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psblas3/util/psb_blockpart_mod.f90

76 lines
2.5 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.
!
!
!
!
module psb_blockpart_mod
public part_block, bld_partblock
contains
subroutine part_block(global_indx,n,np,pv,nv)
use psb_base_mod, only : psb_ipk_, psb_mpik_
implicit none
integer(psb_ipk_), intent(in) :: global_indx, n
integer(psb_ipk_), intent(in) :: np
integer(psb_ipk_), intent(out) :: nv
integer(psb_ipk_), intent(out) :: pv(*)
integer(psb_ipk_) :: dim_block
dim_block = (n + np - 1)/np
nv = 1
pv(nv) = (global_indx - 1) / dim_block
return
end subroutine part_block
subroutine bld_partblock(n,np,ivg)
use psb_base_mod, only : psb_ipk_
integer(psb_ipk_) :: n,np,ivg(*)
integer(psb_ipk_) :: dim_block,i
dim_block = (n + np - 1)/np
do i=1,n
ivg(i) = (i - 1) / dim_block
enddo
end subroutine bld_partblock
end module psb_blockpart_mod