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psblas3/base/modules/serial/psb_z_csr_mat_mod.f90

1298 lines
45 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_z_csr_mat_mod
!
! This module contains the definition of the psb_z_csr_sparse_mat type
! which implements an actual storage format (the CSR 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_z_base_mat_mod for a detailed description
! of the various methods, and to psb_z_csr_impl for implementation details.
!
module psb_z_csr_mat_mod
use psb_z_base_mat_mod
!> \namespace psb_base_mod \class psb_z_csr_sparse_mat
!! \extends psb_z_base_mat_mod::psb_z_base_sparse_mat
!!
!! psb_z_csr_sparse_mat type and the related methods.
!! This is a very common storage type, and is the default for assembled
!! matrices in our library
type, extends(psb_z_base_sparse_mat) :: psb_z_csr_sparse_mat
!> Pointers to beginning of rows in JA and VAL.
integer(psb_ipk_), allocatable :: irp(:)
!> Column indices.
integer(psb_ipk_), allocatable :: ja(:)
!> Coefficient values.
complex(psb_dpk_), allocatable :: val(:)
contains
procedure, pass(a) :: is_by_rows => z_csr_is_by_rows
procedure, pass(a) :: get_size => z_csr_get_size
procedure, pass(a) :: get_nzeros => z_csr_get_nzeros
procedure, nopass :: get_fmt => z_csr_get_fmt
procedure, pass(a) :: sizeof => z_csr_sizeof
procedure, pass(a) :: csmm => psb_z_csr_csmm
procedure, pass(a) :: csmv => psb_z_csr_csmv
procedure, pass(a) :: inner_cssm => psb_z_csr_cssm
procedure, pass(a) :: inner_cssv => psb_z_csr_cssv
procedure, pass(a) :: scals => psb_z_csr_scals
procedure, pass(a) :: scalv => psb_z_csr_scal
procedure, pass(a) :: maxval => psb_z_csr_maxval
procedure, pass(a) :: spnmi => psb_z_csr_csnmi
procedure, pass(a) :: rowsum => psb_z_csr_rowsum
procedure, pass(a) :: arwsum => psb_z_csr_arwsum
procedure, pass(a) :: colsum => psb_z_csr_colsum
procedure, pass(a) :: aclsum => psb_z_csr_aclsum
procedure, pass(a) :: reallocate_nz => psb_z_csr_reallocate_nz
procedure, pass(a) :: allocate_mnnz => psb_z_csr_allocate_mnnz
procedure, pass(a) :: tril => psb_z_csr_tril
procedure, pass(a) :: triu => psb_z_csr_triu
procedure, pass(a) :: cp_to_coo => psb_z_cp_csr_to_coo
procedure, pass(a) :: cp_from_coo => psb_z_cp_csr_from_coo
procedure, pass(a) :: cp_to_fmt => psb_z_cp_csr_to_fmt
procedure, pass(a) :: cp_from_fmt => psb_z_cp_csr_from_fmt
procedure, pass(a) :: mv_to_coo => psb_z_mv_csr_to_coo
procedure, pass(a) :: mv_from_coo => psb_z_mv_csr_from_coo
procedure, pass(a) :: mv_to_fmt => psb_z_mv_csr_to_fmt
procedure, pass(a) :: mv_from_fmt => psb_z_mv_csr_from_fmt
procedure, pass(a) :: clean_zeros => psb_z_csr_clean_zeros
procedure, pass(a) :: csput_a => psb_z_csr_csput_a
procedure, pass(a) :: get_diag => psb_z_csr_get_diag
procedure, pass(a) :: csgetptn => psb_z_csr_csgetptn
procedure, pass(a) :: csgetrow => psb_z_csr_csgetrow
procedure, pass(a) :: get_nz_row => z_csr_get_nz_row
procedure, pass(a) :: reinit => psb_z_csr_reinit
procedure, pass(a) :: trim => psb_z_csr_trim
procedure, pass(a) :: print => psb_z_csr_print
procedure, pass(a) :: free => z_csr_free
procedure, pass(a) :: mold => psb_z_csr_mold
end type psb_z_csr_sparse_mat
private :: z_csr_get_nzeros, z_csr_free, z_csr_get_fmt, &
& z_csr_get_size, z_csr_sizeof, z_csr_get_nz_row, &
& z_csr_is_by_rows
!> \memberof psb_z_csr_sparse_mat
!| \see psb_base_mat_mod::psb_base_reallocate_nz
interface
subroutine psb_z_csr_reallocate_nz(nz,a)
import
integer(psb_ipk_), intent(in) :: nz
class(psb_z_csr_sparse_mat), intent(inout) :: a
end subroutine psb_z_csr_reallocate_nz
end interface
!> \memberof psb_z_csr_sparse_mat
!| \see psb_base_mat_mod::psb_base_reinit
interface
subroutine psb_z_csr_reinit(a,clear)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
