(info,name)
goto 9999
endif
if (.not.allocated(y%v)) then
info = psb_err_invalid_vect_state_
call psb_errpush(info,name)
goto 9999
endif
ix = ione
iy = ione
m = desc_a%get_global_rows()
! check vector correctness
call psb_chkvect(m,lone,x%get_nrows(),ix,lone,desc_a,info,iix,jjx)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_chkvect 1'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
call psb_chkvect(m,lone,y%get_nrows(),iy,lone,desc_a,info,iiy,jjy)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_chkvect 2'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
if(desc_a%get_local_rows() > 0) then
call x%div(y,info,flag)
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(ictxt,err_act)
return
end subroutine psb_ddiv_vect_check