[Bug 248190] std::fabs is missing in 12.1-STABLE

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248190

            Bug ID: 248190
           Summary: std::fabs is missing in 12.1-STABLE
           Product: Base System
           Version: 12.1-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: standards
          Assignee: standards at FreeBSD.org
          Reporter: yuri at freebsd.org

Here https://en.cppreference.com/w/cpp/numeric/math/fabs it says that std::fabs
is defined since C++11.

However, this program fails:
> #include <cstdlib>
> 
> int main() {
> 	std::fabs(1.);
> }



> $ c++ -std=c++11 -o fabs fabs.cpp
> fabs.cpp:5:7: error: no member named 'fabs' in namespace 'std'
>         std::fabs(1.);
>         ~~~~~^


FreeBSD 12.1-STABLE r359625

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