logical, intent(in), optional :: clear
end subroutine psb_z_csr_reinit
end interface
!> \memberof psb_z_csr_sparse_mat
!| \see psb_base_mat_mod::psb_base_trim
interface
subroutine psb_z_csr_trim(a)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
end subroutine psb_z_csr_trim
end interface
!> \memberof psb_z_csr_sparse_mat
!| \see psb_base_mat_mod::psb_base_mold
interface
subroutine psb_z_csr_mold(a,b,info)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
class(psb_z_base_sparse_mat), intent(inout), allocatable :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_csr_mold
end interface
!> \memberof psb_z_csr_sparse_mat
!| \see psb_base_mat_mod::psb_base_allocate_mnnz
interface
subroutine psb_z_csr_allocate_mnnz(m,n,a,nz)
import
integer(psb_ipk_), intent(in) :: m,n
class(psb_z_csr_sparse_mat), intent(inout) :: a
integer(psb_ipk_), intent(in), optional :: nz
end subroutine psb_z_csr_allocate_mnnz
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_print
interface
subroutine psb_z_csr_print(iout,a,iv,head,ivr,ivc)
import
integer(psb_ipk_), intent(in) :: iout
class(psb_z_csr_sparse_mat), intent(in) :: a
integer(psb_lpk_), intent(in), optional :: iv(:)
character(len=*), optional :: head
integer(psb_lpk_), intent(in), optional :: ivr(:), ivc(:)
end subroutine psb_z_csr_print
end interface
!
!> Function tril:
!! \memberof psb_z_base_sparse_mat
!! \brief Copy the lower triangle, i.e. all entries
!! A(I,J) such that J-I <= DIAG
!! default value is DIAG=0, i.e. lower triangle up to
!! the main diagonal.
!! DIAG=-1 means copy the strictly lower triangle
!! DIAG= 1 means copy the lower triangle plus the first diagonal
!! of the upper triangle.
!! Moreover, apply a clipping by copying entries A(I,J) only if
!! IMIN<=I<=IMAX
!! JMIN<=J<=JMAX
!!
!! \param l the output (sub)matrix
!! \param info return code
!! \param diag [0] the last diagonal (J-I) to be considered.
!! \param imin [1] the minimum row index we are interested in
!! \param imax [a\%get_nrows()] the minimum row index we are interested in
!! \param jmin [1] minimum col index
!! \param jmax [a\%get_ncols()] maximum col index
!! \param iren(:) [none] an array to return renumbered indices (iren(ia(:)),iren(ja(:))
!! \param rscale [false] map [min(ia(:)):max(ia(:))] onto [1:max(ia(:))-min(ia(:))+1]
!! \param cscale [false] map [min(ja(:)):max(ja(:))] onto [1:max(ja(:))-min(ja(:))+1]
!! ( iren cannot be specified with rscale/cscale)
!! \param append [false] append to ia,ja
!! \param nzin [none] if append, then first new entry should go in entry nzin+1
!! \param u [none] copy of the complementary triangle
!!
!
interface
subroutine psb_z_csr_tril(a,l,info,diag,imin,imax,&
& jmin,jmax,rscale,cscale,u)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
class(psb_z_coo_sparse_mat), intent(out) :: l
integer(psb_ipk_),intent(out) :: info
integer(psb_ipk_), intent(in), optional :: diag,imin,imax,jmin,jmax
logical, intent(in), optional :: rscale,cscale
class(psb_z_coo_sparse_mat), optional, intent(out) :: u
end subroutine psb_z_csr_tril
end interface
!
!> Function triu:
!! \memberof psb_z_csr_sparse_mat
!! \brief Copy the upper triangle, i.e. all entries
!! A(I,J) such that DIAG <= J-I
!! default value is DIAG=0, i.e. upper triangle from
!! the main diagonal up.
!! DIAG= 1 means copy the strictly upper triangle
!! DIAG=-1 means copy the upper triangle plus the first diagonal
!! of the lower triangle.
!! Moreover, apply a clipping by copying entries A(I,J) only if
!! IMIN<=I<=IMAX
!! JMIN<=J<=JMAX
!! Optionally copies the lower triangle at the same time
!!
!! \param u the output (sub)matrix
!! \param info return code
!! \param diag [0] the last diagonal (J-I) to be considered.
