ref: c7e6d109bcd7e0d0b33c5e134c83e3efe9154ef9 dir: /lib/json/test/inputs/y_number_huge_exp.json/
[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]