But it returns bool.

On Sun, Oct 16, 2022 at 5:27 PM Bjorn Reese via Std-Proposals <
std-proposals_at_[hidden]> wrote:

> On 10/16/22 10:15, blacktea hamburger via Std-Proposals wrote:
> > See https://en.m.wikipedia.org/wiki/Sign_function
>
> https://en.cppreference.com/w/cpp/numeric/math/signbit
>
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