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psblas3/base/modules/serial/psb_d_csc_mat_mod.f90

613 lines
22 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.
!
!
!
! package: psb_d_csc_mat_mod
!
! This module contains the definition of the psb_d_csc_sparse_mat type
! which implements an actual storage format (the CSC in this case) for
! a sparse matrix as well as the related methods (those who are
! specific to the type and could not be defined higher in the
! hierarchy). We are at the bottom level of the inheritance chain.
!
! Please refere to psb_d_base_mat_mod for a detailed description
! of the various methods, and to psb_d_csc_impl for implementation details.
!
module psb_d_csc_mat_mod
use psb_d_base_mat_mod
!> \namespace psb_base_mod \class psb_d_csc_sparse_mat
!! \extends psb_d_base_mat_mod::psb_d_base_sparse_mat
!!
!! psb_d_csc_sparse_mat type and the related methods.
!!
type, extends(psb_d_base_sparse_mat) :: psb_d_csc_sparse_mat
!> Pointers to beginning of cols in IA and VAL.
integer(psb_ipk_), allocatable :: icp(:)
!> Row indices.
integer(psb_ipk_), allocatable :: ia(:)
!> Coefficient values.
real(psb_dpk_), allocatable :: val(:)
contains
procedure, pass(a) :: is_by_cols => d_csc_is_by_cols
procedure, pass(a) :: get_size => d_csc_get_size
procedure, pass(a) :: get_nzeros => d_csc_get_nzeros
procedure, nopass :: get_fmt => d_csc_get_fmt
procedure, pass(a) :: sizeof => d_csc_sizeof
procedure, pass(a) :: csmm => psb_d_csc_csmm
procedure, pass(a) :: csmv => psb_d_csc_csmv
procedure, pass(a) :: inner_cssm => psb_d_csc_cssm
procedure, pass(a) :: inner_cssv => psb_d_csc_cssv
procedure, pass(a) :: scals => psb_d_csc_scals
procedure, pass(a) :: scalv => psb_d_csc_scal
procedure, pass(a) :: maxval => psb_d_csc_maxval
procedure, pass(a) :: spnm1 => psb_d_csc_csnm1
procedure, pass(a) :: rowsum => psb_d_csc_rowsum
procedure, pass(a) :: arwsum => psb_d_csc_arwsum
procedure, pass(a) :: colsum => psb_d_csc_colsum
procedure, pass(a) :: aclsum => psb_d_csc_aclsum
procedure, pass(a) :: reallocate_nz => psb_d_csc_reallocate_nz
procedure, pass(a) :: allocate_mnnz => psb_d_csc_allocate_mnnz
procedure, pass(a) :: cp_to_coo => psb_d_cp_csc_to_coo
procedure, pass(a) :: cp_from_coo => psb_d_cp_csc_from_coo
procedure, pass(a) :: cp_to_fmt => psb_d_cp_csc_to_fmt
procedure, pass(a) :: cp_from_fmt => psb_d_cp_csc_from_fmt
procedure, pass(a) :: mv_to_coo => psb_d_mv_csc_to_coo
procedure, pass(a) :: mv_from_coo => psb_d_mv_csc_from_coo
procedure, pass(a) :: mv_to_fmt => psb_d_mv_csc_to_fmt
procedure, pass(a) :: mv_from_fmt => psb_d_mv_csc_from_fmt
procedure, pass(a) :: csput_a => psb_d_csc_csput_a
procedure, pass(a) :: get_diag => psb_d_csc_get_diag
procedure, pass(a) :: csgetptn => psb_d_csc_csgetptn
procedure, pass(a) :: csgetrow => psb_d_csc_csgetrow
procedure, pass(a) :: get_nz_col => d_csc_get_nz_col
procedure, pass(a) :: reinit => psb_d_csc_reinit
procedure, pass(a) :: trim => psb_d_csc_trim
procedure, pass(a) :: print => psb_d_csc_print
procedure, pass(a) :: free => d_csc_free
procedure, pass(a) :: mold => psb_d_csc_mold
end type psb_d_csc_sparse_mat
private :: d_csc_get_nzeros, d_csc_free, d_csc_get_fmt, &
& d_csc_get_size, d_csc_sizeof, d_csc_get_nz_col
!> \memberof psb_d_csc_sparse_mat
!| \see psb_base_mat_mod::psb_base_reallocate_nz
interface
subroutine psb_d_csc_reallocate_nz(nz,a)
import :: psb_ipk_, psb_d_csc_sparse_mat
integer(psb_ipk_), intent(in) :: nz
class(psb_d_csc_sparse_mat), intent(inout) :: a
end subroutine psb_d_csc_reallocate_nz
end interface
!> \memberof psb_d_csc_sparse_mat
!| \see psb_base_mat_mod::psb_base_reinit
interface
subroutine psb_d_csc_reinit(a,clear)
import :: psb_ipk_, psb_d_csc_sparse_mat
class(psb_d_csc_sparse_mat), intent(inout) :: a
logical, intent(in), optional :: clear
end subroutine psb_d_csc_reinit
end interface
!> \memberof psb_d_csc_sparse_mat
!| \see psb_base_mat_mod::psb_base_trim
interface
subroutine psb_d_csc_trim(a)
import :: psb_ipk_, psb_d_csc_sparse_mat
class(psb_d_csc_sparse_mat), intent(inout) :: a
end subroutine psb_d_csc_trim
