This is a proposal. Steps here: https://isocpp.org/std/submit-a-proposal


On Fri, Sep 27, 2019 at 10:02 PM Vladimir Grigoriev via Std-Discussion <
std-discussion_at_[hidden]> wrote:

> Similar to the usual arithmetic conversions the operators of the standard
> class std::bitset should be templated.with different sizes
>
> For example
>
> template<size_t N1, size_t N2>
> bitset<std::max( N1, N2 )> operator &( const bitset<N1> &, const
> bitset<N2> & ) noexcept;
>
> Or
>
> template <size_t M>
> bitset<N> & operator &=( const bitset<M> & rhs) noexcept;
>
> With best regards,
> Vlad from Moscow
>
> You can meet me at http://cpp.forum24.ru/ or www.stackoverflow.com or
> http://ru.stackoverflow.com
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