[eigen-commits] commit/eigen: Adolfo Rodriguez Tsouroukdissian : - Added problem size constructor to decompositions that did not have one. It preallocates member data structures.

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1 new changeset in eigen:

http://www.bitbucket.org/eigen/eigen/changeset/d54c08afda3e/
changeset:   r2759:d54c08afda3e
user:        Adolfo Rodriguez Tsouroukdissian 
date:        2010-04-21 17:15:57
summary:     - Added problem size constructor to decompositions that did not have one. It preallocates member data structures.
- Updated unit tests to check above constructor.
- In the compute() method of decompositions: Made temporary matrices/vectors class members to avoid heap allocations during compute() (when dynamic matrices are used, of course).

These  changes can speed up decomposition computation time when a solver instance is used to solve multiple same-sized problems. An added benefit is that the compute() method can now be invoked in contexts were heap allocations are forbidden, such as in real-time control loops.

CAVEAT: Not all of the decompositions in the Eigenvalues module have a heap-allocation-free compute() method. A future patch may address this issue, but some required API changes need to be incorporated first.
affected #:  29 files (9.3 KB)

Repository URL: http://bitbucket.org/eigen/eigen/

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