List Commands Library for 50g

[DavidM]

The final version (1.1.2) of the ListExt library has now been posted to the General Software Library!

I was able to complete testing on a 49g successfully, which found no problems with the library on that platform. Interestingly I did run across a bug in the 1.19-6 ROM, though, specifically pertaining to the result of an exact integer list being multiplied by an exact integer constant -- which mysteriously gets converted to a real result. This is probably documented somewhere, though I don't recall seeing it. You can see this simply by executing "{ 2 } 3 *" on a 49g set to Exact mode with this ROM version. The result is a real { 6. } instead of integer { 6 } as it is on later ROM versions. The bug doesn't happen if you reverse the order of the arguments, so it's probably specific to the dispatch code handling in that ROM release.

In case anyone still tries to run TESTALL (if you still have the release candidate), there was a problem with it that occurs if you have the fraction mark set to comma (I know, I should have realized that one in advance). It will report failures of at least 8 tests in that scenario. The problem wasn't with the library, it was with TESTALL. I fixed the bug, but that command was removed from the final version so the fix will only apply to any future release.

Other than cosmetic changes to the About text (and removing TESTALL), the only change since the release candidate was a performance enhancement for LSEQ and LSEQR. The results of those commands are now built from scratch without using any of the built-in math functions, which cuts out the "middle man" in the main loop. As a result, they are quite zippy. Because there's more data to move with reals than there is with integers, real results are actually a bit slower than integers now. But you won't be waiting much on those commands to finish. 15000 LSEQ now completes in 1.93s (approximate mode) and 1.56s (exact mode). More down-to-earth list sequences finish much faster, of course.

Thanks again to everyone who participated with this project!