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IT NewsUsing Integer Addition to Approximate Float Multiplication - Once the domain of esoteric scientific and business computing, floating point calc... - <a href="https://hackaday.com/2025/04/10/using-integer-addition-to-approximate-float-multiplication/" rel="nofollow noopener" translate="no" target="_blank">https://hackaday.com/2025/04/10/using-integer-addition-to-approximate-float-multiplication/</a> <a href="https://schleuss.online/tags/softwaredevelopment" class="mention hashtag" rel="nofollow noopener" target="_blank">#softwaredevelopment</a> <a href="https://schleuss.online/tags/softwarehacks" class="mention hashtag" rel="nofollow noopener" target="_blank">#softwarehacks</a> <a href="https://schleuss.online/tags/floatingpoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#floatingpoint</a> <a href="https://schleuss.online/tags/fpu" class="mention hashtag" rel="nofollow noopener" target="_blank">#fpu</a> <a href="https://schleuss.online/tags/gpu" class="mention hashtag" rel="nofollow noopener" target="_blank">#gpu</a>

IT NewsThe Pentium Processor’s Innovative (and Complicated) Method of Multiplying by Three, Fast - [Ken Shirriff] has been sharing a really low-level look at Intel’s Pentium (1993) ... - <a href="https://hackaday.com/2025/03/08/the-pentium-processors-innovative-and-complicated-method-of-multiplying-by-three-fast/" rel="nofollow noopener" translate="no" target="_blank">https://hackaday.com/2025/03/08/the-pentium-processors-innovative-and-complicated-method-of-multiplying-by-three-fast/</a> <a href="https://schleuss.online/tags/reverseengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#reverseengineering</a> <a href="https://schleuss.online/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener" target="_blank">#retrocomputing</a> <a href="https://schleuss.online/tags/pentium" class="mention hashtag" rel="nofollow noopener" target="_blank">#pentium</a> <a href="https://schleuss.online/tags/radix" class="mention hashtag" rel="nofollow noopener" target="_blank">#radix</a>-8 <a href="https://schleuss.online/tags/fpu" class="mention hashtag" rel="nofollow noopener" target="_blank">#fpu</a>

Pyrzout :vm:The Pentium Processor’s Innovative (and Complicated) Method of Multiplying by Three, Fast <a href="https://hackaday.com/2025/03/08/the-pentium-processors-innovative-and-complicated-method-of-multiplying-by-three-fast/" rel="nofollow noopener" translate="no" target="_blank">https://hackaday.com/2025/03/08/the-pentium-processors-innovative-and-complicated-method-of-multiplying-by-three-fast/</a> <a href="https://social.skynetcloud.site/tags/ReverseEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#ReverseEngineering</a> <a href="https://social.skynetcloud.site/tags/Retrocomputing" class="mention hashtag" rel="nofollow noopener" target="_blank">#Retrocomputing</a> <a href="https://social.skynetcloud.site/tags/pentium" class="mention hashtag" rel="nofollow noopener" target="_blank">#pentium</a> <a href="https://social.skynetcloud.site/tags/radix" class="mention hashtag" rel="nofollow noopener" target="_blank">#radix</a>-8 <a href="https://social.skynetcloud.site/tags/FPU" class="mention hashtag" rel="nofollow noopener" target="_blank">#FPU</a>

