jones_supa writes: Siddhesh Poyarekar from Red Hat has taken a professional look into mathematical functions found in Glibc (the GNU C library). He has been able to provide an 8-times performance improvement to slowest path of pow() function. Other transcendentals got similar improvements since the fixes were mostly in the generic multiple precision code. These improvements already went into glibc-2.18 upstream. Siddhesh believes that a lot of the low hanging fruit has now been picked, but that this is definitely not the end of the road for improvements in the multiple precision performance. There are other more complicated improvements, like the limitation of worst case precision for exp() and log() functions, based on the results of the paper Worst Cases for Correct Rounding of the Elementary Functions in Double Precision (PDF). One needs to prove that those results apply to the Glibc multiple precision bits.

An anonymous reader writes I'm a daily, all-day computer user and use two 19-inch monitors for my work. I'm at the age now where I need reading glasses, and my optometrist steered me to progressive lenses. I don't need any correction for distance, only reading. I'm trying very hard to get used to them, but I hate them. The focal point seems to be about 1 inch big, with everything around that blurry. Reading books on my iPad is a struggle; I have to turn my head side to side simply to keep the line of text in focus, and when I do that, the page warps and flow in a dizzying manner. I don't think reading should be like watching a tennis match. And using my two monitors at work? Hopeless and frustrating! Has anybody here who uses either very large or multiple computer monitors figured out how to comfortably use progressive glasses? Or are they simply inappropriate for this kind of use?

An anonymous reader writes Earlier last year WhatsApp announced partnership with Open WhisperSystems to integrate the ratcheting forward secrecy protocol found in their app called TextSecure, into WhatsApp. The protocol is supposed to provide end-to-end encryption between WhatsApp clients. So far it has been implemented only in WhatsApp on Android, with the rest of platforms yet to come. The implementation however has already made it into unofficial WhatsApp libraries which allow developers to use WhatsApp service in their applications, starting with a python-library called yowsup, and the rest will follow. It's worth mentioning that none of those libraries are supported nor approved by WhatsApp, so one has to wonder if WhatsApp is going to take some legal action (again) against them.

jfruh writes Heartbleed, Shellshock, Poodle — all high-profile vulnerabilities in widely used libraries that rocked the software industry in 2014. Sadly, experts are now beginning to believe that these aren't the only bugs lurking out there in widely used open source code, just the ones that grabbed the most attention. It's beginning to look like one of the foundation concepts of open source — that with enough eyes, all bugs are shallow — is a myth. Of course, probably no one believes that all bugs are instantly shallow, no matter how open is the source, or that open source software is immune from bugs -- particularly ESR, coiner of the phrase.

vikingpower writes For developers, 2015 got kick-started mentally by a Linus Torvald rant about parallel computing being a bunch of crock. Although Linus' rants are deservedly famous for the political incorrectness and (often) for their insight, it may be that Linus has overlooked Gustafson's Law. Back in 2012, the High Scalability blog already ran a post pointing towards new ways to think about parallel computing, especially the ideas of David Ungar, who thinks in the direction of lock-less computing of intermediary, possibly faulty results that are updated often. At the end of this year, we may be thinking differently about parallel server-side computing than we do today.

DeviceGuru writes As seen in this year-end summary of 40 hacker-friendly SBCs, 2014 brought us plenty of new Linux and Android friendly single-board computers to tinker with — ranging from $35 bargains, to octa-core powerhouses. Many of the new arrivals feature 1-2GHz multicore SoCs, 1-2GB RAM, generous built-in flash, gigabit Ethernet, WiFi, on-board FPGAs, and other extras. However, most of the growth has been in the sub-$50 segment, where the Raspberry Pi and BeagleBone reign supreme, but are now being challenged by a growing number of feature-enhanced clones, such as the Banana Pi and Orange Pi. Best of all, there's every reason to expect 2015 to accelerate these trends.

darkstar019 writes The Indian government has banned websites under the pretext that ISIS is using them for anti-Indian purposes. The list includes code sharing websites like Pastebin, Github and Sourceforge. As of now, these websites are still up. From the article: "Officials from the department of Information Technology and the department of telecom were not available for comment. 'These are all providing very dangerous kind of cut and paste services..You can take code, cut it, paste it, remove it, delete it,' said one government official who requested anonymity."

