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162 lines
5.4 KiB
Fortran
162 lines
5.4 KiB
Fortran
C
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C Parallel Sparse BLAS version 2.2
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C (C) Copyright 2006/2007/2008
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C Salvatore Filippone University of Rome Tor Vergata
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C Alfredo Buttari University of Rome Tor Vergata
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C
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C Redistribution and use in source and binary forms, with or without
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C modification, are permitted provided that the following conditions
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C are met:
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C 1. Redistributions of source code must retain the above copyright
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C notice, this list of conditions and the following disclaimer.
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C 2. Redistributions in binary form must reproduce the above copyright
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C notice, this list of conditions, and the following disclaimer in the
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C documentation and/or other materials provided with the distribution.
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C 3. The name of the PSBLAS group or the names of its contributors may
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C not be used to endorse or promote products derived from this
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C software without specific written permission.
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C
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C THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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C ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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C TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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C PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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C BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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C CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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C SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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C INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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C CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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C ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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C POSSIBILITY OF SUCH DAMAGE.
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C
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C
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C
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C Purpose
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C =======
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C
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C Performing checks on sparse matrix.
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C
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C Parameters
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C ==========
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C
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C TRANS - CHARACTER*1
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C On entry TRANS specifies whether the routine will use
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C matrix P or the transpose of P for the permutation as follows:
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C TRANS = 'N' -> permute with matrix P
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C TRANS = 'T' or 'C' -> permute the transpose of P
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C Unchanged on exit.
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C
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C M - INTEGER
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C On entry: number of rows of matrix A.
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C Unchanged on exit.
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C
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C N - INTEGER
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C On entry: number of columns of matrix A.
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C Unchanged on exit.
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C
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C DESCRA - CHARACTER*5 array of DIMENSION (10)
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C On entry DESCRA defines the format of the input sparse matrix.
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C Unchanged on exit.
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C
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C A - DOUBLE PRECISION array of DIMENSION (*)
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C On entry A specifies the values of the input sparse
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C matrix.
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C Unchanged on exit.
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C
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C IA1 - INTEGER array of dimension (*)
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C On entry IA1 holds integer information on input sparse
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C matrix. Actual information will depend on data format used.
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C Unchanged on exit.
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C
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C IA2 - INTEGER array of dimension (*)
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C On entry IA2 holds integer information on input sparse
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C matrix. Actual information will depend on data format used.
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C Unchanged on exit.
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C
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C WORK - DOUBLE PRECISION array of dimension (LWORK)
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C On entry: work area.
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C On exit INT(WORK(1)) contains the minimum value
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C for LWORK satisfying DSPRP memory requirements.
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C
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C LWORK - INTEGER
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C On entry LWORK specifies the dimension of WORK
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C Unchanged on exit.
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C
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C IERROR - INTEGER
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C On exit specify the error code.
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C IERROR = 0 no errors
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C IERROR > 0 error in integrity check
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SUBROUTINE DCSRCK(TRANS,M,N,DESCRA,A,IA1,IA2,
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+ WORK,LWORK,IERROR)
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use psb_const_mod
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IMPLICIT NONE
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C .. Scalar Arguments ..
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INTEGER LWORK,M, N, IERROR
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CHARACTER TRANS
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C .. Array Arguments ..
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real(psb_dpk_) A(*), WORK(*)
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INTEGER IA1(*), IA2(*)
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CHARACTER DESCRA*11
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C .. Local Scalars ..
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INTEGER I, J, nrow, nind
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C
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C .. Executable Statements ..
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C
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C
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C Check #1: Character descriptor have valid values
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C
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IERROR = 0
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IF ((DESCRA(1:1).NE.'G').AND.(DESCRA(1:1).NE.'S').AND.
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& (DESCRA(1:1).NE.'H').AND.(DESCRA(1:1).NE.'T').AND.
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& (DESCRA(1:1).NE.'A').AND.(DESCRA(1:1).NE.'D')) THEN
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IERROR = 11
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GOTO 9999
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END IF
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IF ((DESCRA(2:2).NE.'U').AND.(DESCRA(2:2).NE.'L')) THEN
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IERROR = 12
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GOTO 9999
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END IF
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IF ((DESCRA(3:3).NE.'U').AND.(DESCRA(3:3).NE.'N')) THEN
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IERROR = 13
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GOTO 9999
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END IF
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C
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C Check #2: Pointers have non decreasing order
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C
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IF (IA2(1).LE.0) THEN
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IERROR = 14
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GOTO 9999
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ENDIF
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NROW = 0
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DO 10 I = 1, M
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IF (IA2(I) .GT. IA2(I+1)) THEN
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NROW = NROW + 1
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END IF
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10 CONTINUE
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IF (NROW .GT. 0) THEN
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IERROR = 15
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GOTO 9999
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END IF
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C
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C Check #3: Indices are within problem dimension
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C
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NIND = 0
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DO 20 I = 1, M
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DO 30 J = IA2(I), IA2(I+1) - 1
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IF ((IA1(J).LT.0) .OR. (IA1(J).GT.N)) THEN
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NIND = NIND + 1
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END IF
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30 CONTINUE
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20 CONTINUE
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IF (NIND .GT. 0) THEN
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IERROR = 16
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GOTO 9999
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END IF
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9999 CONTINUE
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RETURN
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END
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