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Bug 284 - Sparse * Sparse without removing numerical zeros
Summary: Sparse * Sparse without removing numerical zeros
Status: RESOLVED FIXED
Alias: None
Product: Eigen
Classification: Unclassified
Component: Sparse (show other bugs)
Version: 3.0
Hardware: All All
: --- enhancement
Assignee: Nobody
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-06-03 12:21 UTC by Christoph Hertzberg
Modified: 2019-12-04 10:49 UTC (History)
1 user (show)


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Description Christoph Hertzberg 2011-06-03 12:21:22 UTC 
When building a Sparse*Sparse product which is later decomposed it can be advantageous not to prune numerical zeros, so that the symbolical decomposition can be reused.

Moreover it might be possible to 'recompute' a Sparse*Sparse product where the structure did not change thus no overhead for reallocation would arise.
Comment 1 Gael Guennebaud 2011-12-03 17:52:13 UTC 
The first wish is fixed by change f4c8f74154f9.

I'll add a new entry for the second wish.
Comment 2 Nobody 2019-12-04 10:49:37 UTC 
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