Cannot use integers in template parameters due to private data members. about wide-integer HOT 6 CLOSED

Hello @xamidi this is now fixed by #336, see change set b3f4aac

Please use either the command line switch when callinng the compiler:

-DWIDE_INTEGER_DISABLE_PRIVATE_CLASS_DATA_MEMBERS

or

#define WIDE_INTEGER_DISABLE_PRIVATE_CLASS_DATA_MEMBERS

above the inclusion of the uintwide_t.h header file.

from wide-integer.

Thank you for the quick fix. I switched to the original file already, and all seems good.

Great! Thank you @xamidi for raising this interesting issue. Glad it works.
If you encounter anything else or have future ideas, please feel free to stop by.

from wide-integer.

... tried to use math::wide_integer::uint256_t as a template parameter, but it failed with an error ...

... the existence of non-public data members

Thank you for your query. I must admit, I have never tried this exact kind of templatization. Please allow me to take a look at a few options regarding compatibility and get back to your query shortly.

I would not immediately want to make the private data members public, but we might consider doing this with a new, specific compiler switch.

Anyway, please allow me to investigate your query a bit. i'll get back with suggestions...

Kind regards, Chris

from wide-integer.

Proposed solution:

#define WIDE_INTEGER_DISABLE_PRIVATE_CLASS_DATA_MEMBERS

This optional macro can be used to disable uintwide_t's private data members and make them public. This allows the uintwide_t class to be used as a structured class object, such as is needed for constant-valued template parameters in the sense of C++20's constexpr-ness.

Making private data members public is unusual for some designs so the default value is WIDE_INTEGER_DISABLE_PRIVATE_CLASS_DATA_MEMBERS disabled and uintwide_t's data members remain private.

from wide-integer.

The repair is cycling in CI.

Cc: @xamidi

from wide-integer.

Thank you for the quick fix. I switched to the original file already, and all seems good. :)

from wide-integer.