This bugzilla service is closed. All entries have been migrated to https://gitlab.com/libeigen/eigen

Bug 1404

Summary: Handle += and -= updates in sparse-sparse products
Product: Eigen Reporter: Gael Guennebaud <gael.guennebaud>
Component: SparseAssignee: Nobody <eigen.nobody>
Status: NEW ---    
Severity: Optimization CC: chtz, gael.guennebaud
Priority: Normal    
Version: 3.4 (development)   
Hardware: All   
OS: All   
Whiteboard:
Bug Depends on:    
Bug Blocks: 814    

Description Gael Guennebaud 2017-03-13 16:54:08 UTC
As noticed there:

https://forum.kde.org/viewtopic.php?f=74&t=139239

it should be easy to extend the current sparse-sparse products implementation to natively support operations like:

C += alpha * A * B;
C -= alpha * A * B;

without extra temporaries.
Comment 1 Nobody 2019-12-04 16:52:57 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to gitlab.com's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.com/libeigen/eigen/issues/1404.