Re: signbit(), C++, and Solaris 10

[Bruno Haible via GNU roff typesetting system discussion]

Damian McGuckin wrote:
> Why does 'signbit()' have type 'bool' in the local 'math.h'?

Because that's the mandated return type in C++:
https://en.cppreference.com/w/cpp/numeric/math/signbit
https://en.cppreference.com/w/c/numeric/math/signbit