c++ - Checking for bit flags

Question

I'm trying to check for a bit in a flags value of which flags can be |'d together. So far i'm using this

 if ((someclass.flags | CONST_SOMEFLAG) == someclass.flags)

to check if its true or false but is there a more "elegant" way of doing this?

Answer 1

Use bitwise OR to set the flags, use bitwise AND to test, like this:

if (someclass.flags & CONST_SOMEFLAG) ...