Haymo Kutschbach

Thank you! This is very helpful. We had tried to recover from underflow using CABS1. But our attempt was not going far enough. Your suggestion seems to do much better....

Given my limited experience with the project I would appreciate your effort and the chance to take your PR as a guideline for pot. future PRs from us... (if that's...

@weslleyspereira Awesome! I am still checking, if this applies to CLAHQR the same. Will post my result ASAP (tomorrow)

Hello @langou ! > Bold statement: If all computations are done using IEEE 64-bit arithmetic, then LAPACK should work. Nice! I suppose, by 'work' we mean: when fed with data...

One outcome of #577 is that LAPACK relies on the FORTRAN compiler to implement reasonably robust (under- / overflow) complex division and ABS(). I wonder if we should start maintaining...

@weslleyspereira I haven't even tried GCC. All I have access to / a running setup for is ifort on Windows. It would take some days for me to get GCC...

thanks for the follow-up! It is on my TODO list. Will try & report ASAP (likely after Aug-21).

> thanks for the follow-up! It is on my TODO list. Will try & report ASAP (likely after Aug-21). @weslleyspereira thanks for your patience. I tried to get back to...

-mno-80387 is not available on Windows. With the flag /Qcomplex-limited-range my Release/x64 build looks good for non-complex types, as expected: ```` tests 1... 53 pass: * xblat[1|2|3][s|d|c|z] - all pass...

Great! A very helpful test, @weslleyspereira ! I just ran the zdiv and zabs tests on my Windows machine, using ifort 2021, Release mode, x64, with varying flags: /Od vers....