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56 lines
1.6 KiB
Fortran
56 lines
1.6 KiB
Fortran
SUBROUTINE ZCOOSM(TRANST,M,N,UNITD,D,ALPHA,DESCRA,A,IA,JA,INFOA,
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* B,LDB,BETA,C,LDC,WORK,LWORK,IERROR)
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LOGICAL DEBUG
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PARAMETER (DEBUG=.FALSE.)
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COMPLEX*16 ALPHA, BETA
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INTEGER LDB, LDC, LWORK, M, N, IERROR
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CHARACTER UNITD, TRANST
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COMPLEX*16 A(*), B(LDB,*), C(LDC,*), D(*), WORK(*)
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INTEGER IA(*), JA(*), INFOA(*)
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CHARACTER DESCRA*11
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INTEGER I, K
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CHARACTER DIAG, UPLO
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EXTERNAL XERBLA
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IF((ALPHA.NE.1.D0) .OR. (BETA.NE.0.D0))then
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call xerbla('DCSSM ',9)
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RETURN
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ENDIF
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if (debug) write(*,*) 'ZCOOSM ',m
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if (debug) write(*,*) 'ZCOOSM ',m,ierror
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UPLO = '?'
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IF (DESCRA(1:1).EQ.'T' .AND. DESCRA(2:2).EQ.'U') UPLO = 'U'
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IF (DESCRA(1:1).EQ.'T' .AND. DESCRA(2:2).EQ.'L') UPLO = 'L'
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IF (UPLO.EQ.'?') THEN
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CALL XERBLA('ZCSSM ',10)
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RETURN
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END IF
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IF (DESCRA(3:3).EQ.'N') DIAG = 'N'
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IF (DESCRA(3:3).EQ.'U') DIAG = 'U'
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IF(UNITD.EQ.'B') THEN
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CALL XERBLA('ZCSSM ',11)
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RETURN
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ENDIF
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IF (UNITD.EQ.'R') THEN
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DO 40 I = 1, N
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DO 20 K = 1, M
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B(K,I) = B(K,I)*D(K)
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20 CONTINUE
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40 CONTINUE
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END IF
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DO 60 I = 1, N
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CALL ZCOOSV(UPLO,TRANST,DIAG,M,A,IA,JA,INFOA,
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+ B(1,I),C(1,I),IERROR)
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60 CONTINUE
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IF (UNITD.EQ.'L') THEN
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DO 45 I = 1, N
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DO 25 K = 1, M
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C(K,I) = C(K,I)*D(K)
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25 CONTINUE
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45 CONTINUE
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END IF
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RETURN
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END
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