On 10/02/19 11:46 +0800, 李苏旺 wrote:
hi Marc, I am very glad to receive you reply, in fact , I have neither " C++ standard these are specified" nor "feature test macro" , I saw negation, conjunction and disjunction have added in type_traits , and similar , after I reference to https://whatis.techtarget.com/definition/logic-gate-AND-OR-XOR-NOT-NAND-NOR-and-XNOR#xnor , I think XOR(exclusive_or), NAND(not_conjunction), NOR(not_disjunction), XNOR(not_exclusive_or) can be added in type_traits , that is all . any way , thank you reminder , maybe I may write a proposal in the future , I hope these logical gates can be added too
I agree with Marc that we don't want to add these, unless they are first added to the C++ standard (and I don't think they are useful enough to add to the standard either).
