NAME

SYNOPSIS

  SUBROUTINE SCSCMM( TRANSA, M, N, K, ALPHA, DESCRA,
 *           VAL, INDX, PNTRB, PNTRE,
 *           B, LDB, BETA, C, LDC, WORK, LWORK )
  INTEGER*4  TRANSA, M, N, K, DESCRA(5),
 *           LDB, LDC, LWORK
  INTEGER*4  INDX(NNZ), PNTRB(K), PNTRE(K)
  REAL*4     ALPHA, BETA
  REAL*4     VAL(NNZ), B(LDB,*), C(LDC,*), WORK(LWORK)
  SUBROUTINE DCSCMM( TRANSA, M, N, K, ALPHA, DESCRA,
 *           VAL, INDX, PNTRB, PNTRE,
 *           B, LDB, BETA, C, LDC, WORK, LWORK)
  INTEGER*4  TRANSA, M, N, K, DESCRA(5),
 *           LDB, LDC, LWORK
  INTEGER*4  INDX(NNZ), PNTRB(K), PNTRE(K)
  REAL*8     ALPHA, BETA
  REAL*8     VAL(NNZ), B(LDB,*), C(LDC,*), WORK(LWORK)
  where NNZ = PNTRE(K)-PNTRB(1)

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
 M             Number of rows in matrix A
 N             Number of columns in matrix C
 K             Number of 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 NNZ containing matrix entries.
 INDX()        integer array of length NNZ containing row indices.
               (row indices MUST be sorted)
 PNTRB()       integer array of length K such that PNTRB(J)-PNTRB(1)+1
               points to location in VAL of the first nonzero element 
               in column J.
 PNTRE()       integer array of length K such that PNTRE(J)-PNTRE(1)
               points to location in VAL of the last nonzero element 
               in column J.
 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(M,N).
 LWORK         length of WORK array

SEE ALSO

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

NOTES/BUGS