langou

Results 134 comments of langou

Calling ?GEEV with non-finite input leads to memory corruption in ?LASCAL

I am reopening this issue because, I think we should, in addition, also work on the suggestion of @angsch As opposed to DISFINITE, I would have used `DISNAN` and let...

Poor accuracy of dgecon

Hi @maxaehle, Thanks for reporting this. How bad can the condition number estimator be? See Sheung Hun Cheng and Nick Higham [0]: "The price to pay for using an estimate...

Tik multi lam

Maybe tomorrow, you work on doing an example for multiple lambda with SVD.

Provide intent attributes for arguments

I agree.

IEEECK generates IEEE exceptions

I agree.

Provide explicit interfaces for external functions passed as arguments

I agree. It would be most useful if someone can provide an example demonstrating how they would do this in a clean way. Maybe through a PR. The passing of...

Update Function Arguments in `?gees`, `?geesx`, `?gges`, `?ggesx`, and `?gges3`

I added one for .github/workflows/cmake.yml (seems like other 'ctest' had it.) Let me know if you want it at other places. Note: I'll need a "maintainer" to approve my PR...

hppa: Segmentation fault in c_sblat3 test

Hi @danglin44, can you send the lines of codes using "permalink" features of GitHub. Something like https://github.com/Reference-LAPACK/lapack/blob/bfbef596de9c445075b809f127e85c379884e209/BLAS/TESTING/sblat3.f#L344-L347 I cannot identify the lines of codes you are pointing you. Cheers, @langou

hppa: Segmentation fault in c_sblat3 test

Found it! https://github.com/Reference-LAPACK/lapack/blob/bfbef596de9c445075b809f127e85c379884e209/CBLAS/testing/c_sblat3.f#L365-L369 This was in CBLAS not BLAS, my bad.

Worse convergence for `block_minres` than `minres`

Thanks for thinking about me. I am not an expert of Block Lanczos. I know more Block Arnoldi indeed. This looks like an interesting problem. I'll try to have a...