You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
199 lines
5.4 KiB
Fortran
199 lines
5.4 KiB
Fortran
C
|
|
C Parallel Sparse BLAS version 3.4
|
|
C (C) Copyright 2006, 2010, 2015
|
|
C Salvatore Filippone University of Rome Tor Vergata
|
|
C Alfredo Buttari CNRS-IRIT, Toulouse
|
|
C
|
|
C Redistribution and use in source and binary forms, with or without
|
|
C modification, are permitted provided that the following conditions
|
|
C are met:
|
|
C 1. Redistributions of source code must retain the above copyright
|
|
C notice, this list of conditions and the following disclaimer.
|
|
C 2. Redistributions in binary form must reproduce the above copyright
|
|
C notice, this list of conditions, and the following disclaimer in the
|
|
C documentation and/or other materials provided with the distribution.
|
|
C 3. The name of the PSBLAS group or the names of its contributors may
|
|
C not be used to endorse or promote products derived from this
|
|
C software without specific written permission.
|
|
C
|
|
C THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
C ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
C TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
C PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
|
|
C BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
C CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
C SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
C INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
C CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
C ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
C POSSIBILITY OF SUCH DAMAGE.
|
|
C
|
|
C
|
|
subroutine iaxpby(m, n, alpha, X, lldx, beta, Y, lldy, info)
|
|
use psb_const_mod
|
|
integer n, m, lldx, lldy, info
|
|
integer(psb_ipk_) X(lldx,*), Y(lldy,*)
|
|
integer(psb_ipk_) alpha, beta
|
|
integer(psb_ipk_) :: i, j
|
|
integer(psb_ipk_) :: int_err(5)
|
|
character name*20
|
|
name='saxpby'
|
|
|
|
|
|
C
|
|
C Error handling
|
|
C
|
|
info = psb_success_
|
|
if (m.lt.0) then
|
|
info=psb_err_iarg_neg_
|
|
int_err(1)=1
|
|
int_err(2)=m
|
|
call fcpsb_errpush(info,name,int_err)
|
|
goto 9999
|
|
else if (n.lt.0) then
|
|
info=psb_err_iarg_neg_
|
|
int_err(1)=1
|
|
int_err(2)=n
|
|
call fcpsb_errpush(info,name,int_err)
|
|
goto 9999
|
|
else if (lldx.lt.max(1,m)) then
|
|
info=psb_err_iarg_not_gtia_ii_
|
|
int_err(1)=5
|
|
int_err(2)=1
|
|
int_err(3)=lldx
|
|
int_err(4)=m
|
|
call fcpsb_errpush(info,name,int_err)
|
|
goto 9999
|
|
else if (lldy.lt.max(1,m)) then
|
|
info=psb_err_iarg_not_gtia_ii_
|
|
int_err(1)=8
|
|
int_err(2)=1
|
|
int_err(3)=lldy
|
|
int_err(4)=m
|
|
call fcpsb_errpush(info,name,int_err)
|
|
goto 9999
|
|
endif
|
|
|
|
if (alpha.eq.izero) then
|
|
if (beta.eq.izero) then
|
|
do j=1, n
|
|
do i=1,m
|
|
y(i,j) = izero
|
|
enddo
|
|
enddo
|
|
else if (beta.eq.ione) then
|
|
c$$$
|
|
c$$$ Do nothing!
|
|
c$$$
|
|
|
|
else if (beta.eq.-ione) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = - y(i,j)
|
|
enddo
|
|
enddo
|
|
else
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = beta*y(i,j)
|
|
enddo
|
|
enddo
|
|
endif
|
|
|
|
else if (alpha.eq.ione) then
|
|
|
|
if (beta.eq.izero) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = x(i,j)
|
|
enddo
|
|
enddo
|
|
else if (beta.eq.ione) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = x(i,j) + y(i,j)
|
|
enddo
|
|
enddo
|
|
|
|
else if (beta.eq.-ione) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = x(i,j) - y(i,j)
|
|
enddo
|
|
enddo
|
|
else
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = x(i,j) + beta*y(i,j)
|
|
enddo
|
|
enddo
|
|
endif
|
|
|
|
else if (alpha.eq.-ione) then
|
|
|
|
if (beta.eq.izero) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = -x(i,j)
|
|
enddo
|
|
enddo
|
|
else if (beta.eq.ione) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = -x(i,j) + y(i,j)
|
|
enddo
|
|
enddo
|
|
|
|
else if (beta.eq.-ione) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = -x(i,j) - y(i,j)
|
|
enddo
|
|
enddo
|
|
else
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = -x(i,j) + beta*y(i,j)
|
|
enddo
|
|
enddo
|
|
endif
|
|
|
|
else
|
|
|
|
if (beta.eq.izero) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = alpha*x(i,j)
|
|
enddo
|
|
enddo
|
|
else if (beta.eq.ione) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = alpha*x(i,j) + y(i,j)
|
|
enddo
|
|
enddo
|
|
|
|
else if (beta.eq.-ione) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = alpha*x(i,j) - y(i,j)
|
|
enddo
|
|
enddo
|
|
else
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = alpha*x(i,j) + beta*y(i,j)
|
|
enddo
|
|
enddo
|
|
endif
|
|
|
|
endif
|
|
|
|
return
|
|
|
|
9999 continue
|
|
call fcpsb_serror()
|
|
return
|
|
|
|
end
|