C
C Parallel Sparse BLAS v2.0
C (C) Copyright 2006 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
SUBROUTINE DCRJD(TRANS,M,N,UNITD,D,DESCRA,AR,IA1,IA2,INFO,
* IP1,DESCRN,ARN,IAN1,IAN2,INFON,IP2,LARN,LIAN1,
* LIAN2,AUX,LAUX,SIZE_REQ,IERROR)
C
C Purpose
C =======
C
C DCRJD converts a CSR matrix into a Jagged Diagonal.
C
C
C Notes
C =====
C
C Parameters
C ==========
C
C TRANS Whether the transpose should be converted.
C
C M,N Size of input matrix A
C
C UNITD Scaling by diagonal D: 'U'nit, 'L'eft, 'R'ight
C D(*)
C
C DESCRA Input matrix A.
C AR,IA1,
C IA2,INFO
C
C DESCRN Output matrix in JAD format
C ARN,IAN1
C IAN2,INFON, IP1, IP2
C
use psb_const_mod
use psb_spmat_type
IMPLICIT NONE
C
C .. Scalar Arguments ..
INTEGER LARN, LAUX, LAUX2, LIAN1, LIAN2, M, N,
* SIZE_REQ, IERROR
CHARACTER TRANS,UNITD
C .. Array Arguments ..
DOUBLE PRECISION AR(*), ARN(*), D(*), AUX(LAUX)
INTEGER IA1(*), IA2(*), INFO(*), IAN1(*), IAN2(*),
* INFON(*), IP1(*), IP2(*)
CHARACTER DESCRA*11, DESCRN*11
C .. Local Scalars ..
INTEGER IOFF, ISTROW, NJA, NZ, PIA,
+ PJA, PNG, K, MAX_NG, NG, LJA, ERR_ACT
LOGICAL SCALE
logical debug
parameter (debug=.false.)
CHARACTER UPLO
INTEGER MAX_NNZERO
c .. Local Arrays ..
CHARACTER*20 NAME
INTEGER INT_VAL(5), IERRV(5)
C .. External Subroutines ..
EXTERNAL DVTFG
EXTERNAL MAX_NNZERO
C .. Executable Statements ..
C
NAME = 'DCRJD\0'
IERROR = 0
CALL FCPSB_ERRACTIONSAVE(ERR_ACT)
IF (LAUX.LT.4) THEN
IERROR = 60
INT_VAL(1) = 22
INT_VAL(2) = 4
INT_VAL(3) = LAUX
CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
GOTO 9999
ENDIF
IF (TRANS.EQ.'N') THEN
C
NJA = 3*M
SCALE = (UNITD.EQ.'L') ! meaningless
IOFF = 5
C
C SET THE VALUES OF POINTERS TO VECTOR IAN2 AND AUX
C
PNG = IOFF
PIA = PNG + 1
PJA = PIA + 3*(M+2)
IF (DESCRA(1:1).EQ.'G') THEN
C
C CHECK ON DIMENSION OF IAN2 AND AUX
C
MAX_NG = M/PSB_MINJDROWS_+1
IF ((PIA+3*(MAX_NG+1).GT.LIAN2).OR.(M+1 .GT. LAUX)) THEN
C ... If I haven't sufficent memory to compute NG in IAN2 ...
IF (M+1+3*(MAX_NG+1)/PSB_DBLEINT_+1.GT.LAUX) THEN
C ... If I haven't sufficent memory to compute NG in AUX ...
IERROR = 60
INT_VAL(1) = 22
INT_VAL(2) = M+1+3*(MAX_NG+1)/PSB_DBLEINT_+1
INT_VAL(3) = LAUX
CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
GOTO 9999
ELSE
C ... I have sufficent memory to compute NG in AUX ...
CALL DGBLOCK(M,IA2,IP1,AUX(M+2),NG, AUX, LAUX*2)
CALL CHECK_DIM(M,N,AUX(M+2),NG,IA2,
+ NZ,LARN,LIAN1,LIAN2,IERRV)
IF (IERRV(1).NE.0) THEN
SIZE_REQ = MAX(IERRV(2),IERRV(3),IERRV(4))
GOTO 9998
ENDIF
ENDIF
END IF
NZ = IA2(M+1) - 1
C
C ... Initialize Permutation Matrix ...
