What do you mean by "not match"? (Specifically.)
Thanks, -- Raul On Wed, Apr 15, 2015 at 11:34 PM, 'Pascal Jasmin' via Programming <[email protected]> wrote: > that helped, > > 128!:3 can do any of the functions here: > > http://en.wikipedia.org/wiki/Polynomial_representations_of_cyclic_redundancy_checks > > > The default x value > > hfd _306674912 > edb88320 > > > and is "reverse crc-32" > > 16b04c11db7 is "normal crc 32" > > This does not seem to match online crc 32 calculators though. > > > ----- Original Message ----- > From: Raul Miller <[email protected]> > To: Programming forum <[email protected]> > Cc: > Sent: Wednesday, April 15, 2015 6:19 PM > Subject: Re: [Jprogramming] 128!:3 > > 128!:3 has width=32 and init=16ffffffff > > Here's the CRC32 checksum (which has poly 0x04c11db7) using 128!:3: > > (#.|.(32#:2)#:016b04c11db7)&(128!:3) > > That said,, I don't see any examples (starting text, ending checksum) > so it would be tedious to determine whether the default 128!:3 > polynomial has an exact equivalence. > > Thanks, > > -- > Raul > > On Wed, Apr 15, 2015 at 5:28 PM, 'Pascal Jasmin' via Programming > <[email protected]> wrote: >> is there a named algorithm equivalence of 128!:3 to one in this list ? >> >> >> http://reveng.sourceforge.net/crc-catalogue/all.htm >> >> I understand its crc32, but there are several. >> >> Also I note that to get the documentation's result I need to take the 2s >> complement >> >> ]&.(2&#. inv) 128!:3 'assiduously avoid any and all asinine alliterations' >> 1439575093 >> >> (j8.02 64 and j6.01 32) >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