Gea-Suan LinIntel 當年的 Pentium FDIV bug 居然還有新的發現...三十年前的 Pentium FDIV bug 居然還有新的發現冒出來：「Intel's $475 million error: the silicon behind the Pentium division bug」。先快速複習<a href="https://blog.gslin.org/archives/2025/01/03/12177/intel-%e7%95%b6%e5%b9%b4%e7%9a%84-pentium-fdiv-bug-%e5%b1%85%e7%84%b6%e9%82%84%e6%9c%89%e6%96%b0%e7%9a%84%e7%99%bc%e7%8f%be/" rel="nofollow noopener" translate="no" target="_blank">https://blog.gslin.org/archives/2025/01/03/12177/intel-%e7%95%b6%e5%b9%b4%e7%9a%84-pentium-fdiv-bug-%e5%b1%85%e7%84%b6%e9%82%84%e6%9c%89%e6%96%b0%e7%9a%84%e7%99%bc%e7%8f%be/</a><a href="https://abpe.org/tags/Computer" class="mention hashtag" rel="nofollow noopener" target="_blank">#Computer</a> <a href="https://abpe.org/tags/Hardware" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hardware</a> <a href="https://abpe.org/tags/Murmuring" class="mention hashtag" rel="nofollow noopener" target="_blank">#Murmuring</a> <a href="https://abpe.org/tags/Programming" class="mention hashtag" rel="nofollow noopener" target="_blank">#Programming</a> <a href="https://abpe.org/tags/bug" class="mention hashtag" rel="nofollow noopener" target="_blank">#bug</a> <a href="https://abpe.org/tags/cpu" class="mention hashtag" rel="nofollow noopener" target="_blank">#cpu</a> <a href="https://abpe.org/tags/engineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#engineering</a> <a href="https://abpe.org/tags/fdiv" class="mention hashtag" rel="nofollow noopener" target="_blank">#fdiv</a> <a href="https://abpe.org/tags/fpu" class="mention hashtag" rel="nofollow noopener" target="_blank">#fpu</a> <a href="https://abpe.org/tags/hardware" class="mention hashtag" rel="nofollow noopener" target="_blank">#hardware</a> <a href="https://abpe.org/tags/intel" class="mention hashtag" rel="nofollow noopener" target="_blank">#intel</a> <a href="https://abpe.org/tags/lookup" class="mention hashtag" rel="nofollow noopener" target="_blank">#lookup</a> <a href="https://abpe.org/tags/pentium" class="mention hashtag" rel="nofollow noopener" target="_blank">#pentium</a> <a href="https://abpe.org/tags/pla" class="mention hashtag" rel="nofollow noopener" target="_blank">#pla</a> <a href="https://abpe.org/tags/reverse" class="mention hashtag" rel="nofollow noopener" target="_blank">#reverse</a> <a href="https://abpe.org/tags/table" class="mention hashtag" rel="nofollow noopener" target="_blank">#table</a>

dorotaCIrregular reminder: floating point calculations are not exact.Take your program to a different <a href="https://fosstodon.org/tags/hardware" class="mention hashtag" rel="nofollow noopener" target="_blank">#hardware</a> and your tests may start failing:<a href="https://codeberg.org/libobscura/libobscura/src/branch/master/crates/conv/tests/convtest.rs#L40" rel="nofollow noopener" translate="no" target="_blank">https://codeberg.org/libobscura/libobscura/src/branch/master/crates/conv/tests/convtest.rs#L40</a><a href="https://codeberg.org/libobscura/libobscura/actions/runs/30#jobstep-7-431" rel="nofollow noopener" translate="no" target="_blank">https://codeberg.org/libobscura/libobscura/actions/runs/30#jobstep-7-431</a><a href="https://fosstodon.org/tags/fpu" class="mention hashtag" rel="nofollow noopener" target="_blank">#fpu</a> <a href="https://fosstodon.org/tags/float" class="mention hashtag" rel="nofollow noopener" target="_blank">#float</a> <a href="https://fosstodon.org/tags/floatingpoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#floatingpoint</a> <a href="https://fosstodon.org/tags/precision" class="mention hashtag" rel="nofollow noopener" target="_blank">#precision</a> <a href="https://fosstodon.org/tags/libobscura" class="mention hashtag" rel="nofollow noopener" target="_blank">#libobscura</a>

Vingt Trois Seize 💎<a href="https://mastodon.world/tags/commodore" class="mention hashtag" rel="nofollow noopener" target="_blank">#commodore</a> <a href="https://mastodon.world/tags/CBM" class="mention hashtag" rel="nofollow noopener" target="_blank">#CBM</a> <a href="https://mastodon.world/tags/AMIGA" class="mention hashtag" rel="nofollow noopener" target="_blank">#AMIGA</a> <a href="https://mastodon.world/tags/AcceleratorCard" class="mention hashtag" rel="nofollow noopener" target="_blank">#AcceleratorCard</a> <a href="https://mastodon.world/tags/Motorola" class="mention hashtag" rel="nofollow noopener" target="_blank">#Motorola</a> <a href="https://mastodon.world/tags/MC68030" class="mention hashtag" rel="nofollow noopener" target="_blank">#MC68030</a> <a href="https://mastodon.world/tags/FPU" class="mention hashtag" rel="nofollow noopener" target="_blank">#FPU</a> <a href="https://mastodon.world/tags/CoPro" class="mention hashtag" rel="nofollow noopener" target="_blank">#CoPro</a> <a href="https://mastodon.world/tags/MC68882" class="mention hashtag" rel="nofollow noopener" target="_blank">#MC68882</a> <a href="https://mastodon.world/tags/FastRam" class="mention hashtag" rel="nofollow noopener" target="_blank">#FastRam</a> <a href="https://mastodon.world/tags/SCSI" class="mention hashtag" rel="nofollow noopener" target="_blank">#SCSI</a> <a href="https://mastodon.world/tags/retrocomputer" class="mention hashtag" rel="nofollow noopener" target="_blank">#retrocomputer</a> <a href="https://mastodon.world/tags/retrogaming" class="mention hashtag" rel="nofollow noopener" target="_blank">#retrogaming</a> <a href="https://mastodon.world/tags/videogames" class="mention hashtag" rel="nofollow noopener" target="_blank">#videogames</a> <a href="https://mastodon.world/tags/80s" class="mention hashtag" rel="nofollow noopener" target="_blank">#80s</a> <a href="https://mastodon.world/tags/90s" class="mention hashtag" rel="nofollow noopener" target="_blank">#90s</a> <a href="https://mastodon.world/tags/geek" class="mention hashtag" rel="nofollow noopener" target="_blank">#geek</a>