C
DO 10 K = 1, M
IP1(K) = K
10 CONTINUE
IP2(1) = 0
CALL DGBLOCK(M,IA2,IP1,IAN2(PIA),IAN2(PNG), AUX, LAUX*2)
PJA = PIA + 3*(IAN2(PNG)+1)
C
C CHECK FOR ARRAY DIMENSIONS
C
CALL CHECK_DIM(M,N,IAN2(PIA),IAN2(PNG),IA2,
+ NZ,LARN,LIAN1,LIAN2,IERRV)
IF (IERRV(1) .NE.0) THEN
SIZE_REQ = MAX(IERRV(2),IERRV(3),IERRV(4))
GOTO 9998
ENDIF
LJA = LIAN2-PJA
CALL DGINDEX(M,IAN2(PNG),AR,IA1,IA2,ARN,IAN1,IAN2(PIA),
+ IAN2(PJA), INFON, LARN,LIAN1,
+ LJA,IP1, AUX, LAUX*2, SIZE_REQ,IERROR)
IF (IERROR.NE.0) THEN
CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
GOTO 9999
ENDIF
DESCRN(1:1) = 'G'
DESCRN(2:2) = 'U'
DESCRN(3:3) = 'N'
ELSE IF (DESCRA(1:1).EQ.'S' .AND. DESCRA(2:2).EQ.'U') THEN
C
ISTROW = 1
NZ = 2*(IA2(M+1)-1) - M
C
C CHECK ON DIMENSION OF IAN1 AND ARN
C
IF (NZ .GT. LIAN1) THEN
IERROR = 60
INT_VAL(1) = 19
INT_VAL(2) = NZ
INT_VAL(3) = LAUX
LIAN1 = NZ
CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
GOTO 9999
END IF
IF (NZ .GT. LARN) THEN
IERROR = 60
INT_VAL(1) = 18
INT_VAL(2) = NZ
INT_VAL(3) = LAUX
LIAN1 = NZ
CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
GOTO 9999
END IF
DO 20 K = 1, M
IP2(K) = K
20 CONTINUE
c$$$ CALL DVSSG(M,IA1,IA2,IP2,IAN2(PNG),IP1,IP2,AUX(IWLEN),
c$$$ * AUX(IWORK1))
c$$$ CALL DVSMR(M,AR,IA1,IA2,IAN2(PNG),AUX(IWLEN),IP1,IP2,
c$$$ * IAN2(PIA),IAN2(PJA),IAN1,ARN,AUX(IWORK1),
c$$$ * AUX(IWORK2),NJA,IER,SCALE)
C
ELSE IF (DESCRA(1:1).EQ.'T') THEN
C
C Only unit diagonal so far for triangular matrices.
C
IF (DESCRA(3:3).NE.'U') THEN
IERROR=3022
CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
GOTO 9999
ENDIF
UPLO = DESCRA(2:2)
NZ = IA2(M+1) - 1
C
C ...Compute levels...
C Each level correspond to a block
C IAN1 is used as a work area
CALL DVTFG(UPLO,M,IA1,IA2,IAN2(PNG),IP2,IP1,IAN1,
+ AUX,AUX(M+1),AUX(2*(M+1)))
C Generate IA(1,*)
DO K = 1, IAN2(PNG)+1
IAN2(PIA+3*(K-1)) = IAN1(K)
ENDDO
CALL GEN_BLOCK(M,IAN2(PNG),IAN2(PIA),AUX)
PJA = PIA + 3*(IAN2(PNG)+1)
C
C CHECK FOR ARRAY DIMENSIONS
C
CALL CHECK_DIM(M,N,IAN2(PIA),IAN2(PNG),IA2,
+ NZ,LARN,LIAN1,LIAN2,IERRV)
IF (IERRV(1).NE.0) THEN
size_req = max(ierrv(2),ierrv(3),ierrv(4))
c$$$ write(0,*) "error 2",ierrv(1)
GOTO 9998
endif
LJA = LIAN2-PJA
CALL DGIND_TRI(M,IAN2(PNG),AR,IA1,IA2,ARN,IAN1,IAN2(PIA),
+ IAN2(PJA),LARN,LIAN1,LJA,IP1,AUX, LAUX*2, IERROR)
IF (IERROR.NE.0) THEN
IERROR=4011
CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
GOTO 9999
ENDIF
DESCRN(1:1) = 'T'
DESCRN(2:2) = DESCRA(2:2)
DESCRN(3:3) = DESCRA(3:3)
END IF
C
C SET THE OUTPUT PARAMETER
C
IAN2(1) = PNG
IAN2(2) = PIA
IAN2(3) = PJA
LARN = NZ
LIAN1 = NZ
LIAN2 = 3*M + 10
LAUX2 = 4*M + 2
C
ELSE IF (TRANS.NE.'N') THEN
C
C TO BE DONE
C
IERROR = 3021
CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
GOTO 9999
END IF
9998 CONTINUE
CALL FCPSB_ERRACTIONRESTORE(ERR_ACT)
RETURN
9999 CONTINUE
CALL FCPSB_ERRACTIONRESTORE(ERR_ACT)
IF ( ERR_ACT .NE. 0 ) THEN
CALL FCPSB_SERROR()
RETURN
ENDIF
RETURN
END