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

[rsworktech at outlook dot com via Gcc-bugs]

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

--- Comment #8 from Levi Zim <rsworktech at outlook dot com> ---
Created attachment 62200
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62200&action=edit
Preprocessed source code of test-nearbyint-except