!! \param imin [1] the minimum row index we are interested in
!! \param imax [a\%get_nrows()] the minimum row index we are interested in
!! \param jmin [1] minimum col index
!! \param jmax [a\%get_ncols()] maximum col index
!! \param iren(:) [none] an array to return renumbered indices (iren(ia(:)),iren(ja(:))
!! \param rscale [false] map [min(ia(:)):max(ia(:))] onto [1:max(ia(:))-min(ia(:))+1]
!! \param cscale [false] map [min(ja(:)):max(ja(:))] onto [1:max(ja(:))-min(ja(:))+1]
!! ( iren cannot be specified with rscale/cscale)
!! \param append [false] append to ia,ja
!! \param nzin [none] if append, then first new entry should go in entry nzin+1
!! \param l [none] copy of the complementary triangle
!!
!
interface
subroutine psb_z_csr_triu(a,u,info,diag,imin,imax,&
& jmin,jmax,rscale,cscale,l)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
class(psb_z_coo_sparse_mat), intent(out) :: u
integer(psb_ipk_),intent(out) :: info
integer(psb_ipk_), intent(in), optional :: diag,imin,imax,jmin,jmax
logical, intent(in), optional :: rscale,cscale
class(psb_z_coo_sparse_mat), optional, intent(out) :: l
end subroutine psb_z_csr_triu
end interface
!
!>
!! \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_clean_zeros
!
interface
subroutine psb_z_csr_clean_zeros(a, info)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_csr_clean_zeros
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_cp_to_coo
interface
subroutine psb_z_cp_csr_to_coo(a,b,info)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
class(psb_z_coo_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_cp_csr_to_coo
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_cp_from_coo
interface
subroutine psb_z_cp_csr_from_coo(a,b,info)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
class(psb_z_coo_sparse_mat), intent(in) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_cp_csr_from_coo
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_cp_to_fmt
interface
subroutine psb_z_cp_csr_to_fmt(a,b,info)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
class(psb_z_base_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_cp_csr_to_fmt
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_cp_from_fmt
interface
subroutine psb_z_cp_csr_from_fmt(a,b,info)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
class(psb_z_base_sparse_mat), intent(in) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_cp_csr_from_fmt
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_mv_to_coo
interface
subroutine psb_z_mv_csr_to_coo(a,b,info)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
class(psb_z_coo_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_mv_csr_to_coo
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_mv_from_coo
interface
subroutine psb_z_mv_csr_from_coo(a,b,info)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
class(psb_z_coo_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_mv_csr_from_coo
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_mv_to_fmt
interface
subroutine psb_z_mv_csr_to_fmt(a,b,info)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
class(psb_z_base_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_mv_csr_to_fmt
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_mv_from_fmt
interface
subroutine psb_z_mv_csr_from_fmt(a,b,info)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
class(psb_z_base_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_mv_csr_from_fmt
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_cp_from
interface
subroutine psb_z_csr_cp_from(a,b)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
type(psb_z_csr_sparse_mat), intent(in) :: b
end subroutine psb_z_csr_cp_from
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_mv_from
interface
subroutine psb_z_csr_mv_from(a,b)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
type(psb_z_csr_sparse_mat), intent(inout) :: b
end subroutine psb_z_csr_mv_from
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_csput_a
interface
subroutine psb_z_csr_csput_a(nz,ia,ja,val,a,imin,imax,jmin,jmax,info)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
complex(psb_dpk_), intent(in) :: val(:)
integer(psb_ipk_), intent(in) :: nz,ia(:), ja(:),&
& imin,imax,jmin,jmax
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_csr_csput_a
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_base_mat_mod::psb_base_csgetptn
interface
subroutine psb_z_csr_csgetptn(imin,imax,a,nz,ia,ja,info,&
& jmin,jmax,iren,append,nzin,rscale,cscale)
import
