问浮点值丢失:：使用rapidjson读取JSON

EN

# jsonstring is the JSON string
rapidjson::Document firstJSON = readJsonString(jsonstring);
# val is the Value which is a small part of firstJSON document
rapidjson::Value &val = firstJSON["A"]["B"];

{
    "A":
    {
       "B":
       {
           "e0":0.03974359855055809,
           "e1":0.17799679934978486
       }
    }
    "R": "stringval"
}

"B":
{
  "e0":0.03974359855055809,
  "e1":0.17799679934978486
}

"B":
{
  "e0":0.0,
  "e1":0.1
}