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evd: nonsymmetric EVD fixes — ?GEEV input scaling, AED sort termination, ?LALN2 2x2 solves (#112, #144, #145) - #154

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fix/nonsymmetric-evd

Oct 29, 2026

Merged

evd: nonsymmetric EVD fixes — ?GEEV input scaling, AED sort termination, ?LALN2 2x2 solves (#112, #144, #145)#154
shinaoka merged 6 commits into
mainfrom
fix/nonsymmetric-evd

Commits on Oct 29, 2026
- evd: scale the input into range as ?GEEV does (#112)
  
  shinaoka
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  claude
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  3c72e43
- upstream-reports, PATCHSET: the EVD input scaling (#112)
  
  shinaoka
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  claude
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  798e81e
- evd: pick the input scale from the largest |re| or |im| (#112 post-review)
  
  shinaoka
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  claude
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  6ac62a1
- evd: the real Schur deflation-window sort always ends (#144)
  
  shinaoka
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  claude
  committed
  424fa12
- evd: the 2 x 2 block solves of the real eigenvector back substitution follow ?LALN2 (#145)
  
  shinaoka
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  claude
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  f614ccb
- PATCHSET: the nonsymmetric EVD fixes land together (#112, #144, #145)
  
  shinaoka
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  claude
  committed
  3ea3887