class(psb_z_csr_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_z_csr_csgetptn
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_csgetrow
interface
subroutine psb_z_csr_csgetrow(imin,imax,a,nz,ia,ja,val,info,&
& jmin,jmax,iren,append,nzin,rscale,cscale,chksz)
import
class(psb_z_csr_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(:)
complex(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,chksz
end subroutine psb_z_csr_csgetrow
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_cssv
interface
subroutine psb_z_csr_cssv(alpha,a,x,beta,y,info,trans)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(in) :: alpha, beta, x(:)
complex(psb_dpk_), intent(inout) :: y(:)
integer(psb_ipk_), intent(out) :: info
character, optional, intent(in) :: trans
end subroutine psb_z_csr_cssv
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_cssm
interface
subroutine psb_z_csr_cssm(alpha,a,x,beta,y,info,trans)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(in) :: alpha, beta, x(:,:)
complex(psb_dpk_), intent(inout) :: y(:,:)
integer(psb_ipk_), intent(out) :: info
character, optional, intent(in) :: trans
end subroutine psb_z_csr_cssm
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_csmv
interface
subroutine psb_z_csr_csmv(alpha,a,x,beta,y,info,trans)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(in) :: alpha, beta, x(:)
complex(psb_dpk_), intent(inout) :: y(:)
integer(psb_ipk_), intent(out) :: info
character, optional, intent(in) :: trans
end subroutine psb_z_csr_csmv
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_csmm
interface
subroutine psb_z_csr_csmm(alpha,a,x,beta,y,info,trans)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(in) :: alpha, beta, x(:,:)
complex(psb_dpk_), intent(inout) :: y(:,:)
integer(psb_ipk_), intent(out) :: info
character, optional, intent(in) :: trans
end subroutine psb_z_csr_csmm
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_maxval
interface
function psb_z_csr_maxval(a) result(res)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
real(psb_dpk_) :: res
end function psb_z_csr_maxval
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_csnmi
interface
function psb_z_csr_csnmi(a) result(res)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
real(psb_dpk_) :: res
end function psb_z_csr_csnmi
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_rowsum
interface
subroutine psb_z_csr_rowsum(d,a)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(out) :: d(:)
end subroutine psb_z_csr_rowsum
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_arwsum
interface
subroutine psb_z_csr_arwsum(d,a)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(out) :: d(:)
end subroutine psb_z_csr_arwsum
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_colsum
interface
subroutine psb_z_csr_colsum(d,a)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(out) :: d(:)
end subroutine psb_z_csr_colsum
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_aclsum
interface
subroutine psb_z_csr_aclsum(d,a)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(out) :: d(:)
end subroutine psb_z_csr_aclsum
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_get_diag
interface
subroutine psb_z_csr_get_diag(a,d,info)
import
class(psb_z_csr_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(out) :: d(:)
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_csr_get_diag
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_scal
interface
subroutine psb_z_csr_scal(d,a,info,side)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
complex(psb_dpk_), intent(in) :: d(:)
integer(psb_ipk_), intent(out) :: info
character, intent(in), optional :: side
end subroutine psb_z_csr_scal
end interface
!> \memberof psb_z_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_z_base_scals
interface
subroutine psb_z_csr_scals(d,a,info)
import
class(psb_z_csr_sparse_mat), intent(inout) :: a
complex(psb_dpk_), intent(in) :: d
integer(psb_ipk_), intent(out) :: info
end subroutine psb_z_csr_scals
end interface
!> \namespace psb_base_mod \class psb_lz_csr_sparse_mat
!! \extends psb_lz_base_mat_mod::psb_lz_base_sparse_mat
!!
!! psb_lz_csr_sparse_mat type and the related methods.
!! This is a very common storage type, and is the default for assembled
!! matrices in our library
type, extends(psb_lz_base_sparse_mat) :: psb_lz_csr_sparse_mat
!> Pointers to beginning of rows in JA and VAL.
integer(psb_lpk_), allocatable :: irp(:)
!> Column indices.
integer(psb_lpk_), allocatable :: ja(:)
