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psblas3/base/serial/coo/zcoomm.f

66 lines
1.6 KiB
FortranFixed

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