Variable block row format triangular solve | SVBRSM/DVBRSM/CVBRSM/ZVBRSM | |
| SUBROUTINE | ZVBRSM |
| INTEGER*8 | transa, mb, n, unitd, blda, ldb, ldc, lwork |
| INTEGER*8 | descra(*), indx(*), bindx(*), rpntr(*), cpntr(*), |
|
| bpntrb(*), bpntre(*) |
| COMPLEX*16 | alpha, beta |
| COMPLEX*16 | val(*), b(ldb,*), c(ldc,*), work(*) |
| CALL ZVBRSM (transa, mb, n, unitd, dv, alpha, descra, val, indx, bindx, | |
| rpntr, cpntr, bpntrb, bpntre, b, ldb, beta, c, ldc, work, lwork) | |
Input | transa | Indicates how to operate with the sparse matrix. |
|
| 0: Operate with matrix |
|
| 1: Operate with transpose matrix |
|
| 2: Operate with |
| mb | Number of block rows in matrix A. |
| n | Number of columns in matrix C. |
| unitd | Type of scaling. |
|
| 1. Identity matrix (argument dv( ) is ignored) |
|
| 2. Scale on left (row scaling) |
|
| 3. Scale on right (column scaling) |
| dv( ) | Diagonal scaling array of length lb*lb*mb. |
| alpha | Scalar parameter. |
| descra( ) |
|
|
| Descriptor argument. Five element integer array. |
| descra(1) | Matrix structure. |
|
| 0: General |
|
| 1: Symmetric |
|
| 2: Hermitian |
|
| 3: Triangular |
|
| 4: Skew |
|
| 5: Diagonal |
| descra(2) | Upper/Lower triangular indicator. |
|
| 1: Lower |
|
| 2: Upper |
Chapter 4 Sparse BLAS Operations 535