!> Coefficient values.
complex(psb_dpk_), allocatable :: val(:)
contains
procedure, pass(a) :: is_by_rows => lz_csr_is_by_rows
procedure, pass(a) :: get_size => lz_csr_get_size
procedure, pass(a) :: get_nzeros => lz_csr_get_nzeros
procedure, nopass :: get_fmt => lz_csr_get_fmt
procedure, pass(a) :: sizeof => lz_csr_sizeof
procedure, pass(a) :: reallocate_nz => psb_lz_csr_reallocate_nz
procedure, pass(a) :: allocate_mnnz => psb_lz_csr_allocate_mnnz
procedure, pass(a) :: tril => psb_lz_csr_tril
procedure, pass(a) :: triu => psb_lz_csr_triu
procedure, pass(a) :: cp_to_coo => psb_lz_cp_csr_to_coo
procedure, pass(a) :: cp_from_coo => psb_lz_cp_csr_from_coo
procedure, pass(a) :: cp_to_fmt => psb_lz_cp_csr_to_fmt
procedure, pass(a) :: cp_from_fmt => psb_lz_cp_csr_from_fmt
procedure, pass(a) :: mv_to_coo => psb_lz_mv_csr_to_coo
procedure, pass(a) :: mv_from_coo => psb_lz_mv_csr_from_coo
procedure, pass(a) :: mv_to_fmt => psb_lz_mv_csr_to_fmt
procedure, pass(a) :: mv_from_fmt => psb_lz_mv_csr_from_fmt
procedure, pass(a) :: clean_zeros => psb_lz_csr_clean_zeros
procedure, pass(a) :: csput_a => psb_lz_csr_csput_a
procedure, pass(a) :: get_diag => psb_lz_csr_get_diag
procedure, pass(a) :: csgetptn => psb_lz_csr_csgetptn
procedure, pass(a) :: csgetrow => psb_lz_csr_csgetrow
procedure, pass(a) :: get_nz_row => lz_csr_get_nz_row
procedure, pass(a) :: reinit => psb_lz_csr_reinit
procedure, pass(a) :: trim => psb_lz_csr_trim
procedure, pass(a) :: print => psb_lz_csr_print
procedure, pass(a) :: free => lz_csr_free
procedure, pass(a) :: mold => psb_lz_csr_mold
procedure, pass(a) :: scals => psb_lz_csr_scals
procedure, pass(a) :: scalv => psb_lz_csr_scal
procedure, pass(a) :: maxval => psb_lz_csr_maxval
procedure, pass(a) :: spnmi => psb_lz_csr_csnmi
procedure, pass(a) :: rowsum => psb_lz_csr_rowsum
procedure, pass(a) :: arwsum => psb_lz_csr_arwsum
procedure, pass(a) :: colsum => psb_lz_csr_colsum
procedure, pass(a) :: aclsum => psb_lz_csr_aclsum
end type psb_lz_csr_sparse_mat
private :: lz_csr_get_nzeros, lz_csr_free, lz_csr_get_fmt, &
& lz_csr_get_size, lz_csr_sizeof, lz_csr_get_nz_row, &
& lz_csr_is_by_rows
!> \memberof psb_lz_csr_sparse_mat
!| \see psb_base_mat_mod::psb_base_reallocate_nz
interface
subroutine psb_lz_csr_reallocate_nz(nz,a)
import
integer(psb_lpk_), intent(in) :: nz
class(psb_lz_csr_sparse_mat), intent(inout) :: a
end subroutine psb_lz_csr_reallocate_nz
end interface
!> \memberof psb_lz_csr_sparse_mat
!| \see psb_base_mat_mod::psb_base_reinit
interface
subroutine psb_lz_csr_reinit(a,clear)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
logical, intent(in), optional :: clear
end subroutine psb_lz_csr_reinit
end interface
!> \memberof psb_lz_csr_sparse_mat
!| \see psb_base_mat_mod::psb_base_trim
interface
subroutine psb_lz_csr_trim(a)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
end subroutine psb_lz_csr_trim
end interface
!> \memberof psb_lz_csr_sparse_mat
!| \see psb_base_mat_mod::psb_base_mold
interface
subroutine psb_lz_csr_mold(a,b,info)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
class(psb_lz_base_sparse_mat), intent(inout), allocatable :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_csr_mold
end interface
!> \memberof psb_lz_csr_sparse_mat
!| \see psb_base_mat_mod::psb_base_allocate_mnnz
interface
subroutine psb_lz_csr_allocate_mnnz(m,n,a,nz)
import
integer(psb_lpk_), intent(in) :: m,n
class(psb_lz_csr_sparse_mat), intent(inout) :: a
integer(psb_lpk_), intent(in), optional :: nz
end subroutine psb_lz_csr_allocate_mnnz
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_print
interface
subroutine psb_lz_csr_print(iout,a,iv,head,ivr,ivc)
import
integer(psb_ipk_), intent(in) :: iout
class(psb_lz_csr_sparse_mat), intent(in) :: a
integer(psb_lpk_), intent(in), optional :: iv(:)
character(len=*), optional :: head
integer(psb_lpk_), intent(in), optional :: ivr(:), ivc(:)
end subroutine psb_lz_csr_print
end interface
!
!> Function tril:
!! \memberof psb_z_base_sparse_mat
!! \brief Copy the lower triangle, i.e. all entries
!! A(I,J) such that J-I <= DIAG
!! default value is DIAG=0, i.e. lower triangle up to
!! the main diagonal.
!! DIAG=-1 means copy the strictly lower triangle
!! DIAG= 1 means copy the lower triangle plus the first diagonal
!! of the upper triangle.
!! Moreover, apply a clipping by copying entries A(I,J) only if
!! IMIN<=I<=IMAX
!! JMIN<=J<=JMAX
!!
!! \param l the output (sub)matrix
!! \param info return code
!! \param diag [0] the last diagonal (J-I) to be considered.
