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Groups > comp.lang.python > #75499
| Date | 2014-08-01 21:47 +0100 |
|---|---|
| From | MRAB <python@mrabarnett.plus.com> |
| Subject | Re: Creating a 2s compliment hex string for negitive numbers |
| References | <17160115-a77f-436a-837c-cd2039a7c53f@googlegroups.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.12523.1406926051.18130.python-list@python.org> (permalink) |
On 2014-08-01 21:35, bSneddon wrote: > I need to calculate an error correction code for an old protocol. > > I calculate the integer 4617 and want to code the 2s compliment in ASCII > hex EDF7. When issue the following. >>>> hex(-4617) > '-0x1209' > > Does anyone know a clean way to get to the desired results? My ECC will always > be 16 bit (4 nibble) hex number. > Use a bitwise AND: >>> hex(-4617 & 0xFFFF) '0xedf7'
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Creating a 2s compliment hex string for negitive numbers bSneddon <w.g.sneddon@gmail.com> - 2014-08-01 13:35 -0700
Re: Creating a 2s compliment hex string for negitive numbers MRAB <python@mrabarnett.plus.com> - 2014-08-01 21:47 +0100
Re: Creating a 2s compliment hex string for negitive numbers bSneddon <w.g.sneddon@gmail.com> - 2014-08-01 14:25 -0700
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