GET_LOC_NODE_NUM.f90

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!    Copyright (C) 2012 The SPEED FOUNDATION
!    Author: Ilario Mazzieri
!
!    This file is part of SPEED.
!
!    SPEED is free software; you can redistribute it and/or modify it
!    under the terms of the GNU Affero General Public License as
!    published by the Free Software Foundation, either version 3 of the
!    License, or (at your option) any later version.
!
!    SPEED is distributed in the hope that it will be useful, but
!    WITHOUT ANY WARRANTY; without even the implied warranty of
!    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
!    Affero General Public License for more details.
!
!    You should have received a copy of the GNU Affero General Public License
!    along with SPEED.  If not, see <http://www.gnu.org/licenses/>.
 
 
 
      subroutine get_loc_node_num(nnz_loc, cs_loc, nn_loc, id)
 
      use qsort_c_module
      
      implicit none
 
      integer*4 :: nnz_loc
      integer*4 :: ie, ne, i, j, ind_nd, id
 
      integer*4, intent(out) :: nn_loc
 
      integer*4, dimension(0:nnz_loc), intent(in) :: cs_loc
      integer*4, dimension(0:nnz_loc) :: cs_loc_copy
 
            
      cs_loc_copy = cs_loc
      ne = cs_loc_copy(0) - 1
           
      
      do ie = 1,ne
         cs_loc_copy(cs_loc_copy(ie-1)) = 0       
      enddo
 
      !QUICKSORT FOR REORDING
      !------------------------------------------------------------
      nn_loc = 0
      do ie = 0, cs_loc_copy(0)
         cs_loc_copy(ie) = 0
      enddo         
      
      call qsortc(cs_loc_copy)
      
      
      do i = 1, nnz_loc
         if (cs_loc_copy(i) .ne. 0) then
               if(cs_loc_copy(i) .ne. cs_loc_copy(i-1)) then
                  nn_loc = nn_loc + 1
               endif                
         endif           
      enddo
            
      !-------------------------------------------------------------
  
      !-------------------------------------------------------------- 
!      do i = cs_loc_copy(0) + 1, nnz_loc
!         ind_nd = cs_loc_copy(i)
!      
!         do j = i + 1, nnz_loc
!            if (ind_nd .eq. cs_loc_copy(j)) cs_loc_copy(j) = 0          
!         enddo
!      enddo
!      
!      do ie = 0, cs_loc_copy(0)
!         cs_loc_copy(ie) = 0
!      enddo         
!      
!      
!      nn_loc = 0
!      do i = 0, nnz_loc - 1
!         if(cs_loc_copy(i) .ne. 0) nn_loc = nn_loc + 1
!      enddo   
      !-------------------------------------------------------------
      
            
      end subroutine get_loc_node_num