!! \param imin [1] the minimum row index we are interested in
!! \param imax [a\%get_nrows()] the minimum row index we are interested in
!! \param jmin [1] minimum col index
!! \param jmax [a\%get_ncols()] maximum col index
!! \param iren(:) [none] an array to return renumbered indices (iren(ia(:)),iren(ja(:))
!! \param rscale [false] map [min(ia(:)):max(ia(:))] onto [1:max(ia(:))-min(ia(:))+1]
!! \param cscale [false] map [min(ja(:)):max(ja(:))] onto [1:max(ja(:))-min(ja(:))+1]
!! ( iren cannot be specified with rscale/cscale)
!! \param append [false] append to ia,ja
!! \param nzin [none] if append, then first new entry should go in entry nzin+1
!! \param u [none] copy of the complementary triangle
!!
!
interface
subroutine psb_lz_csr_tril(a,l,info,diag,imin,imax,&
& jmin,jmax,rscale,cscale,u)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
class(psb_lz_coo_sparse_mat), intent(out) :: l
integer(psb_ipk_),intent(out) :: info
integer(psb_lpk_), intent(in), optional :: diag,imin,imax,jmin,jmax
logical, intent(in), optional :: rscale,cscale
class(psb_lz_coo_sparse_mat), optional, intent(out) :: u
end subroutine psb_lz_csr_tril
end interface
!
!> Function triu:
!! \memberof psb_z_csr_sparse_mat
!! \brief Copy the upper triangle, i.e. all entries
!! A(I,J) such that DIAG <= J-I
!! default value is DIAG=0, i.e. upper triangle from
!! the main diagonal up.
!! DIAG= 1 means copy the strictly upper triangle
!! DIAG=-1 means copy the upper triangle plus the first diagonal
!! of the lower triangle.
!! Moreover, apply a clipping by copying entries A(I,J) only if
!! IMIN<=I<=IMAX
!! JMIN<=J<=JMAX
!! Optionally copies the lower triangle at the same time
!!
!! \param u the output (sub)matrix
!! \param info return code
!! \param diag [0] the last diagonal (J-I) to be considered.
!! \param imin [1] the minimum row index we are interested in
!! \param imax [a\%get_nrows()] the minimum row index we are interested in
!! \param jmin [1] minimum col index
!! \param jmax [a\%get_ncols()] maximum col index
!! \param iren(:) [none] an array to return renumbered indices (iren(ia(:)),iren(ja(:))
!! \param rscale [false] map [min(ia(:)):max(ia(:))] onto [1:max(ia(:))-min(ia(:))+1]
!! \param cscale [false] map [min(ja(:)):max(ja(:))] onto [1:max(ja(:))-min(ja(:))+1]
!! ( iren cannot be specified with rscale/cscale)
!! \param append [false] append to ia,ja
!! \param nzin [none] if append, then first new entry should go in entry nzin+1
!! \param l [none] copy of the complementary triangle
!!
!
interface
subroutine psb_lz_csr_triu(a,u,info,diag,imin,imax,&
& jmin,jmax,rscale,cscale,l)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
class(psb_lz_coo_sparse_mat), intent(out) :: u
integer(psb_ipk_),intent(out) :: info
integer(psb_lpk_), intent(in), optional :: diag,imin,imax,jmin,jmax
logical, intent(in), optional :: rscale,cscale
class(psb_lz_coo_sparse_mat), optional, intent(out) :: l
end subroutine psb_lz_csr_triu
end interface
!
!>
!! \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_clean_zeros
!
