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John Carmack's Unusual Fast Inverse Square Root (Quake III)
...ates the inverse square root of a float, 4x faster than regular (float)(1.0/sqrt(x)) , including a strange 0x5f3759df constant. See the code below. Can someone explain line by line what exactly is going on here and why this works so much faster than the regular implementation?
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How to use ArrayAdapter
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edited Oct 20 '16 at 2:31
ivandov
42166 silver badges1212 bronze badges
answered Feb 15 '1...
How would one call std::forward on all arguments in a variadic function?
...ng the boost preprocessor meta-library to make a variadic template (using 2010 and it doesn't support them). My function uses rval references and std::forward to do perfect forwarding and it got me thinking...when C++0X comes out and I had a standard compiler I would do this with real variadic tem...
Ruby sleep or delay less than a second?
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203
sleep(1.0/24.0)
As to your follow up question if that's the best way: No, you could get not...
Limit ggplot2 axes without removing data (outside limits): zoom
...y explains this on pp. 99; 133 of his ggplot2 book (1st edition), or pp. 160 - 161 if you have the second edition.
The issue is that, as you say, limits inside the scale or setting ylim() causes data to be thrown away, as they are constraining the data. For a true zoom (keep all the data), you nee...
Convert numpy array to tuple
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Niklas B.Niklas B.
80.9k1111 gold badges173173 silver badges210210 bronze badges
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Mixing a PHP variable with a string literal
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boroboris
1,01611 gold badge1515 silver badges2626 bronze badges
answered Mar 20 '11 at 13:55
alexalex
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How to implement a property in an interface
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301
In the interface, you specify the property:
public interface IResourcePolicy
{
string Versi...
LINQ Group By into a Dictionary Object
...is immutable.
– Amit
Nov 12 '14 at 20:15
1
My 2 Cents (just 'cause it kept me struggling for an h...
Intercepting links from the browser to open my Android app
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answered Oct 22 '09 at 20:09
jameshjamesh
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