syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // for LLVM's x87 support (double-rounding, value truncation; see
context_before:     // it has some known floating-point correctness issues mostly caused by a lack of people caring
context_after:     // <https://github.com/rust-lang/rust/issues/114479> for details). This can lead to incorrect