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Formally verifying a floating-point division routine with Gappa – part 1

news.ycombinator.com Unknown 2025-10-23 06:35:41

We have recently released a set of optimized assembly-language routines for basic floating-point arithmetic, in Arm Optimized Routines, under an open-source license. These functions perform the same operations as hardware floating point instructions, for example addition, multiplication, and division. However, they are implemented using only integer 32-bit Arm instructions, for Arm CPUs without hardware floating point. Existing open-source libraries such as libgcc and compiler-rt offer similar

Topics: bit code error gappa value

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The Four Fallacies of Modern AI

news.ycombinator.com Alejandro Piad Morffis 2025-10-25 11:26:16

I've spent the last few years trying to make sense of the noise around Artificial Intelligence, and if there's one feeling that defines the experience, it's whiplash. One week, I'm reading a paper that promises AI will cure disease and unlock unimaginable abundance; the next, I'm seeing headlines about civilizational collapse. This dizzying cycle of AI springs, periods of massive investment and hype, followed by the chilling doubt of AI winters isn't new. It's been the engine of the field for de

Topics: ai intelligence isn just world

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Removing yellow stains from fabric with blue light

news.ycombinator.com American Chemical Society 2025-10-22 09:01:54

This article has been reviewed according to Science X's editorial process and policies . Editors have highlighted the following attributes while ensuring the content's credibility: Exposing a sweat-like stain on cotton (left image) to a blue LED light for 10 minutes significantly removed the yellow color (right image). Credit: Tomohiro Sugahara Sweat and food stains can ruin your favorite clothes. But bleaching agents such as hydrogen peroxide or dry-cleaning solvents that remove stains aren't

Topics: blue led light stains yellow

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The HackberryPi CM5 handheld computer

news.ycombinator.com Unknown 2025-10-23 03:36:46

The HackberryPi_CM5 project repository The HackberryPi_CM5 project is a RaspberryPi Compute Module SBC(single board computer) powered handheld computer with reuse of original keyboard from old Blackberry phones. The goal of the project is to create a portable linux-powered computer that lets the user gain a deeper understanding of Linux and explore the architecture of hardware, software, and the Linux kernel. This repository will be used to share information about the project and tutorial about

Topics: battery cm5 hackberrypi_cm5 information page

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Learning lessons from the loss of the Norwegian frigate Helge Ingstad

news.ycombinator.com Dick Van Dyke 2025-10-23 00:02:15

In 2021 the Accident Investigation Board – Norway (AIBN) published a detailed report covering the loss of HNoMS Helge Ingstad after she collided with an oil tanker in November 2018. There is much to be learned from this event that is applicable to the RN and global navies. In this in-depth, although far from exhaustive, article we describe the incident and look at some of the key lessons. The accident in summary On 8th November 2018, the frigate Helge Ingstad (HING) was heading south down Hjel

Topics: control damage hing ship tanker

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Rewriting Dataframes for MicroHaskell

news.ycombinator.com Michael Chavinda 2025-10-22 16:45:36

My fondness for alternative Haskells It’s often said that the best way to learn a programming language (or programming in general) is to make things that you actively use. After I first learnt Haskell, I thought it natural to try and make something I’ll use in my day-to-day life. An idea of what to make almost immediately sprang up in my head. Because I spent most of my college years travelling with the university’s debate team, I thought it would be cool to make a simple countdown timer with l

Topics: df expr int interpret xs

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What would you do with 52 hours a week of discretionary time?

news.ycombinator.com Unknown 2025-10-22 07:30:06

What would you do with 52 hours a week of discretionary time? Make your time count. Published: 04 June 2023 Productivity Tim Urban has a good article describing how we have 100 10-minute "blocks" per day when we aren't sleeping. It's a great article, but I want to reframe it a little. I just filled out his graph for my weekdays: 8 hours doing school, 2 hours of eating, 50m each of commute & self-care. So after a typical weekday I only have 30 blocks = 300 minutes left of discretionary time

