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User: Nyall

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Comments · 191

  1. Re:its a really simple answer on Why Is It So Difficult To Allow Cross-Platform Play? · · Score: 1

    The code you link to has a sign extension bug. You need to use the unsigned right shift, which moves zeros into the most significant bits:

    http://java.sun.com/docs/books/tutorial/java/nutsandbolts/op3.html

  2. Re:its a really simple answer on Why Is It So Difficult To Allow Cross-Platform Play? · · Score: 1

    I wouldn't call it a joke, just being glib and facetious.

    I'm not normally one to complain about the stupidity, relevance or obviousness (or google-it-yourself) of ask-slashdot questions but this one is little more than fodder for some sony/microsoft bashing. There are such things as stupid questions, so I gave it a stupid answer.

  3. Re:FLOATING POINT IS NOT CROSS PLATFORM on Why Is It So Difficult To Allow Cross-Platform Play? · · Score: 1

    p.s. while both consoles use the powerpc the xbox has a fused dot product operation (a=b*c+d*e). Thats one floating point variance I can think of, I'm sure there are others.

  4. Re:FLOATING POINT IS NOT CROSS PLATFORM on Why Is It So Difficult To Allow Cross-Platform Play? · · Score: 1

    Two replies to that post and both are discussing the gaming implications? Honestly I was explaining x86 vs powerpc, nothing more or less.

    I'll agree floating point error accumulations should be easy to compensate for. But its not a problem I've ever had to work on.

  5. Re:its a really simple answer on Why Is It So Difficult To Allow Cross-Platform Play? · · Score: 2, Insightful

    woosh went over your heads. A silly question got a glib answer.

  6. Re:FLOATING POINT IS NOT CROSS PLATFORM on Why Is It So Difficult To Allow Cross-Platform Play? · · Score: 1

    IEEE rounding is different between x86 and powerpc. x86 CPUs use an 80 bit internal representation. Those bits remain as long as the data resides in a register. Also the powerPC floating point offers a fused multiply accumulate operation (one instruction can do x+y*z) that can produce different rounding results. Knowing x86 they probably have it but its addition varies between architectures.

    http://en.wikipedia.org/wiki/Multiply-accumulate

  7. its a really simple answer on Why Is It So Difficult To Allow Cross-Platform Play? · · Score: 5, Funny

    PS3s are big endian machines.
    Xbox 360s are little endian.

    Q.E.D They can't talk to each other.

  8. Re:No, please, stay on my lawn... on The Mindset of the Incoming College Freshmen · · Score: 1

    What the hell is with this obsession of low digit user ID's ?

  9. Re:Inaccurate on Green Cement Absorbs Carbon · · Score: 1

    p.s. since the summary terms it "carbon negative" those numbers probably aren't the best...

  10. Re:Inaccurate on Green Cement Absorbs Carbon · · Score: 1

    This is being compared to portland cement. Just to pull numbers out of my butt, if the production of one ton of portland cement releases 6 tons of CO2, then one ton of this new cement (which use 3/4 tons less than portland) will release 5.25 tons of CO2.

  11. Re:Is it does me or does on Green Cement Absorbs Carbon · · Score: 1

    Ah yes, why do xyz when abc would be so much magically better? Because people are always tackling problems from all sides.

    A quick googling tells me that cement production requires baking the stuff at 2700F so I presume abc would mean either:
    a) Get rid of the need to bake it at such a temperature.
    b) Generate that heat with a different method.

    Not to say that A is impossible but it sounds like a really hard problem. If someone solves it they deserve their billion dollars.

    And B is also hard because I suspect the best way to generate 2700 degrees is with fire. At this point I'm too lazy to google how high electricy->heat conversion can go (especially for the scales that a cement production plant needs) Any experts out there?

  12. okey dokey on New Company Seeks to Bring Semantic Context To Numbers · · Score: 3, Insightful

    Sounds like a solution looking for a problem.

  13. Re:The Dilemma on Prehistoric Gene Reawakened To Battle HIV · · Score: 1

    Congratulations, You know what 'cervicovaginal tissues' means.

  14. Re:Only a few ways ... on Ads Retroactively Added To Wipeout HD, Soon Others · · Score: 1

    Is a class action lawsuit #2 or #3 ?

  15. Re:Boycott on Ads Retroactively Added To Wipeout HD, Soon Others · · Score: 1

    I was presuming a boycott would involve the current product at hand. Its a tad hard to boycott Sony Entertainment if you own a PS3.

  16. Re:Boycott on Ads Retroactively Added To Wipeout HD, Soon Others · · Score: 5, Insightful

    Read the summary?
    How do you boycott something when the advertisements show up several months after you've bought it?

  17. huh? on Sun's JRuby Team Jumps Ship To Engine Yard · · Score: 0, Flamebait

    OMG!!! 3 people jump ship from a bought out company!!

  18. Re:Dr. Who on Bill Gates Remembers 1979 · · Score: 1

    By being a billionaire he is famous and under the peer pressure from the rest of society to be a philanthropist. If he wasn't giving away his money he'd go down in history as as the biggest scrooge to ever walk the earth.

    Also each of those multi-millionaire's probably has to cover the cost of living some extravagant lifestyle. So if that billionaire has a lifestyle 1000 * millionaire's lifestyle, then yes, it is better to have one billionaire.

  19. hmmm on MIT Electric Car May Outperform Rival Gas Models · · Score: 1

    100 hours a week? That is a great way to do faulty engineering.

    If I knew my car was designed by engineers who worked that much I'd get rid of it.

  20. Re:Do they still Sell 100-in-1 kits? on Low-Budget Electronics Projects For High School? · · Score: 1

    Methinks the previous poster was referring to society not evolution.

  21. Re:lasers? on Incandescent Bulbs Return To the Cutting Edge · · Score: 1

    I have a loose definition of safe? I still cook my food.

  22. Re:lasers? on Incandescent Bulbs Return To the Cutting Edge · · Score: 1

    Where exactly in the constitution is that a mandated power of the federal govt?

    Not that I'm for nanny states but I do appreciate that the federal government has entities like the FDA that make sure the food I eat is most likely safe.

  23. Re:When pollutants cross state lines on Incandescent Bulbs Return To the Cutting Edge · · Score: 1

    would the analagy work better if they were selling power across state lines?

  24. Re:#1: on Indian CEO Says Most US Tech Grads "Unemployable" · · Score: 2, Insightful

    if you are poor, you can be paid a lot less to do the same job than someone less motivated and in a better socioeconomic position

    I've been to India twice this year (for a total of 10 weeks) to work with HCL engineers. They are definitely not poor and live very good lives. A substantial number of them have been to the U.S. on work visas (they love wallmart) and when I asked which country they prefer they all like India better. Which flabbergasts me because in Chennai even the natives don't drink the tap water. But home is home.

    Any society has class stratification. It is the lowest class that determines the cost of many basic goods. My impression is that India's massive underclass keeps the cost of living down, which allows the next higher class to also live cheaply.

  25. Re:How hard is it for a computer to do addition? on Software Bug Adds 5K Votes To Election · · Score: 1

    Do they also give you jtag access to the HW the minute the polls close to download its programming? So that you can disassemble it and compare it to the binary of the compiled source.