How to deal with 32 bit and 64 bit integers in matlab?

2014 2 16
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更新时间：2014 2 27
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I want to find out correlation coefficient. It need to do 64 or 32 bit integer addition,multiplication and square root. sqrt() doesn't support 32 bit integer. What is solution?

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David Young
David Young 2014-2-16

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Just convert to double or single, using for example
y = sqrt(double(x));
Round the result and convert back to an integer if necessary.
Alternatively, write a square root function that uses purely integer arithmetic. It will probably be slow though. I'd do the conversion.

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