Topics: 52 discretionary hours time week

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Where did the Smurfs get their hats (2018)

news.ycombinator.com Augie De Blieck Jr. 2025-10-25 09:52:32

That white floppy hat on top of every Smurf’s head. What is it? Where did it come from? Do Smurfs have bald spots? We’ve got a history lesson coming up here, folks. Sit back. But, first, let’s answer a side question: What’s Under a Smurf’s Hat? There’s only one true source for information on this question, and that’s Peyo’s comics. Accept no substitutes. Yes, there are probably moments in various movies and cartoons where a Smurf can been seen without their hat on. That’s not Peyo. Peyo s

Topics: french hat peyo smurf smurfs

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AirPods Pro 3 vs Pixel Buds Pro 2: Which Wireless Earbuds Are Better?

gizmodo.com James Pero 2025-10-25 04:27:54

Apple’s AirPods Pro 3 are here, and with their arrival comes a lot of questions. One of the big questions after Apple’s annual iPhone event is, “Should I buy new AirPods right now?” But before you can answer that, it’s important to know the competition, and the main one is Google’s Pixel Buds Pro 2. While both bear the “Pro” moniker in their names, they’re not created equal, and small differences in features could have a big impact on which pair you ought to buy. If you’re wondering which trigg

Topics: airpods apple buds pixel pro

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1Password Coupon: Score a Free Trial in September

wired.com Scott Gilbertson 2025-10-25 14:00:00

1Password has long been one of our favorite password managers. It's our upgrade pick for all the extra features it offers compared to other password managers. 1Password has apps that work just about everywhere, including on macOS, iOS, Android, Windows, Linux, and ChromeOS. There are plug-ins for your favorite web browser too, which makes it easy to generate and edit new passwords on the fly. What Are the Benefits of 1Password? There are also some very nice features in 1Password that you won't

Topics: 1password manager month password plan

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30% Off Tempur-Pedic Promo Codes | September 2025

wired.com Julia Forbes 2025-10-25 14:30:00

Life is hard, but you know what isn’t? Tempur-Pedic mattresses. This brand’s been around for a long while, which isn’t shocking given the high-quality materials that perform for those that need advanced pressure relief and support. If you’re someone who deals with regular aches and pains, this is a good place to start looking for a new mattress. For those that also want to avoid putting a strain on their budget, now’s a good time to look, as there are several limited-time deals currently running

Topics: 300 mattress pedic pillows tempur

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Samsung’s Galaxy Ultra phones could be stuck with the same telephoto camera until 2027

androidauthority.com Unknown 2025-10-25 17:05:11

Ryan Haines / Android Authority TL;DR According to Ice Universe, Samsung plans to use the same 50MP telephoto sensor on the Galaxy S6 Ultra and S27 Ultra as the one it introduced on the S24 Ultra. The tipster previously claimed that the Galaxy S26 Ultra may actually downgrade the 3x shooter to a smaller sensor. If true, the move would echo Samsung’s decision to stick with its 200MP ISOCELL HP2 main sensor and Sony’s IMX754 3x sensor across multiple generations. Samsung’s Ultra flagships are

Topics: 3x galaxy samsung sensor ultra

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Tim Cook and other Apple execs talk iPhone Air’s design vision in new WSJ interview

9to5mac.com Marcus Mendes 2025-10-25 14:50:54

In a new interview with The Wall Street Journal, Apple CEO Tim Cook, Apple’s Vice President of Industrial Design Molly Anderson, and Apple’s Vice President of Human Interface Design Alan Dye discussed their hopes and own reactions to the iPhone Air. Here are the details. ‘An iPhone for the Ozempic era’ While the WSJ’s story may include the oddest definition of the iPhone Air yet, it does provide some insight into what Apple sees as the device’s strongest selling points. During the entire inte

