ref: 1f2656eeadb7b3230f92fbdfe1f31eebc5f81a71 dir: /lib/json/test/inputs/y_number_huge_exp.json/
[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]