Fast method to calculate inverse square root of a floating point number in IEEE 754 format
Given a 32 bit floating point number x stored in IEEE 754 floating point format, find inverse square root of x, i.e., x-1/2.
A simple solution is to do floating point arithmetic. Following is example function.
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Following is a fast and interesting method based for the same. See this for detailed explanation.
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This article is contributed by Shalki Agarwal. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above