1998-07-11 18:20:30 +00:00
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UMFPACK Version 2.2 is a package for solving systems of sparse linear systems,
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Ax=b, where A is sparse and can be unsymmetric. It is written in ANSI Fortran
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77. There are options for choosing a good pivot order, factorizing a
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subsequent matrix with the same pivot order and nonzero pattern as a
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previously factorized matrix, and solving systems of linear equations with
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the factors (with A, L, or U; or with their transposes in the single/double
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precision versions). Iterative refinement, with sparse backward error
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estimates, can be performed. Single and double precision, complex, and
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complex double precision (complex*16) routines are available. (Note that
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complex*16 is not ANSI Fortran-77, but is a common extension to it).
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1999-12-23 19:32:04 +00:00
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WWW: http://www.cise.ufl.edu/~davis/umfpack.html
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