I found a bug in new functions for CS decomposition from LAPACK 3.5.0 (functions cuncsd2by1, dorcsd1by1, sorcsd2by1, zuncsd2by1)
Reproducer for bug is attached. It tests orthogonality of a matrix U2 after call of function dorcsd2by1.
The bug is caused by overwriting of work array. Proposed fix is attached as diff file.
Bug in csd2by1 functions
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Bug in csd2by1 functions
by chereshnev » Tue Oct 14, 2014 5:45 am
- Attachments
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csd2by1_fix_diff.txt- (4.21 KiB) Downloaded 424 times
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- dorcsd2by1_bug.cpp
- (2.67 KiB) Downloaded 445 times
- chereshnev
- Posts: 14
- Joined: Thu Oct 09, 2014 6:17 am
- Location: Intel Corp., Russia, Novosibirsk
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