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Groups > comp.lang.java.programmer > #30156
| From | ĵess stone <j3ss.st0n3@gmail.com> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Bytes [Was: Re: Driving 7-Segment LEDs on Raspberry Pi] |
| Date | 2014-10-22 14:00 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <m28d9b$11d$1@speranza.aioe.org> (permalink) |
| References | (2 earlier) <ccc4a51a-31ee-4099-9c63-0cc2a76c6dbc@googlegroups.com> <m258kt$7t0$1@speranza.aioe.org> <m25kdv$tou$1@dont-email.me> <m27jk3$shk$1@speranza.aioe.org> <m289av$gdo$1@dont-email.me> |
In article m289av$gdo$1@dont-email.me, Eric Sosman said... >> The problem is mainly the interaction with that and the signedness of >> bytes. So you end up with binary 11001001 turning into >> 10000000000000000000000001001001 > > [calls me a liar] No! None of the nasty things that you have said or implied about me are at all true. >> and when you later truncate or mask off the high bytes you wind up with >> 01001001, which is wrong. > > [calls me a liar] No! None of the nasty things that you have said or implied about me are at all true. >> So you have to >> watch that you don't lose the high bit when something causes auto- >> promotion. And it's tricky, because it can happen even if you have a >> computation "entirely in bytes", i.e. nothing but bytes in and >> assignment to a parameter or local of byte size. > > [calls me a liar] No! None of the nasty things that you have said or implied about me are at all true. > Ultimately, the need for promotion arises from the inability of > most computers nowadays to do arithmetic on narrow integers. Nope. > [irrelevant stuff about the hardware implementation deleted] That has nothing to do with how a HLL's type system works, and you know it.
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Driving 7-Segment LEDs on Raspberry Pi javalaurence@gmail.com - 2014-10-20 01:28 -0700
Re: Driving 7-Segment LEDs on Raspberry Pi Gordon Levi <gordon@address.invalid> - 2014-10-21 01:42 +1100
Re: Driving 7-Segment LEDs on Raspberry Pi javalaurence@gmail.com - 2014-10-24 05:20 -0700
Re: Driving 7-Segment LEDs on Raspberry Pi Arne Vajhøj <arne@vajhoej.dk> - 2014-10-24 21:37 -0400
Re: Driving 7-Segment LEDs on Raspberry Pi ĵess stone <j3ss.st0n3@gmail.com> - 2014-10-20 17:16 +0000
Re: Driving 7-Segment LEDs on Raspberry Pi javalaurence@gmail.com - 2014-10-21 00:09 -0700
Re: Driving 7-Segment LEDs on Raspberry Pi ĵess stone <j3ss.st0n3@gmail.com> - 2014-10-21 09:22 +0000
Bytes [Was: Re: Driving 7-Segment LEDs on Raspberry Pi] Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-10-21 08:43 -0400
Re: Bytes [Was: Re: Driving 7-Segment LEDs on Raspberry Pi] ĵess stone <j3ss.st0n3@gmail.com> - 2014-10-22 06:42 +0000
Re: Bytes [Was: Re: Driving 7-Segment LEDs on Raspberry Pi] Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-10-22 08:02 +0000
Re: Bytes [Was: Re: Driving 7-Segment LEDs on Raspberry Pi] ĵess stone <j3ss.st0n3@gmail.com> - 2014-10-22 10:49 +0000
Re: Bytes [Was: Re: Driving 7-Segment LEDs on Raspberry Pi] Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-10-22 08:52 -0400
Re: Bytes [Was: Re: Driving 7-Segment LEDs on Raspberry Pi] ĵess stone <j3ss.st0n3@gmail.com> - 2014-10-22 14:00 +0000
Re: Bytes [Was: Re: Driving 7-Segment LEDs on Raspberry Pi] Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-10-22 10:43 -0400
Re: Bytes [Was: Re: Driving 7-Segment LEDs on Raspberry Pi] thinbluernime <thinbluernime3@gmail.com> - 2014-10-22 16:34 +0000
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