An anonymous reader writes: Anthony Ferrara, a developer advocate at Google, has published a blog post with some statistics showing the sorry state of affairs for website security involving PHP. After defining a list of secure and supported versions of PHP, he used data from W3Techs to find a rough comparison between the number of secure installs and the number of insecure or outdated installs. After doing some analysis, Ferrara sets the upper bound on secure installs at 21.71%. He adds, "These numbers are optimistic. That's because we're counting all version numbers that are maintained by a distribution as secure, even though not all installs of that version number are going to be from a distribution. Just because 5.3.3 is maintained by CentOS and Debian doesn't mean that every install of 5.3.3 is maintained. There will be a small percentage of installs that are from-source. Therefore, the real 'secure' number is going to be less than quoted." Ferrara was inspired to dig into the real world stats after another recent discussion of responsible developer practices.

theodp writes This holiday season, Google and the National Parks partnered to let girls program the White House Christmas tree lights. While the initiative earned kudos in Fast Company's 9 Giant Leaps For Women In Science and Technology In 2014, it also prompted an act of civil disobedience of sorts from St. Augustine of Canterbury School, which decided Google and the U.S. government wouldn't determine which of their kids would be allowed to participate in the coding event. "We decided to open it up to all our students, both boys and girls so that they could be a part of such an historic event, and have it be the kickoff to our Hour of Code week," explained Debra Knox, a technology teacher at St. Augustine.

theodp (442580) writes That President Obama became the first President to write a line of code (as a top Microsoft lobbyist looked on) is #1 on the White House's Top 9 science and technology highlights from 2014. To kick off this year's Hour of Code, the President 'learned to code' by moving a Disney Princess Elsa character 100 pixels on a screen, first by dragging-and-dropping Blockly puzzle pieces and then by coding 1 line of JavaScript. Interestingly, Bill Clinton might have been The First President To Write Code had Microsoft seen fit to use its patented, circa-1995 Graphical Programming System and Method for Enabling a Person to Learn Text-Based Programming — which describes how kids as young as 8-12 years of age can be taught to program by progressing from creating a program using graphical objects to doing so using text-based programming — to teach President Clinton to code some 20 years ago!

An anonymous reader writes: Y Combinator's Paul Graham has posted an essay arguing in favor of relaxed immigration rules. His argument is straight-forward: with only 5% of the world's population, the U.S. can only expect about 5% of great programmers to be born here. He says, "What the anti-immigration people don't understand is that there is a huge variation in ability between competent programmers and exceptional ones, and while you can train people to be competent, you can't train them to be exceptional. Exceptional programmers have an aptitude for and interest in programming that is not merely the product of training."

Graham says even a dramatic boost to the training of programmers within the U.S. can't hope to match the resources available elsewhere. "We have the potential to ensure that the U.S. remains a technology superpower just by letting in a few thousand great programmers a year. What a colossal mistake it would be to let that opportunity slip. It could easily be the defining mistake this generation of American politicians later become famous for."

Presto Vivace writes with news that the FCC has had trouble dealing with the sheer volume of comments submitted about net neutrality. There were millions of them, and they caused problems with the agency's 18-year-old Electronic Comment Filing System (ECFS). When the FCC attempted to dump the comments into XML format to make download and analysis easier, problems with Apache Solr meant roughly 680,000 didn't make the transfer. The agency promised to release a new set of fixed XML files in January that include all of the dropped comments. Despite many reports that the comments were "lost," they're all available using the ECFS.

An anonymous reader writes: Thomas Haigh, writing for Communications of the ACM, has an in-depth column about Donald Knuth and the history of computer science. It's centered on a video of Knuth giving a lecture at Stanford earlier this year, in which he sadly recounts how we're doing a poor job of capturing the development of computer science, which obscures vital experience in discovering new concepts and overcoming new obstacles. Haigh disagrees with Knuth, and explains why: "Distinguished computer scientists are prone to blur their own discipline, and in particular few dozen elite programs, with the much broader field of computing. The tools and ideas produced by computer scientists underpin all areas of IT and make possible the work carried out by network technicians, business analysts, help desk workers, and Excel programmers. That does not make those workers computer scientists. ... Computing is much bigger than computer science, and so the history of computing is much bigger than the history of computer science. Yet Knuth treated Campbell-Kelly's book on the business history of the software industry (accurately subtitled 'a history of the software industry') and all the rest of the history of computing as part of 'the history of computer science.'"

itwbennett writes: A new programming language out of MIT, called Ur/Web, provides a way for developers to write pages as self-contained programs. It incorporates many of the most widely-used web technologies, freeing developers from working with each language individually. Ur/Web's author, Adam Chlipala, an MIT computer science assistant professor, will present his work next month at the Association for Computing Machinery's Symposium on Principles of Programming Languages. He says, "In Ur/Web, everything is based on transactions, where a single client request is handled by what looks like an uninterrupted execution of a single function. The language implementation has optimizations in it to support running many requests in parallel, on real servers. But the programmer can pretend everything is a transaction and think in a simpler concurrency model."

mattydread23 writes Business Insider interviewed Jang Se-yul, a North Korean defector who trained in the country's Mirim University alongside some of the hackers who make up its elite Bureau 121 hacking squad. He explains how they train: 'They take six 90-minute classes every day, learning different coding languages and operating systems, from C to Linux. Jang says a lot of time was spent dissecting Microsoft programs, like the Windows operating system, and how to attack the overall computer IT systems of enemy countries like the U.S. or South Korea.' He also explains that these hackers are among the elite in North Korea, and even though they have unfiltered information about the outside world that their countrymen lack, most of them would never dream of leaving. (See also this story from earlier this month about the life of North Korea's elite hackers.)

jones_supa writes "The Subsurface development team proudly announces release 4.3 of the open source divelog and dive planning program, available for all major desktop operating systems. This is the software originally founded by Linus Torvalds, and the development seems to be continuing in great pace. Subsurface now supports flexible filtering of the dive list based on criteria like tags, people or gear. Dive characteristics can now also be copied and pasted to other dives. The dive profile now offers an easy to understand tissue saturation graph that shows tissue saturation at any point during the dive. As another new feature in the dive profile, one can turn on an improved visualization of the gas combinations used during a dive. The dive computer and file format support have also gotten large improvements."

