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.
226 lines
7.4 KiB
Fortran
226 lines
7.4 KiB
Fortran
C
|
|
C Parallel Sparse BLAS version 2.2
|
|
C (C) Copyright 2006/2007/2008
|
|
C Salvatore Filippone University of Rome Tor Vergata
|
|
C Alfredo Buttari University of Rome Tor Vergata
|
|
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
|
|
C Assumption: the triangular matrix has the diagonal element in the
|
|
C "right" place, i.e. the last in its row for Lower and the first
|
|
C for Upper.
|
|
C
|
|
SUBROUTINE ZCOOSV (UPLO,TRANS,DIAG,N,AS,IA,JA,INFOA,B,X,IERROR)
|
|
use psb_const_mod
|
|
use psb_error_mod
|
|
complex(psb_dpk_) ZERO
|
|
PARAMETER (ZERO=(0.0D0,0.0D0))
|
|
INTEGER N,IERROR
|
|
CHARACTER DIAG, TRANS, UPLO
|
|
complex(psb_dpk_) AS(*), B(*), X(*)
|
|
INTEGER IA(*), JA(*),INFOA(*)
|
|
complex(psb_dpk_) ACC
|
|
INTEGER I, J, K, NNZ, II, JJ
|
|
LOGICAL LOW, TRA, UNI
|
|
integer :: debug_level, debug_unit
|
|
character(len=20) :: name='zcoosv'
|
|
|
|
debug_unit = psb_get_debug_unit()
|
|
debug_level = psb_get_debug_level()
|
|
|
|
UNI = (DIAG.EQ.'U')
|
|
TRA = (TRANS.EQ.'T')
|
|
LOW = (UPLO.EQ.'L')
|
|
NNZ = INFOA(1)
|
|
IERROR = 0
|
|
if (debug_level>=psb_debug_serial_comp_)
|
|
+ write(debug_unit,*) trim(name),':',n,nnz,diag,trans,uplo
|
|
IF ( .NOT. TRA) THEN
|
|
if (debug_level>=psb_debug_serial_comp_)
|
|
+ write(debug_unit,*) trim(name),': NOT TRA'
|
|
IF (LOW) THEN
|
|
if (debug_level>=psb_debug_serial_comp_)
|
|
+ write(debug_unit,*) trim(name),': LOW'
|
|
IF ( .NOT. UNI) THEN
|
|
if (debug_level>=psb_debug_serial_comp_)
|
|
+ write(debug_unit,*) trim(name),': NOT UNI'
|
|
I = 1
|
|
J = I
|
|
DO WHILE (I.LE.NNZ)
|
|
DO WHILE ((J.LE.NNZ).AND.(IA(J).EQ.IA(I)))
|
|
J = J+1
|
|
ENDDO
|
|
ACC = ZERO
|
|
IR = IA(I)
|
|
DO K = I, J-2
|
|
JC = JA(K)
|
|
ACC = ACC + AS(K)*X(JC)
|
|
ENDDO
|
|
X(IR) = (B(IR)-ACC)/AS(J-1)
|
|
I = J
|
|
ENDDO
|
|
|
|
ELSE IF (UNI) THEN
|
|
C
|
|
C Bug warning: if UNI, some rows might be empty
|
|
C
|
|
I = 1
|
|
if (debug_level>=psb_debug_serial_comp_)
|
|
+ write(debug_unit,*) trim(name),': UNILOW ',
|
|
+ i,n,nnz,uni,tra,low
|
|
DO II = 1, N
|
|
DO WHILE ((I.LE.NNZ).AND.(IA(I).LT.II))
|
|
I = I + 1
|
|
ENDDO
|
|
ACC = ZERO
|
|
IF ((I.LE.NNZ).AND.(IA(I).EQ.II)) THEN
|
|
J = I + 1
|
|
DO WHILE ((J.LE.NNZ).AND.(IA(J).EQ.IA(I)))
|
|
J = J+1
|
|
