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+LDL is a set of concise routines for factorizing symmetric
+positive-definite sparse matrices, with some applicability to symmetric
+indefinite matrices. Its primary purpose is to illustrate much of the
+basic theory of sparse matrix algorithms in as concise a code as possible,
+including an elegant new method of sparse symmetric factorization that
+computes the factorization row-by-row but stores it column-by-column.
+
+This package is part of SuiteSparse.
+
+AMD is an optional dependency and will be used if found.
+It is primarily used for this package's test suite.