Re: Should include of quadmath.h in multiprecision/cpp_bin_float.hpp be guarded with ifdef BOOST_MATH_HAS_QUADMATH_H?

From: Matt Borland (matt_at_[hidden])
Date: 2024-07-19 19:53:02

> So I wanted to ask the question in the $subject. Could, or perhaps even
> should the include (together with its uses introduced in commit
> 4911125248bd) be guarded also by BOOST_MATH_HAS_QUADMATH_H and not just
> by BOOST_HAS_FLOAT128?
> 

> Thank you,
> 

> Martin
> 

> [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80753
> [2] https://bugzilla.opensuse.org/show_bug.cgi?id=1225861#c7
> 

Yes, we can implement similar logic in multiprecision since there is clearly an issue now. Boost.Math and Boost.Multiprecision both have standalone modes (that are also interoperable) so we can't directly check the macro from math.

Matt