NAME

SYNOPSIS

  SUBROUTINE SBDIMM( TRANSA, MB, N, KB, ALPHA, DESCRA,
 *           VAL, BLDA, IBDIAG, NBDIAG, LB,
 *           B, LDB, BETA, C, LDC, WORK, LWORK )
  INTEGER*4  TRANSA, MB, N, KB, DESCRA(5), BLDA, NBDIAG, LB,
 *           LDB, LDC, LWORK
  INTEGER*4  IBDIAG(NBDIAG)
  REAL*4     ALPHA, BETA
  REAL*4     VAL(LB*LB*BLDA*NBDIAG), B(LDB,*), C(LDC,*), WORK(LWORK)
  SUBROUTINE DBDIMM( TRANSA, MB, N, KB, ALPHA, DESCRA,
 *           VAL, BLDA, IBDIAG, NBDIAG, LB,
 *           B, LDB, BETA, C, LDC, WORK, LWORK)
  INTEGER*4  TRANSA, MB, N, KB, DESCRA(5), BLDA, NBDIAG, LB,
 *           LDB, LDC, LWORK
  INTEGER*4  IBDIAG(NBDIAG)
  REAL*8     ALPHA, BETA
  REAL*8     VAL(LB*LB*BLDA*NBDIAG), B(LDB,*), C(LDC,*), WORK(LWORK)

DESCRIPTION

 C <- alpha A B + beta C
 C <- alpha A'B + beta C
                                    ( ' indicates matrix transpose)

ARGUMENTS

 TRANSA        Indicates how to operate with the sparse matrix
                 0 : operate with matrix
                 1 : operate with transpose matrix
 MB            Number of block rows in matrix A
 N             Number of columns in matrix C
 KB            Number of block columns in matrix A
 ALPHA         Scalar parameter
 DESCRA()      Descriptor argument.  Five element integer array
               DESCRA(1) matrix structure
                 0 : general
                 1 : symmetric
                 2 : Hermitian
                 3 : Triangular
                 4 : Skew(Anti)-Symmetric
                 5 : Diagonal
               DESCRA(2) upper/lower triangular indicator (NOT IMPLEMENTED)
                 1 : lower
                 2 : upper
               DESCRA(3) main diagonal type (NOT IMPLEMENTED)
                 0 : non-unit
                 1 : unit
               DESCRA(4) Array base  (NOT IMPLEMENTED)
                 0 : C/C++ compatible
                 1 : Fortran compatible
               DESCRA(5) repeated indices? (NOT IMPLEMENTED)
                 0 : unknown
                 1 : no repeated indices
 VAL()         scalar array of length LB*LB*BLDA*NBDIAG containing 
               matrix entries, stored column-major within each dense 
               block.
 BLDA          leading block dimension of VAL().
 IBDIAG()      integer array of length NBDIAG consisting of the
               corresponding indices of the non-zero block
               diagonals of A in VAL().
 NBDIAG        the number of non-zero block diagonals in A.
 LB            dimension of dense blocks composing A.
 B()           rectangular array with first dimension LDB.
 LDB           leading dimension of B
 BETA          Scalar parameter
 C()           rectangular array with first dimension LDC.
 LDC           leading dimension of C
 WORK()        scratch array of length LWORK.  LWORK should be at least
               MAX(MB*LB*LB,N).
 LWORK         length of WORK array

SEE ALSO

http://math.nist.gov/mcsd/Staff/KRemington/fspblas/

NOTES/BUGS