Rob Y. writes: The discussion on Slashdot about Microsoft's move to open source .NET core has centered on:

1. whether this means Microsoft is no longer the enemy of the open source movement
2. if not, then does it mean Microsoft has so lost in the web server arena that it's resorting to desperate moves.
3. or nah — it's standard Microsoft operating procedure. Embrace, extend, extinguish.

What I'd like to ask is whether anybody that's not currently a .NET fan actually wants to use it? Open source or not. What is the competition? Java? PHP? Ruby? Node.js? All of the above? Anything but Microsoft? Because as an OSS advocate, I see only one serious reason to even consider using it — standardization. Any of those competing platforms could be as good or better, but the problem is: how to get a job in this industry when there are so many massively complex platforms out there. I'm still coding in C, and at 62, will probably live out my working days doing that. But I can still remember when learning a new programming language was no big deal. Even C required learning a fairly large library to make it useful, but it's nothing compared to what's out there today. And worse, jobs (and technologies) don't last like they used to. Odds are, in a few years, you'll be starting over in yet another job where they use something else.

Employers love standardization. Choosing a standard means you can't be blamed for your choice. Choosing a standard means you can recruit young, cheap developers and actually get some output from them before they move on. Or you can outsource with some hope of success (because that's what outsourcing firms do — recruit young, cheap devs and rotate them around). To me, those are red flags — not pluses at all. But they're undeniable pluses to greedy employers. Of course, there's much more to being an effective developer than knowing the platform so you can be easily slotted in to a project. But try telling that to the private equity guys running too much of the show these days.

So, assuming Microsoft is sincere about this open source move,
1. Is .NET up to the job?
2. Is there an open source choice today that's popular enough to be considered the standard that employers would like?
3. If the answer to 1 is yes and 2 is no, make the argument for avoiding .NET.

Mr. Jones writes: My 11-year-old son is fascinated by games — game mechanics in particular. He has been playing everything from Magic to WarFrame since he was 5 years old. He seems mostly interested in creating the lore and associated mechanics of the games (i.e. how a game works). If it was only programming I could help him, but I am lost when it comes to helping him learn more formal ways of developing and defining gameplay. I really see a talent for this in him and I want to support it any way I can. Can you suggest any conferences, programs, books, websites, etc. that would help him learn?

theodp writes: The idea of programming as a superpower was touched upon by CS teacher Alfred Thompson back in 2010, but it became a rallying call of sorts for the Hour of Code after Dropbox CEO Drew Houston described coding as "the closest thing we have to a superpower" in a Code.org video that went viral. And if the kids who learned to code with the President last week were dubious about the power of coding, this week's decision by Sony to scrap the release of the satirical film The Interview after a massive hack attack should put aside any doubts, especially after new revelations that Sony had reached out to the White House for help and screened the film for administration officials back in June. White House press secretary Josh Earnest said Thursday that the Obama Administration is viewing the Sony attack as a "serious national security matter" and is considering a range of possible options as a response, which could turn things into a contest of U.S. Superpower vs. Coding Superpower. In case it wasn't mentioned last week, remember to always use your coding superpower for good, kids!

MassDosage writes "At the the risk of exposing my age I remember building my first website using a rudimentary Unix text editor (Joe) and carefully handcrafting the Hypertext Markup Language (HTML) while directly logged on to the web server it was being served from. Back then Cascading Style Sheets (CSS) weren't even a glint in the eyes of their creators. A lot has changed and there's now a world of fancy WYSIWYG web page editors to choose from as well as Content Management Systems that allow you to create websites without looking at the underlying code at all. While this is all very useful and allows less technical people to create websites I still feel that having at least some knowledge of how everything works under the hood is empowering — especially in situations where you want to go beyond the limits placed on you by a certain tool. This is where Build Your Own Website: A comic guide to HTML, CSS and Wordpress comes into the picture. Its aim is to enable people new to web development to learn the subject by teaching the fundamentals of HTML and CSS first and only then describing how to use a Content Management System (CMS) — in this case Wordpress. While Wordpress might not be everyone's kettle of fish it's a good choice as an example of a modern CMS that is easily accessible and very popular. The concepts presented are simple enough that it should be easy enough for a reader to apply them to a different CMS should they want to. Read below for The rest of MassDosage's review.