Is there a library or other way to do 128-bit math operations?

Posted by samoz on Stack Overflow See other posts from Stack Overflow or by samoz
Published on 2010-04-09T00:05:22Z Indexed on 2010/04/09 0:13 UTC
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I am writing a cryptography application and need to work with 128 bit numbers.

In addition to standard add, subtract, multiply, divide, and comparisons, I also need a power and modulo function as well.

Does anyone know of a library or other implementation that can do this? If not 128-bit, is there a 64-bit option available?

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