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212 lines
7.6 KiB
Fortran
212 lines
7.6 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 SUBROUTINE DSWMM(TRANS,M,N,K,ALPHA,FIDA,DESCRA,A,IA1,IA2,
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C INFOA,B,LDB,BETA,C,LDC,WORK,LWORK,IERROR)
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C Purpose
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C =======
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C
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C Computing C <-- ALPHA A B + BETA C or
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C C <-- ALPHA At B + BETA C
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C Called by DCSMM
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C Actual computing performed by sparse Toolkit kernels.
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C This routine selects the proper kernel for each
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C data structure.
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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 if the routine operates with matrix A
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C or with the transpose of A as follows:
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C TRANS = 'N' -> use matrix A
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C TRANS = 'T' or 'C' -> use A' (transpose of matrix A)
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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 (A') and
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C number of rows of matrix C
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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 B
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C and number of columns of matrix C.
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C Unchanged on exit.
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C
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C K - INTEGER
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C On entry: number of columns of matrix A (A') and
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C number of rows of matrix B
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C Unchanged on exit.
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C
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C ALPHA - DOUBLE PRECISION
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C On entry: multiplicative constant.
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C Unchanged on exit.
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C
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C FIDA - CHARACTER*5
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C On entry FIDA 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 DESCRA - CHARACTER*1 array of DIMENSION (9)
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C On entry DESCRA describes the characteristics of the input
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C 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 INFOA - INTEGER array of length 10.
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C On entry can hold auxiliary information on input matrices
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C formats or environment of subsequent calls.
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C Might be changed on exit.
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C
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C B - DOUBLE PRECISION matrix of dimension (LDB,*)
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C On entry: dense matrix.
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C Unchanged on exit.
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C
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C LDB - INTEGER
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C On entry: leading dimension of B
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C Unchanged on exit.
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C
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C BETA - DOUBLE PRECISION
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C On entry: multiplicative constant.
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C Unchanged on exit.
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C
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C C - DOUBLE PRECISION matrix of dimension (LDC,*)
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C On entry: dense matrix.
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C On exit is updated with the matrix-matrix product.
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C
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C LDC - INTEGER
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C On entry: leading dimension of C
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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 DSWMM 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 IERROR contains the value of error flag as follows:
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C IERROR = 0 no error
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C IERROR > 0 warning
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C IERROR < 0 fatal error
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C
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C Note
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C ====
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C All checks on argument are performed in the calling routine.
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C
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C
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SUBROUTINE DSWMM(TRANS,M,N,K,ALPHA,FIDA,DESCRA,A,IA1,IA2, &
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& INFOA,B,LDB,BETA,C,LDC,WORK,LWORK,IERROR)
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use psb_const_mod
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C .. Scalar Arguments ..
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INTEGER M,N,K,LDB,LDC,LWORK,IERROR
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CHARACTER TRANS
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real(psb_dpk_) ALPHA,BETA
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C .. Array Arguments ..
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INTEGER IA1(*),IA2(*),INFOA(*), INT_VAL(5)
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CHARACTER DESCRA*11, FIDA*5
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real(psb_dpk_) A(*),B(LDB,*),C(LDC,*),WORK(*)
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C .. External Subroutines ..
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EXTERNAL DCSRMM
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CHARACTER*20 NAME
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C .. Executable Statements ..
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C
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NAME = 'DSWMM\0'
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IERROR = 0
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CALL FCPSB_ERRACTIONSAVE(ERR_ACT)
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C Switching on FIDA: proper sparse BLAS routine is selected
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C according to data structure
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C
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IF (FIDA(1:3).EQ.'CSR') THEN
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C
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C A, IA1, IA2 ---> AR, JA, IA
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C VAL, INDX, PNTR
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C INFOA(*) not used
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CALL DCSRMM(TRANS,M,N,K,ALPHA,DESCRA,A,IA1,
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+ IA2,B,LDB,BETA,C,LDC,WORK,LWORK,IERROR)
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ELSE IF (FIDA(1:3).EQ.'JAD') THEN
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C
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C INFOA(*) not used
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C
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CALL DJADMM(TRANS,M,N,K,ALPHA,DESCRA,A,IA1,
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+ IA2,B,LDB,BETA,C,LDC,WORK,IERROR)
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ELSE IF (FIDA(1:3).EQ.'COO') THEN
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C
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C
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CALL DCOOMM(TRANS,M,N,K,ALPHA,DESCRA,A,IA1,
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+ IA2,INFOA,B,LDB,BETA,C,LDC,WORK,LWORK,IERROR)
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ELSE
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C
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C This data structure not yet considered
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C
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IERROR = 3010
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CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
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GOTO 9999
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END IF
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CALL FCPSB_ERRACTIONRESTORE(ERR_ACT)
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RETURN
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9999 CONTINUE
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CALL FCPSB_ERRACTIONRESTORE(ERR_ACT)
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IF ( ERR_ACT .NE. 0 ) THEN
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CALL FCPSB_SERROR()
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RETURN
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ENDIF
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RETURN
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END
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