what if the bindings are architecture specific, would you vendor all versions?

The instrinsics are evaluated with a compile-time machine (github.com/rust-lang/ru...) which is the same across all targets (probably?)

Seems like it always produces the same quiet NaN without a payload: github.com/rust-lang/ru... - not 100% sure, I just did a search for "nan" in rustc_const_eval