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66 lines
1.6 KiB
Fortran
66 lines
1.6 KiB
Fortran
c
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c What if a wrong DESCRA is passed?
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c
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c
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*
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*
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SUBROUTINE ZCOOMM(TRANSA,M,K,N,ALPHA,DESCRA,AR,
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* IA,JA,INFOA,B,LDB,BETA,C,LDC,WORK,LWORK)
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C
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C
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C .. Scalar Arguments ..
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COMPLEX*16 ALPHA, BETA
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INTEGER K, LDB, LDC, M, N, LWORK
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CHARACTER TRANSA
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C .. Array Arguments ..
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COMPLEX*16 AR(*), B(LDB,*), C(LDC,*), WORK(*)
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INTEGER IA(*), JA(*),INFOA(*)
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CHARACTER DESCRA*11
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C .. Local Scalars ..
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INTEGER I, J
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CHARACTER DIAG, TRANS
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C .. External Subroutines ..
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EXTERNAL ZCOOMV
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C .. Executable Statements ..
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C
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C
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C
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IF (DESCRA(1:1).EQ.'G') TRANS = TRANSA
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IF (DESCRA(1:1).EQ.'S' .AND. DESCRA(2:2).EQ.'U') TRANS = 'U'
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IF (DESCRA(1:1).EQ.'S' .AND. DESCRA(2:2).EQ.'L') TRANS = 'L'
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c
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c Does DSRMV manage this case too? <????????????????????????????
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c
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IF (DESCRA(1:1).EQ.'D') THEN
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IF (DESCRA(3:3).EQ.'U') THEN
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DO 40 I = 1, K
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DO 20 J = 1, M
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C(J,I) = BETA*C(J,I) + ALPHA*B(J,I)
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20 CONTINUE
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40 CONTINUE
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ELSE
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DO 80 I = 1, K
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DO 60 J = 1, M
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C(J,I) = BETA*C(J,I) + ALPHA*AR(J)*B(J,I)
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60 CONTINUE
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80 CONTINUE
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END IF
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RETURN
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END IF
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C
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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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C
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C C = A*B OR C=A'*B
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C
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C
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DO 100 I = 1, K
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CALL ZCOOMV(TRANS,DIAG,M,N,ALPHA,AR,IA,JA,INFOA,
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+ B(1,I),BETA,C(1,I),WORK)
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100 CONTINUE
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RETURN
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END
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