wkitt...@windstream.net wrote:
On 07/24/2016 05:03 AM, Mark Morgan Lloyd wrote:
Have you tried running your test case through a different
implementation? I
use http://www.wolfgang-ehrhardt.de/crchash_en.html
i'm trying to use only what is available in FPC... i will take a look at
others, though...
Bug 23472 on Mantis suggests adding that library as a package or whatever.
[time passes]
ok, i looked at the one you recommended... the biggest plus is that it
had a self-test with a known crc32 for a given string... with that, i
was able to figure out what was going on...
the main thing is that i need the "inverted" crc32... in other words, i
needed the bytes all reversed so that i could visually match what i was
seeing with what i needed... i didn't realize that swap was only
swapping the hi and lo words of the longints... i had to specifically
break that down and do it like this...
Same old :-)
I'm using that library (plus at least one other) in a program to drive
an HP495x protocol analyser, so that it can look at a block of data and
generate "all known" checksums for investigation.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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