Decomposes a real sparse matrix. The routine either forms the LU-decomposition of a permutation of the entire matrix, or, optionally, first permutes the matrix to block lower triangular form and then only decomposes the diagonal blocks. Classes : D2a4 . Solution of systems of linear equations, including matrix inverses, and LU and related factorizations (real nonsymmetric sparse matrices) Type : Fortran subroutine in NAG library (F01 sublibrary). Access : Proprietary. Many implementations available. Precision: Double. Usage : CALL F01BRF (N, NZ, A, LICN, IRN, LIRN, ICN, PIVOT, IKEEP, IW, W, LBLOCK, GROW, ABORT, IDISP, IFAIL) Details : Documentation Example Example-input Example-output Sites : (1) AIX (2) ITL
AIX: IBM RS6000, National Institute of Standards and Technology (NIST), Gaithersburg, MD. Available to NIST staff. Precision: Double. Access available only to NIST staff on internal Unix systems. They may access this package provided the /itl tree is cross-mounted. Link : f77 -o prog prog.f -L/itl/links/generic/lib -lnag Documentation: acroread /itl/apps/naglib-19/docs/NAGdoc/fl/pdf/F01/f01brf_fl19.pdf Example : cat /itl/apps/naglib-19/flib619da/examples/source/f01brfe.f Example-input: cat /itl/apps/naglib-19/flib619da/examples/data/f01brfe.d Example-outpu: cat /itl/apps/naglib-19/flib619da/examples/results/f01brfe.r
ITL: Unix Workstation Network, National Institute of Standards and Technology (NIST), Gaithersburg, MD. Available to NIST staff. Precision: Double. Access available only to NIST staff on internal Unix systems. They may access this package provided the /itl tree is cross-mounted. Link : f77 -o prog prog.f {-lcomplib.sgimath} -L/itl/links/generic/{lib lib32 lib64}{/mips3 /mips4} -lnag Documentation: acroread /itl/apps/naglib-19/flib619da/NAGdoc/fl/pdf/F01/f01brf_fl19.pdf Example : cat /itl/apps/naglib-19/flib619da/examples/source/f01brfe.f Example-input: cat /itl/apps/naglib-19/flib619da/examples/data/f01brfe.d Example-outpu: cat /itl/apps/naglib-19/flib619da/examples/results/f01brfe.r
GAMS is a service of the Mathematical and Computational Sciences Division of the Information Technology Laboratory of the National Institute of Standards and Technology
This page was generated on Wed Sep 17, 2008 at 15:37:39 UTC