Dear @jacobwilliams ,

The odepack stuff is great!
I use IntelOneAPI + VS2017 + Windows 10.
I found that when using release mode, it works fine.
But in debug mode, there are some errors caused by some loose part in the original F77 part.
I asked a question here,
https://fortran-lang.discourse.group/t/how-to-solve-the-type-of-the-actual-argument-differs-from-the-type-of-the-dummy-argument-caused-by-assumed-size-array-error-in-some-f77-code/2597

I am just curious, a quick sloppy and very lazy question, LOL, do you have a 'error free' version of odepack which throw no error in compiling? LOL.
By the way, do you use odepack? I usually use DVODE and it seems OK, but I am interested explore more about this legendary odepack.

Thank you very much indeed!

Best regards,
Rong