interface
subroutine psb_lz_csr_clean_zeros(a, info)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_csr_clean_zeros
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_cp_to_coo
interface
subroutine psb_lz_cp_csr_to_coo(a,b,info)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
class(psb_lz_coo_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_cp_csr_to_coo
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_cp_from_coo
interface
subroutine psb_lz_cp_csr_from_coo(a,b,info)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
class(psb_lz_coo_sparse_mat), intent(in) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_cp_csr_from_coo
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_cp_to_fmt
interface
subroutine psb_lz_cp_csr_to_fmt(a,b,info)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
class(psb_lz_base_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_cp_csr_to_fmt
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_cp_from_fmt
interface
subroutine psb_lz_cp_csr_from_fmt(a,b,info)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
class(psb_lz_base_sparse_mat), intent(in) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_cp_csr_from_fmt
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_mv_to_coo
interface
subroutine psb_lz_mv_csr_to_coo(a,b,info)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
class(psb_lz_coo_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_mv_csr_to_coo
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_mv_from_coo
interface
subroutine psb_lz_mv_csr_from_coo(a,b,info)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
class(psb_lz_coo_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_mv_csr_from_coo
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_mv_to_fmt
interface
subroutine psb_lz_mv_csr_to_fmt(a,b,info)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
class(psb_lz_base_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_mv_csr_to_fmt
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_mv_from_fmt
interface
subroutine psb_lz_mv_csr_from_fmt(a,b,info)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
class(psb_lz_base_sparse_mat), intent(inout) :: b
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_mv_csr_from_fmt
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_cp_from
interface
subroutine psb_lz_csr_cp_from(a,b)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
type(psb_lz_csr_sparse_mat), intent(in) :: b
end subroutine psb_lz_csr_cp_from
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_mv_from
interface
subroutine psb_lz_csr_mv_from(a,b)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
type(psb_lz_csr_sparse_mat), intent(inout) :: b
end subroutine psb_lz_csr_mv_from
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_csput_a
interface
subroutine psb_lz_csr_csput_a(nz,ia,ja,val,a,imin,imax,jmin,jmax,info)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
complex(psb_dpk_), intent(in) :: val(:)
integer(psb_lpk_), intent(in) :: nz,ia(:), ja(:),&
& imin,imax,jmin,jmax
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_csr_csput_a
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_base_mat_mod::psb_base_csgetptn
interface
subroutine psb_lz_csr_csgetptn(imin,imax,a,nz,ia,ja,info,&
& jmin,jmax,iren,append,nzin,rscale,cscale)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
integer(psb_lpk_), intent(in) :: imin,imax
integer(psb_lpk_), intent(out) :: nz
integer(psb_lpk_), allocatable, intent(inout) :: ia(:), ja(:)
integer(psb_ipk_),intent(out) :: info
logical, intent(in), optional :: append
integer(psb_lpk_), intent(in), optional :: iren(:)
integer(psb_lpk_), intent(in), optional :: jmin,jmax, nzin
logical, intent(in), optional :: rscale,cscale
end subroutine psb_lz_csr_csgetptn
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_csgetrow
interface
subroutine psb_lz_csr_csgetrow(imin,imax,a,nz,ia,ja,val,info,&
& jmin,jmax,iren,append,nzin,rscale,cscale)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
integer(psb_lpk_), intent(in) :: imin,imax
integer(psb_lpk_), intent(out) :: nz
integer(psb_lpk_), allocatable, intent(inout) :: ia(:), ja(:)
complex(psb_dpk_), allocatable, intent(inout) :: val(:)
integer(psb_ipk_),intent(out) :: info
logical, intent(in), optional :: append
integer(psb_lpk_), intent(in), optional :: iren(:)
integer(psb_lpk_), intent(in), optional :: jmin,jmax, nzin
logical, intent(in), optional :: rscale,cscale
end subroutine psb_lz_csr_csgetrow
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_get_diag
interface
subroutine psb_lz_csr_get_diag(a,d,info)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(out) :: d(:)
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_csr_get_diag
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_scal
interface
subroutine psb_lz_csr_scal(d,a,info,side)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
complex(psb_dpk_), intent(in) :: d(:)
integer(psb_ipk_), intent(out) :: info
character, intent(in), optional :: side
end subroutine psb_lz_csr_scal
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_lz_base_mat_mod::psb_lz_base_scals
interface
subroutine psb_lz_csr_scals(d,a,info)
import
class(psb_lz_csr_sparse_mat), intent(inout) :: a
complex(psb_dpk_), intent(in) :: d
integer(psb_ipk_), intent(out) :: info
end subroutine psb_lz_csr_scals
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_lz_base_maxval
interface
function psb_lz_csr_maxval(a) result(res)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
real(psb_dpk_) :: res
end function psb_lz_csr_maxval
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_lz_base_csnmi
interface
function psb_lz_csr_csnmi(a) result(res)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
real(psb_dpk_) :: res
end function psb_lz_csr_csnmi
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_lz_base_rowsum
interface
subroutine psb_lz_csr_rowsum(d,a)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(out) :: d(:)
end subroutine psb_lz_csr_rowsum
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_lz_base_arwsum
interface
subroutine psb_lz_csr_arwsum(d,a)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(out) :: d(:)
end subroutine psb_lz_csr_arwsum
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_lz_base_colsum
interface
subroutine psb_lz_csr_colsum(d,a)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(out) :: d(:)
end subroutine psb_lz_csr_colsum
end interface
!> \memberof psb_lz_csr_sparse_mat
!! \see psb_z_base_mat_mod::psb_lz_base_aclsum
interface
subroutine psb_lz_csr_aclsum(d,a)
import
class(psb_lz_csr_sparse_mat), intent(in) :: a
real(psb_dpk_), intent(out) :: d(:)
end subroutine psb_lz_csr_aclsum
end interface
contains
! == ===================================
!
!
!
! Getters
!
!
