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81 lines
3.1 KiB
Fortran
81 lines
3.1 KiB
Fortran
1 year ago
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! Parallel Sparse BLAS GPU plugin
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! (C) Copyright 2013
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!
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! Salvatore Filippone
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! Alessandro Fanfarillo
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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subroutine psi_d_xtr_coo_from_dia(nr,nc,ia,ja,val,nz,nrd,ncd,data,offsets,info,rdisp)
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use psb_base_mod, only : psb_ipk_, psb_success_, psb_dpk_, dzero
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implicit none
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integer(psb_ipk_), intent(in) :: nr,nc, nrd,ncd, offsets(:)
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integer(psb_ipk_), intent(inout) :: ia(:), ja(:),nz
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real(psb_dpk_), intent(inout) :: val(:)
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real(psb_dpk_), intent(in) :: data(nrd,ncd)
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_), intent(in), optional :: rdisp
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!locals
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integer(psb_ipk_) :: rdisp_, nrcmdisp, rdisp1
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integer(psb_ipk_) :: i,j,ir1, ir2, ir, ic,k
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logical, parameter :: debug=.false.
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info = psb_success_
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rdisp_ = 0
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if (present(rdisp)) rdisp_ = rdisp
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if (debug) write(0,*) 'Start xtr_coo_from_dia',nr,nc,nrd,ncd, rdisp_
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nrcmdisp = min(nr-rdisp_,nc-rdisp_)
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rdisp1 = 1-rdisp_
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nz = 0
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do j=1, ncd
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if (offsets(j)>=0) then
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ir1 = 1
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! ir2 = min(nrd,nr - offsets(j) - rdisp_,nc-offsets(j)-rdisp_)
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ir2 = min(nrd, nrcmdisp - offsets(j))
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else
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! ir1 = max(1,1-offsets(j)-rdisp_)
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ir1 = max(1, rdisp1 - offsets(j))
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ir2 = min(nrd, nrcmdisp)
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end if
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if (debug) write(0,*) ' Loop J',j,ir1,ir2, offsets(j)
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do i=ir1,ir2
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ir = i + rdisp_
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ic = i + rdisp_ + offsets(j)
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if (debug) write(0,*) ' Loop I',i,ir,ic
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nz = nz + 1
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ia(nz) = ir
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ja(nz) = ic
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val(nz) = data(i,j)
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enddo
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end do
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end subroutine psi_d_xtr_coo_from_dia
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