[PATCH] D18639: Use __builtin_isnan/isinf/isfinite in complex

[Hal Finkel via cfe-commits]

hfinkel added a comment.

In https://reviews.llvm.org/D18639#545697, @EricWF wrote:

> LGTM.
>
> In https://reviews.llvm.org/D18639#514991, @hfinkel wrote:
>
> > In https://reviews.llvm.org/D18639#491232, @mclow.lists wrote:
> >
> > > And is there any reason why `__libcpp_isinf` can't just return `false` for non-fp types?
> >
> >
> > For custom numeric types that have an isinf, etc. found by ADL, they should continue to work.
>
>
> Do we already support custom numeric types? If so could you add a test for this under `test/libcxx`? Just a simple test case that instantiates the functions and shows it compiles.


As it turns out, the answer is: mostly. We should discuss this more: PR30589.


https://reviews.llvm.org/D18639