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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 do I create directory if it doesn't exist to create a file?
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400
To Create
(new FileInfo(filePath)).Directory.Create() Before writing to the file.
....Or, If ...
SQLAlchemy IN clause
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answered Dec 22 '11 at 11:20
SimonSimon
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How to prevent errno 32 broken pipe?
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answered Aug 8 '12 at 14:40
Maksim SkurydzinMaksim Skurydzin
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How to determine if one array contains all elements of another array
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GeoGeo
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Authenticating in PHP using LDAP through Active Directory
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answered Oct 5 '08 at 14:10
ceejayozceejayoz
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How to add Active Directory user group as login in SQL Server
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marc_smarc_s
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warning: [options] bootstrap class path not set in conjunction with -source 1.5
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102
From a blog post:
To use javac from JDK N to cross-compiler to an older platform version, t...
Apply CSS style attribute dynamically in Angular JS
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190
ngStyle directive allows you to set CSS style on an HTML element dynamically.
Expression wh...