end interface
!> \memberof psb_d_csc_sparse_mat
!| \see psb_base_mat_mod::psb_base_mold
interface
subroutine psb_d_csc_mold(a,b,info)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_d_base_sparse_mat, psb_long_int_k_
class(psb_d_csc_sparse_mat), intent(in) :: a
class(psb_d_base_sparse_mat), intent(inout), allocatable :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_csc_mold
end interface
!> \memberof psb_d_csc_sparse_mat
!| \see psb_base_mat_mod::psb_base_allocate_mnnz
interface
subroutine psb_d_csc_allocate_mnnz(m,n,a,nz)
import :: psb_ipk_, psb_d_csc_sparse_mat
integer(psb_ipk_), intent(in) :: m,n
class(psb_d_csc_sparse_mat), intent(inout) :: a
integer(psb_ipk_), intent(in), optional :: nz
end subroutine psb_d_csc_allocate_mnnz
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_print
interface
subroutine psb_d_csc_print(iout,a,iv,head,ivr,ivc)
import :: psb_ipk_, psb_d_csc_sparse_mat
integer(psb_ipk_), intent(in) :: iout
class(psb_d_csc_sparse_mat), intent(in) :: a
integer(psb_ipk_), intent(in), optional :: iv(:)
character(len=*), optional :: head
integer(psb_ipk_), intent(in), optional :: ivr(:), ivc(:)
end subroutine psb_d_csc_print
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_cp_to_coo
interface
subroutine psb_d_cp_csc_to_coo(a,b,info)
import :: psb_ipk_, psb_d_coo_sparse_mat, psb_d_csc_sparse_mat
class(psb_d_csc_sparse_mat), intent(in) :: a
class(psb_d_coo_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_cp_csc_to_coo
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_cp_from_coo
interface
subroutine psb_d_cp_csc_from_coo(a,b,info)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_d_coo_sparse_mat
class(psb_d_csc_sparse_mat), intent(inout) :: a
class(psb_d_coo_sparse_mat), intent(in) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_cp_csc_from_coo
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_cp_to_fmt
interface
subroutine psb_d_cp_csc_to_fmt(a,b,info)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_d_base_sparse_mat
class(psb_d_csc_sparse_mat), intent(in) :: a
class(psb_d_base_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_cp_csc_to_fmt
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_cp_from_fmt
interface
subroutine psb_d_cp_csc_from_fmt(a,b,info)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_d_base_sparse_mat
class(psb_d_csc_sparse_mat), intent(inout) :: a
class(psb_d_base_sparse_mat), intent(in) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_cp_csc_from_fmt
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_mv_to_coo
interface
subroutine psb_d_mv_csc_to_coo(a,b,info)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_d_coo_sparse_mat
class(psb_d_csc_sparse_mat), intent(inout) :: a
class(psb_d_coo_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_mv_csc_to_coo
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_mv_from_coo
interface
subroutine psb_d_mv_csc_from_coo(a,b,info)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_d_coo_sparse_mat
class(psb_d_csc_sparse_mat), intent(inout) :: a
class(psb_d_coo_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_mv_csc_from_coo
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_mv_to_fmt
interface
subroutine psb_d_mv_csc_to_fmt(a,b,info)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_d_base_sparse_mat
class(psb_d_csc_sparse_mat), intent(inout) :: a
class(psb_d_base_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_mv_csc_to_fmt
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_mv_from_fmt
interface
subroutine psb_d_mv_csc_from_fmt(a,b,info)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_d_base_sparse_mat
class(psb_d_csc_sparse_mat), intent(inout) :: a
class(psb_d_base_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_mv_csc_from_fmt
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_cp_from
interface
subroutine psb_d_csc_cp_from(a,b)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(inout) :: a
type(psb_d_csc_sparse_mat), intent(in) :: b
end subroutine psb_d_csc_cp_from
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_mv_from
