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psblas3/ext/impl/psb_d_dia_allocate_mnnz.f90

89 lines
3.2 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_d_dia_allocate_mnnz(m,n,a,nz)
use psb_base_mod
use psb_d_dia_mat_mod, psb_protect_name => psb_d_dia_allocate_mnnz
implicit none
integer(psb_ipk_), intent(in) :: m,n
class(psb_d_dia_sparse_mat), intent(inout) :: a
integer(psb_ipk_), intent(in), optional :: nz
Integer(Psb_ipk_) :: err_act, info, nz_
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_
call psb_errpush(info,name,i_err=(/ione/))
goto 9999
endif
if (n < 0) then
info = psb_err_iarg_neg_
call psb_errpush(info,name,i_err=(/2*ione/))
goto 9999
endif
if (present(nz)) then
nz_ = (max(nz,ione) + m -ione )/m
else
nz_ = ((max(7*m,7*n,ione)+m-ione)/m)
end if
if (nz_ < 0) then
info = psb_err_iarg_neg_
call psb_errpush(info,name,i_err=(/3*ione/))
goto 9999
endif
if (info == psb_success_) call psb_realloc(m,nz_,a%data,info)
if (info == psb_success_) call psb_realloc(m+n,a%offset,info)
if (info == psb_success_) then
a%data = 0
a%offset = 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
if (info /= psb_success_) goto 9999
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine psb_d_dia_allocate_mnnz