Anja Reul 📯<a href="https://mastodon.social/tags/CIJI" class="mention hashtag" rel="nofollow noopener" target="_blank">#CIJI</a>: <a href="https://mastodon.social/tags/FPU" class="mention hashtag" rel="nofollow noopener" target="_blank">#FPU</a> ruft zur Einreichung von Anträgen für die <a href="https://mastodon.social/tags/Finanzierung" class="mention hashtag" rel="nofollow noopener" target="_blank">#Finanzierung</a> von grenzüberschreitenden, gemeinschaftlichen <a href="https://mastodon.social/tags/Recherchen" class="mention hashtag" rel="nofollow noopener" target="_blank">#Recherchen</a> auf. 10 <a href="https://mastodon.social/tags/Zusch%C3%BCsse" class="mention hashtag" rel="nofollow noopener" target="_blank">#Zuschüsse</a> i.H.v. je 10.000 EUR werden an <a href="https://mastodon.social/tags/Journalisten" class="mention hashtag" rel="nofollow noopener" target="_blank">#Journalisten</a>-Teams vergeben <a href="https://mastodon.social/tags/Bewerbungen" class="mention hashtag" rel="nofollow noopener" target="_blank">#Bewerbungen</a> bis 9. September 2024 möglichInfos hier👇🏻 <a href="https://www.ciji.info/announcements/?pk_campaign=mailjet&pk_kwd=Monthly%20newsletter%20%23July&pk_source=newsletter#cross-border-grants-2024" rel="nofollow noopener" translate="no" target="_blank">https://www.ciji.info/announcements/?pk_campaign=mailjet&pk_kwd=Monthly%20newsletter%20%23July&pk_source=newsletter#cross-border-grants-2024</a>

DD3AH 📡📶 🏳️‍🌈🌐Ich versuche meine Artikel immer etwas "anzureichern", so dass auch Fortgeschrittene etwas davon haben. In diesem "Cheatsheet"-Artikel über <a href="https://mastodontech.de/tags/Winkel" class="mention hashtag" rel="tag">#Winkel</a> und <a href="https://mastodontech.de/tags/Steigung" class="mention hashtag" rel="tag">#Steigung</a> gibt es am Ende auch ein kleines Demo wie man <a href="https://mastodontech.de/tags/Assembler" class="mention hashtag" rel="tag">#Assembler</a>-Code und <a href="https://mastodontech.de/tags/FPU" class="mention hashtag" rel="tag">#FPU</a>-Befehle in C-Programme einbettet.<a href="https://dd3ah.de/winkel-und-steigung/" target="_blank" rel="nofollow noopener" translate="no">https://dd3ah.de/winkel-und-steigung/</a>

Jens Hannemann<a href="https://ioc.exchange/@matthew_d_green" class="u-url mention" rel="nofollow noopener" target="_blank">@matthew_d_green</a> I like to scare my students with the this little gem (and then I explain to them that every computer with an <a href="https://mastodon.online/tags/IEEE" class="mention hashtag" rel="nofollow noopener" target="_blank">#IEEE</a> 754 compliant <a href="https://mastodon.online/tags/FPU" class="mention hashtag" rel="nofollow noopener" target="_blank">#FPU</a> will give you the same answer, and for a very good reason)<a href="https://mastodon.online/tags/FloatingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#FloatingPoint</a> <a href="https://mastodon.online/tags/IEEE754" class="mention hashtag" rel="nofollow noopener" target="_blank">#IEEE754</a> <a href="https://mastodon.online/tags/STEM" class="mention hashtag" rel="nofollow noopener" target="_blank">#STEM</a>

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