interface
subroutine psb_d_csc_mv_from(a,b)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(inout) :: a
type(psb_d_csc_sparse_mat), intent(inout) :: b
end subroutine psb_d_csc_mv_from
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_csput_a
interface
subroutine psb_d_csc_csput_a(nz,ia,ja,val,a,imin,imax,jmin,jmax,info,gtl)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(inout) :: a
real(psb_dpk_), intent(in) :: val(:)
integer(psb_ipk_), intent(in) :: nz,ia(:), ja(:),&
& imin,imax,jmin,jmax
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: gtl(:)
end subroutine psb_d_csc_csput_a
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_base_mat_mod::psb_base_csgetptn
interface
subroutine psb_d_csc_csgetptn(imin,imax,a,nz,ia,ja,info,&
& jmin,jmax,iren,append,nzin,rscale,cscale)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
integer(psb_ipk_), intent(in) :: imin,imax
integer(psb_ipk_), intent(out) :: nz
integer(psb_ipk_), allocatable, intent(inout) :: ia(:), ja(:)
integer(psb_ipk_),intent(out) :: info
logical, intent(in), optional :: append
integer(psb_ipk_), intent(in), optional :: iren(:)
integer(psb_ipk_), intent(in), optional :: jmin,jmax, nzin
logical, intent(in), optional :: rscale,cscale
end subroutine psb_d_csc_csgetptn
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_csgetrow
interface
subroutine psb_d_csc_csgetrow(imin,imax,a,nz,ia,ja,val,info,&
& jmin,jmax,iren,append,nzin,rscale,cscale)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
integer(psb_ipk_), intent(in) :: imin,imax
integer(psb_ipk_), intent(out) :: nz
integer(psb_ipk_), allocatable, intent(inout) :: ia(:), ja(:)
real(psb_dpk_), allocatable, intent(inout) :: val(:)
integer(psb_ipk_),intent(out) :: info
logical, intent(in), optional :: append
integer(psb_ipk_), intent(in), optional :: iren(:)
integer(psb_ipk_), intent(in), optional :: jmin,jmax, nzin
logical, intent(in), optional :: rscale,cscale
end subroutine psb_d_csc_csgetrow
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_csgetblk
interface
subroutine psb_d_csc_csgetblk(imin,imax,a,b,info,&
& jmin,jmax,iren,append,rscale,cscale)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_, psb_d_coo_sparse_mat
class(psb_d_csc_sparse_mat), intent(in) :: a
class(psb_d_coo_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(in) :: imin,imax
integer(psb_ipk_),intent(out) :: info
logical, intent(in), optional :: append
integer(psb_ipk_), intent(in), optional :: iren(:)
integer(psb_ipk_), intent(in), optional :: jmin,jmax
logical, intent(in), optional :: rscale,cscale
end subroutine psb_d_csc_csgetblk
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_cssv
interface
subroutine psb_d_csc_cssv(alpha,a,x,beta,y,info,trans)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(in) :: alpha, beta, x(:)
real(psb_dpk_), intent(inout) :: y(:)
integer(psb_ipk_), intent(out) :: info
character, optional, intent(in) :: trans
end subroutine psb_d_csc_cssv
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_cssm
interface
subroutine psb_d_csc_cssm(alpha,a,x,beta,y,info,trans)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(in) :: alpha, beta, x(:,:)
real(psb_dpk_), intent(inout) :: y(:,:)
integer(psb_ipk_), intent(out) :: info
character, optional, intent(in) :: trans
end subroutine psb_d_csc_cssm
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_csmv
interface
subroutine psb_d_csc_csmv(alpha,a,x,beta,y,info,trans)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(in) :: alpha, beta, x(:)
real(psb_dpk_), intent(inout) :: y(:)
integer(psb_ipk_), intent(out) :: info
character, optional, intent(in) :: trans
end subroutine psb_d_csc_csmv
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_csmm
interface
subroutine psb_d_csc_csmm(alpha,a,x,beta,y,info,trans)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(in) :: alpha, beta, x(:,:)
real(psb_dpk_), intent(inout) :: y(:,:)
integer(psb_ipk_), intent(out) :: info
character, optional, intent(in) :: trans
end subroutine psb_d_csc_csmm
