{"ast_node_type":"variable","tokens":[{"end":23,"kind":"keyword","start":0,"text":"let"}]}
    let nan = f32::NAN;
    #[cfg(not(any(target_arch = "mips", target_arch = "mips64")))]
    // MIPS hardware except MIPS R6 treats f32::NAN as SNAN. Clear the signaling bit.