Topics: air apple iphone pro said

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Apple Watch Series 11 vs. Samsung Galaxy Watch 8: I've tested both, and here's the winner

zdnet.com Nina Raemont 2025-10-25 14:20:00

Nina Raemont/ZDNET Follow ZDNET: Add us as a preferred source on Google. Apple unveiled its Watch Series 11 during this week's iPhone event, alongside two other smartwatch models. The Series 11 gets Sleep Scores (crowd roars), a longer battery life, and all of Apple's WatchOS 26 software, which is expected to be released to the public soon. Also: I tried the Apple Watch Series 11, Watch Ultra 3, and SE - what the keynote didn't tell you But how does it compare to its closest Android rival, t

Topics: ai apple samsung watch workout

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iPhone Air vs. iPhone 17 Pro Max: I compared Apple's two best models, and I'd buy this one

zdnet.com Cesar Cadenas 2025-10-25 14:28:00

Jason Hiner/ZDNET Follow ZDNET: Add us as a preferred source on Google. Apple's iPhone 17 lineup brings some of the biggest design changes the smartphone series has seen in years, and no two models better highlight this shift than the iPhone Air and iPhone 17 Pro Max. The iPhone Air is one of the thinnest smartphones Apple has ever made, made for those who value a sleek, portable design. Meanwhile, the iPhone 17 Pro Max doubles down on power with a cutting-edge camera system and a new vapor c

Topics: 17 air iphone max pro

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iPhone 17 Pro Max vs. Google Pixel 10 Pro XL: I compared both phones, and it's a close one

zdnet.com Kerry Wan 2025-10-25 14:56:21

Jason Hiner and Kerry Wan/ZDNET Follow ZDNET: Add us as a preferred source on Google. It feels like yesterday when I sat in a Brooklyn warehouse to watch Jimmy Fallon introduce the Google Pixel 10 series to the world. Since then, Apple has joined the fray with the new iPhone 17, and now I've got a few too many new handsets on my mind. Between what Apple and Google announced, the iPhone 17 Pro Max and Google Pixel 10 Pro XL stand out as the best of the best. They're the models that tech enthus

Topics: apple google iphone pixel pro

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XNEdit – fast and classic X11 text editor

news.ycombinator.com Unknown 2025-10-25 12:45:50

XNEdit Available on Sourceforge and Github Documentation

Topics: available documentation github sourceforge xnedit

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Deliberate Abstraction

news.ycombinator.com Unknown 2025-10-22 21:20:52

I recently wrote code to simulate a card game. The details are irrelevant, but it was a great opportunity to put inside-out design into practise, because when I started programming, I didn’t actually know the rules of the game, nor what all the card types were. Thus, I started from a very general core that I did know with certainty: Card - name : string - valid_play : Card -> bool A card has a name and it gets to decide on its own whether it’s legal to play this card on top of another card. Na

Topics: card play player ply table

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Hot Chips 2025: Session 1 – CPUs – By George Cozma

news.ycombinator.com George Cozma 2025-10-23 02:02:56

Hello you fine Internet folks, Today we are talking about Hot Chips 2025 and specifically the CPU session at Hot Chips 2025 where we had presentations from Condor Computing about their new Cuzco core, PEZY about their upcoming SC4s chip, IBM about their Power11 chip which is already shipping to customers, and Intel about their upcoming E-Core based Xeon CPU codenamed Clearwater Forest. Hope y'all enjoy! If you’d like more detailed break downs of most of the chips and the presentations, he

Topics: chips chipsandcheese com core hot

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Seoul says US must fix its visa system if it wants Korea's investments

news.ycombinator.com Unknown 2025-10-25 15:58:51

No Content Available

Topics: available content

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“No Tax on Tips” Includes Digital Creators, Too

news.ycombinator.com Alex Weprin 2025-10-25 06:26:07

President Trump’s One Big Beautiful Bill Act may have quietly changed the economics of the creator economy. The U.S. Treasury Department this past week released a list of occupations “that customarily and regularly received tips” and thus will be eligible for the administration’s flagship “no tax on tips” policy, which will let eligible taxpayers deduct their tipped income, within certain limits. And while the list includes the obvious (bartenders, food servers, casino dealers and housekeepers