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_maxval
interface
function psb_d_csc_maxval(a) result(res)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_) :: res
end function psb_d_csc_maxval
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_csnm1
interface
function psb_d_csc_csnm1(a) result(res)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_) :: res
end function psb_d_csc_csnm1
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_rowsum
interface
subroutine psb_d_csc_rowsum(d,a)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(out) :: d(:)
end subroutine psb_d_csc_rowsum
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_arwsum
interface
subroutine psb_d_csc_arwsum(d,a)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(out) :: d(:)
end subroutine psb_d_csc_arwsum
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_colsum
interface
subroutine psb_d_csc_colsum(d,a)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(out) :: d(:)
end subroutine psb_d_csc_colsum
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_aclsum
interface
subroutine psb_d_csc_aclsum(d,a)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(out) :: d(:)
end subroutine psb_d_csc_aclsum
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_get_diag
interface
subroutine psb_d_csc_get_diag(a,d,info)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(out) :: d(:)
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_csc_get_diag
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_scal
interface
subroutine psb_d_csc_scal(d,a,info,side)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(inout) :: a
real(psb_dpk_), intent(in) :: d(:)
integer(psb_ipk_), intent(out) :: info
character, intent(in), optional :: side
end subroutine psb_d_csc_scal
end interface
!> \memberof psb_d_csc_sparse_mat
!! \see psb_d_base_mat_mod::psb_d_base_scals
interface
subroutine psb_d_csc_scals(d,a,info)
import :: psb_ipk_, psb_d_csc_sparse_mat, psb_dpk_
class(psb_d_csc_sparse_mat), intent(inout) :: a
real(psb_dpk_), intent(in) :: d
integer(psb_ipk_), intent(out) :: info
end subroutine psb_d_csc_scals
end interface
contains
! == ===================================
!
!
!
! Getters
!
!
!
!
!
! == ===================================
function d_csc_is_by_cols(a) result(res)
implicit none
class(psb_d_csc_sparse_mat), intent(in) :: a
logical :: res
res = .true.
end function d_csc_is_by_cols
function d_csc_sizeof(a) result(res)
implicit none
class(psb_d_csc_sparse_mat), intent(in) :: a
integer(psb_long_int_k_) :: res
res = 8
res = res + psb_sizeof_dp * psb_size(a%val)
res = res + psb_sizeof_int * psb_size(a%icp)
res = res + psb_sizeof_int * psb_size(a%ia)
end function d_csc_sizeof
function d_csc_get_fmt() result(res)
implicit none
character(len=5) :: res
res = 'CSC'
end function d_csc_get_fmt
function d_csc_get_nzeros(a) result(res)
implicit none
class(psb_d_csc_sparse_mat), intent(in) :: a
integer(psb_ipk_) :: res
res = a%icp(a%get_ncols()+1)-1
end function d_csc_get_nzeros
function d_csc_get_size(a) result(res)
implicit none
class(psb_d_csc_sparse_mat), intent(in) :: a
integer(psb_ipk_) :: res
res = -1
if (allocated(a%ia)) then
res = size(a%ia)
end if
if (allocated(a%val)) then
if (res >= 0) then
res = min(res,size(a%val))
else
res = size(a%val)
end if
end if
end function d_csc_get_size
function d_csc_get_nz_col(idx,a) result(res)
use psb_const_mod
implicit none
class(psb_d_csc_sparse_mat), intent(in) :: a
integer(psb_ipk_), intent(in) :: idx
integer(psb_ipk_) :: res
res = 0
if ((1<=idx).and.(idx<=a%get_ncols())) then
res = a%icp(idx+1)-a%icp(idx)
end if
end function d_csc_get_nz_col
! == ===================================
!
!
!
! Data management
!
!
!
!
!
! == ===================================
subroutine d_csc_free(a)
implicit none
class(psb_d_csc_sparse_mat), intent(inout) :: a
if (allocated(a%icp)) deallocate(a%icp)
if (allocated(a%ia)) deallocate(a%ia)
if (allocated(a%val)) deallocate(a%val)
call a%set_null()
call a%set_nrows(izero)
call a%set_ncols(izero)
return
end subroutine d_csc_free
end module psb_d_csc_mat_mod