!
!
!
! == ===================================
function z_csr_is_by_rows(a) result(res)
implicit none
class(psb_z_csr_sparse_mat), intent(in) :: a
logical :: res
res = .true.
end function z_csr_is_by_rows
function z_csr_sizeof(a) result(res)
implicit none
class(psb_z_csr_sparse_mat), intent(in) :: a
integer(psb_epk_) :: res
res = 2 * psb_sizeof_ip
res = res + (2*psb_sizeof_dp) * psb_size(a%val)
res = res + psb_sizeof_ip * psb_size(a%irp)
res = res + psb_sizeof_ip * psb_size(a%ja)
end function z_csr_sizeof
function z_csr_get_fmt() result(res)
implicit none
character(len=5) :: res
res = 'CSR'
end function z_csr_get_fmt
function z_csr_get_nzeros(a) result(res)
implicit none
class(psb_z_csr_sparse_mat), intent(in) :: a
integer(psb_ipk_) :: res
res = a%irp(a%get_nrows()+1)-1
end function z_csr_get_nzeros
function z_csr_get_size(a) result(res)
implicit none
class(psb_z_csr_sparse_mat), intent(in) :: a
integer(psb_ipk_) :: res
res = -1
if (allocated(a%ja)) then
res = size(a%ja)
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 z_csr_get_size
function z_csr_get_nz_row(idx,a) result(res)
implicit none
class(psb_z_csr_sparse_mat), intent(in) :: a
integer(psb_ipk_), intent(in) :: idx
integer(psb_ipk_) :: res
res = 0
if ((1<=idx).and.(idx<=a%get_nrows())) then
res = a%irp(idx+1)-a%irp(idx)
end if
end function z_csr_get_nz_row
! == ===================================
!
!
!
! Data management
!
!
!
!
!
! == ===================================
subroutine z_csr_free(a)
implicit none
class(psb_z_csr_sparse_mat), intent(inout) :: a
if (allocated(a%irp)) deallocate(a%irp)
if (allocated(a%ja)) deallocate(a%ja)
if (allocated(a%val)) deallocate(a%val)
call a%set_null()
call a%set_nrows(0_psb_ipk_)
call a%set_ncols(0_psb_ipk_)
return
end subroutine z_csr_free
! == ===================================
!
!
!
! Getters
!
!
!
!
!
! == ===================================
function lz_csr_is_by_rows(a) result(res)
implicit none
class(psb_lz_csr_sparse_mat), intent(in) :: a
logical :: res
res = .true.
end function lz_csr_is_by_rows
function lz_csr_sizeof(a) result(res)
implicit none
class(psb_lz_csr_sparse_mat), intent(in) :: a
integer(psb_epk_) :: res
res = 2 * psb_sizeof_lp
res = res + (2*psb_sizeof_dp) * psb_size(a%val)
res = res + psb_sizeof_lp * psb_size(a%irp)
res = res + psb_sizeof_lp * psb_size(a%ja)
end function lz_csr_sizeof
function lz_csr_get_fmt() result(res)
implicit none
character(len=5) :: res
res = 'CSR'
end function lz_csr_get_fmt
function lz_csr_get_nzeros(a) result(res)
implicit none
class(psb_lz_csr_sparse_mat), intent(in) :: a
integer(psb_lpk_) :: res
res = a%irp(a%get_nrows()+1)-1
end function lz_csr_get_nzeros
function lz_csr_get_size(a) result(res)
implicit none
class(psb_lz_csr_sparse_mat), intent(in) :: a
integer(psb_lpk_) :: res
res = -1
if (allocated(a%ja)) then
res = size(a%ja)
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 lz_csr_get_size
function lz_csr_get_nz_row(idx,a) result(res)
implicit none
class(psb_lz_csr_sparse_mat), intent(in) :: a
integer(psb_lpk_), intent(in) :: idx
integer(psb_lpk_) :: res
res = 0
if ((1<=idx).and.(idx<=a%get_nrows())) then
res = a%irp(idx+1)-a%irp(idx)
end if
end function lz_csr_get_nz_row
! == ===================================
!
!
!
! Data management
!
!
!
!
!
! == ===================================
subroutine lz_csr_free(a)
implicit none
class(psb_lz_csr_sparse_mat), intent(inout) :: a
if (allocated(a%irp)) deallocate(a%irp)
if (allocated(a%ja)) deallocate(a%ja)
if (allocated(a%val)) deallocate(a%val)
call a%set_null()
call a%set_nrows(0_psb_lpk_)
call a%set_ncols(0_psb_lpk_)
return
end subroutine lz_csr_free
end module psb_z_csr_mat_mod