ENDDO
|
|
DO K = I, J-1
|
|
JC = JA(K)
|
|
ACC = ACC + AS(K)*X(JC)
|
|
ENDDO
|
|
ELSE
|
|
J = I
|
|
ENDIF
|
|
X(II) = (B(II)-ACC)
|
|
I = J
|
|
ENDDO
|
|
|
|
END IF
|
|
|
|
ELSE IF ( .NOT. LOW) THEN
|
|
if (debug_level>=psb_debug_serial_comp_)
|
|
+ write(debug_unit,*) trim(name),': NOT LOW'
|
|
IF ( .NOT. UNI) THEN
|
|
if (debug_level>=psb_debug_serial_comp_)
|
|
+ write(debug_unit,*) trim(name),': NOT UNI'
|
|
I = NNZ
|
|
J = NNZ
|
|
DO WHILE (I.GT.0)
|
|
DO WHILE ((J.GT.0).AND.(IA(J).EQ.IA(I)))
|
|
J = J-1
|
|
ENDDO
|
|
ACC = ZERO
|
|
IR = IA(I)
|
|
DO K = I, J+2,-1
|
|
JC = JA(K)
|
|
ACC = ACC + AS(K)*X(JC)
|
|
ENDDO
|
|
X(IR) = (B(IR)-ACC)/AS(J+1)
|
|
I = J
|
|
ENDDO
|
|
|
|
ELSE IF (UNI) THEN
|
|
if (debug_level>=psb_debug_serial_comp_)
|
|
+ write(debug_unit,*) trim(name),': UNI'
|
|
I = NNZ
|
|
DO II = N,1,-1
|
|
DO WHILE ((I.GT.0).AND.(IA(I).GT.II))
|
|
I = I -1
|
|
ENDDO
|
|
ACC = ZERO
|
|
IF ((I.GT.0).AND.(IA(I).EQ.II)) THEN
|
|
J = I - 1
|
|
DO WHILE ((J.GT.0).AND.(IA(J).EQ.IA(I)))
|
|
J = J-1
|
|
ENDDO
|
|
DO K = I, J+1, -1
|
|
JC = JA(K)
|
|
ACC = ACC + AS(K)*X(JC)
|
|
ENDDO
|
|
ELSE
|
|
J = I
|
|
ENDIF
|
|
X(II) = (B(II)-ACC)
|
|
I = J
|
|
ENDDO
|
|
|
|
END IF
|
|
|
|
END IF
|
|
|
|
ELSE IF (TRA) THEN
|
|
if (debug_level>=psb_debug_serial_comp_)
|
|
+ write(debug_unit,*) trim(name),': TRA'
|
|
IERROR = 3010
|
|
return
|
|
CCCCCCCCCCCCCCCC
|
|
C
|
|
C TBF
|
|
C
|
|
CCCCCCCCCCCCCCCC
|
|
DO 180 I = 1, N
|
|
X(I) = B(I)
|
|
180 CONTINUE
|
|
IF (LOW) THEN
|
|
IF ( .NOT. UNI) THEN
|
|
DO 220 I = N, 1, -1
|
|
X(I) = X(I)/AS(IA(I+1)-1)
|
|
ACC = X(I)
|
|
DO 200 J = IA(I), IA(I+1) - 2
|
|
K = JA(J)
|
|
X(K) = X(K) - AS(J)*ACC
|
|
200 CONTINUE
|
|
220 CONTINUE
|
|
ELSE IF (UNI) THEN
|
|
DO 260 I = N, 1, -1
|
|
ACC = X(I)
|
|
DO 240 J = IA(I), IA(I+1) - 1
|
|
K = JA(J)
|
|
X(K) = X(K) - AS(J)*ACC
|
|
240 CONTINUE
|
|
260 CONTINUE
|
|
END IF
|
|
ELSE IF ( .NOT. LOW) THEN
|
|
IF ( .NOT. UNI) THEN
|
|
DO 300 I = 1, N
|
|
X(I) = X(I)/AS(IA(I))
|
|
ACC = X(I)
|
|
DO 280 J = IA(I) + 1, IA(I+1) - 1
|
|
K = JA(J)
|
|
X(K) = X(K) - AS(J)*ACC
|
|
280 CONTINUE
|
|
300 CONTINUE
|
|
ELSE IF (UNI) THEN
|
|
DO 340 I = 1, N
|
|
ACC = X(I)
|
|
DO 320 J = IA(I), IA(I+1) - 1
|
|
K = JA(J)
|
|
X(K) = X(K) - AS(J)*ACC
|
|
320 CONTINUE
|
|
340 CONTINUE
|
|
END IF
|
|
END IF
|
|
END IF
|
|
RETURN
|
|
END
|
|
|
|
|
|
|