Re: Any free compilers for 64-bit integer arithmetics?

Mok-Kong Shen <mok-kong.shen@t-online.de> wrote:


> I want to do unsigned integer arithmetics on 64-bit opearands running
> on 64-bit Windows. Are there any free compilers of any higher-level
> language (higher than assembly language) that could be used for that
> purpose? Thanks.


Many compilers will do unsigned (and signed) 64 bit arithmetic even on
32 bit machines. For free compilers, gcc is very popular.


Most processors offer addition and subtraction at their native width,
multiplication with a double width product, and divide with a double
width dividend. If you want more, you, or the library of your
compiler, have to combine those as needed. Add, subtract, and
multiply are easy, divide is a little harder.


Java, also available free, supports a 64 bit type (long).


-- glen

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