SUBROUTINE SCOOMM( TRANSA, M, N, K, ALPHA, DESCRA, * VAL, INDX, JNDX, NNZ, * B, LDB, BETA, C, LDC, WORK, LWORK ) INTEGER*4 TRANSA, M, N, K, DESCRA(5), NNZ * LDB, LDC, LWORK INTEGER*4 INDX(NNZ), JNDX(NNZ) REAL*4 ALPHA, BETA REAL*4 VAL(NNZ), B(LDB,*), C(LDC,*), WORK(LWORK) SUBROUTINE DCOOMM( TRANSA, M, N, K, ALPHA, DESCRA, * VAL, INDX, JNDX, NNZ, * B, LDB, BETA, C, LDC, WORK, LWORK) INTEGER*4 TRANSA, M, N, K, DESCRA(5), NNZ * LDB, LDC, LWORK INTEGER*4 INDX(NNZ), JNDX(NNZ) REAL*8 ALPHA, BETA REAL*8 VAL(NNZ), B(LDB,*), C(LDC,*), WORK(LWORK)
C <- alpha A B + beta C C <- alpha A'B + beta C ( ' indicates matrix transpose)
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. JNDX() integer array of length NNZ containing column indices. NNZ number of non-zero elements in 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(M,N). LWORK length of WORK array
http://math.nist.gov/mcsd/Staff/KRemington/fspblas/