best practice for overloading operators (&, |) for __int64 in icpc

Dear All,

One of our client (academic) researchers is using a third party R package which installs successfully on our compute cluster using R without MKL, gcc, and g++ (having support for said operators with __int64), but fails in R-with-MKL AFAIK due to lack of overload defined for said operators with __int64 in icpc.

I presume it's possible to introduce such overload definitions for use by icpc via additional, local code - independent of the said third party code, true?

If so, I'd appreciate if someone could provide a simple example or link thereto, thanks.

Also, if so, is it nonetheless better to request the third party owner to add such support - since AFAIK __int64 is not a standard c++ feature?

Please let me know if you need more info.

Thanks