[Bug target/121652] [15/16 Regression] round builtin does not raise FE_INVALID for signaling NaN

[xry111 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121652

--- Comment #21 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to Vineet Gupta from comment #19)

> Yeah I was just pointing a different/orthogonal potential existing issue.
> That current __builtin_isnan() can potentially raising an FP exception
> (Invalid op). This could be fine for its intended usage in round builtin,
> but not sure if that is fine as a general API / implementation agreement etc.

That is PR 66462.