Topics: creators eligible income podcasters tips

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A polyglot's guide to multiple-dispatch (2016)

news.ycombinator.com Unknown 2025-10-21 20:49:20

This is the first article in a series dedicated to multiple dispatch - an advanced abstraction technique available to programmers out-of-the-box in some languages, and implementable in others. This first post in the series presents the technique and explains the problem it intends to solve. It uses C++ as the presentation language because C++ does not support multiple dispatch directly, but can be used to implement it in various ways. Showing how multiple dispatch is implemented in a language th

Topics: const dispatch ellipse rectangle shape

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Where did the Smurfs get their hats

news.ycombinator.com Augie De Blieck Jr. 2025-10-25 14:52:32

That white floppy hat on top of every Smurf’s head. What is it? Where did it come from? Do Smurfs have bald spots? We’ve got a history lesson coming up here, folks. Sit back. But, first, let’s answer a side question: What’s Under a Smurf’s Hat? There’s only one true source for information on this question, and that’s Peyo’s comics. Accept no substitutes. Yes, there are probably moments in various movies and cartoons where a Smurf can been seen without their hat on. That’s not Peyo. Peyo s

Topics: french hat peyo smurf smurfs

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Court rejects Verizon claim that selling location data without consent is legal

news.ycombinator.com Unknown 2025-10-25 15:27:31

Verizon lost an attempt to overturn a $46.9 million fine for selling customer location data without its users' consent. The US Court of Appeals for the 2nd Circuit rejected Verizon's challenge in a ruling issued today. The Federal Communications Commission fined the three major carriers last year for violations revealed in 2018. The companies sued the FCC in three different courts, with varying results. AT&T beat the FCC in the reliably conservative US Court of Appeals for the 5th Circuit, whi

Topics: circuit data fcc location verizon

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The iPhone Air Looks Like a Wild Preview for Apple AR Glasses

gizmodo.com James Pero 2025-10-25 16:19:35

Apple had a lot of announcements this week, but arguably none was bigger (and paradoxically thinner) than the iPhone Air. For one, there’s the fact that this is Apple’s first-ever phone with “Air” branding, marking a rare new category of iPhone, both present and future. Then, there’s the fact that the iPhone Air is very slim—5.64mm to be exact. Gizmodo’s Senior Editor, Consumer Tech, Raymond Wong, got some hands-on time with the iPhone Air, and he says it feels as thin as it looks—even thinner t

Topics: air apple battery glasses iphone

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Today's Wordle Hints, Answer and Help for Sept. 11, #1545

cnet.com See Full Bio 2025-10-25 10:00:05

Looking for the most recent Wordle answer? Click here for today's Wordle hints, as well as our daily answers and hints for The New York Times Mini Crossword, Connections, Connections: Sports Edition and Strands puzzles. Today's Wordle puzzle was an easy one for me, for a change! If you need a new starter word, check out our list of which letters show up the most in English words. If you need hints and the answer, read on. Today's Wordle hints Before we show you today's Wordle answer, we'll gi

Topics: answer hint hints today wordle

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iPhone 17 Pro Max vs. iPhone 16 Pro Max Spec Compared: Big Apple Battle

cnet.com See Full Bio 2025-10-25 13:40:00

The iPhone 17 Pro Max is here, packing a variety of upgrades from the cameras to the design. But how does it compare with its predecessor, the iPhone 16 Pro Max? Let's take a close look at the specs and find out. Keep in mind that specs don't tell the whole story so make sure to check out CNET's ongoing coverage of the iPhone 17 Pro Max -- as well everything else from Apple's "awe-dropping" event -- for more information. Watch this: iPhone 17 Pro Hands-On: Higher Price and Newish Design 03:41

Topics: 17 apple iphone max pro

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Pentagon begins deploying new satellite network to link sensors with shooters

arstechnica.com Unknown 2025-10-25 16:01:11

The first 21 satellites in a constellation that could become a cornerstone for the Pentagon's Golden Dome missile defense shield successfully launched from California Wednesday aboard a SpaceX Falcon 9 rocket. The Falcon 9 took off from Vandenberg Space Force Base, California, at 7:12 am PDT (10:12 am EDT; 14:12 UTC) and headed south over the Pacific Ocean, heading for an orbit over the poles before releasing the 21 military-owned satellites to begin several weeks of activations and checkouts.

Topics: 21 force missile satellites space

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Perplexity reportedly raised $200M at $20B valuation

techcrunch.com Marina Temkin 2025-10-25 17:59:10

In Brief Perplexity, the AI-powered search startup that compete with Google by providing conversational answers to user queries, has secured $200 million in new capital at a $20 billion valuation, The Information reported. The fresh funding comes just two months after the company raised $100 million at an $18 billion valuation, according to Bloomberg’s July report. Since its founding three years ago, the rapidly growing AI company has raised $1.5 billion in total funding, according to PitchBoo

Topics: billion company google million perplexity

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Opendoor taps new CEO and names Keith Rabois chairman, boosting stock 30%

cnbc.com Annie Palmer 2025-10-25 18:02:53

Keith Rabois of Khosla Ventures attends Day 3 of TechCrunch Disrupt SF 2013 at San Francisco Design Center on September 11, 2013 in San Francisco, California. Opendoor , the online real estate platform that's seen a surge of retail investor interest in recent months, said Wednesday that it's tapped former Shopify executive Kaz Nejatian as CEO and named co-founder Keith Rabois as chairman. The stock popped 30% in extended trading, and is now up more than fifteenfold since hitting its record low

Topics: ceo company opendoor rabois shopify

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Latest Tech News

Formally verifying a floating-point division routine with Gappa – part 1

The Four Fallacies of Modern AI

Removing yellow stains from fabric with blue light

The HackberryPi CM5 handheld computer

Learning lessons from the loss of the Norwegian frigate Helge Ingstad

Rewriting Dataframes for MicroHaskell

What would you do with 52 hours a week of discretionary time?

Where did the Smurfs get their hats (2018)

AirPods Pro 3 vs Pixel Buds Pro 2: Which Wireless Earbuds Are Better?

1Password Coupon: Score a Free Trial in September

30% Off Tempur-Pedic Promo Codes | September 2025

Samsung’s Galaxy Ultra phones could be stuck with the same telephoto camera until 2027

Tim Cook and other Apple execs talk iPhone Air’s design vision in new WSJ interview

Apple Watch Series 11 vs. Samsung Galaxy Watch 8: I've tested both, and here's the winner

iPhone Air vs. iPhone 17 Pro Max: I compared Apple's two best models, and I'd buy this one

iPhone 17 Pro Max vs. Google Pixel 10 Pro XL: I compared both phones, and it's a close one

XNEdit – fast and classic X11 text editor

Deliberate Abstraction

Hot Chips 2025: Session 1 – CPUs – By George Cozma

Seoul says US must fix its visa system if it wants Korea's investments

“No Tax on Tips” Includes Digital Creators, Too

A polyglot's guide to multiple-dispatch (2016)

Where did the Smurfs get their hats

Court rejects Verizon claim that selling location data without consent is legal

The iPhone Air Looks Like a Wild Preview for Apple AR Glasses

Today's Wordle Hints, Answer and Help for Sept. 11, #1545

iPhone 17 Pro Max vs. iPhone 16 Pro Max Spec Compared: Big Apple Battle

Pentagon begins deploying new satellite network to link sensors with shooters

Perplexity reportedly raised $200M at $20B valuation

Opendoor taps new CEO and names Keith Rabois chairman, boosting stock 30%

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