In the case of negative double value, it is formatted without including ".0"

[Akifumi-Yanai]

I am sorry that my English is so bad.

I'm using json-c 0.13.1.

If set negative double value, it will be formatted without including ".0".
Is this correct?

json-c/ChangeLog

Line 23 in 3e81b4a

* PR#394: fix handling of custom double formats that include a ".0"

code:

struct json_object* json_obj = json_object_new_object();
struct json_object* positive_double_json_obj = json_object_new_double(12e+4);
struct json_object* negative_double_json_obj = json_object_new_double(-12e+4);
json_object_object_add(json_obj, "positive", positive_double_json_obj);
json_object_object_add(json_obj, "negative", negative_double_json_obj);

std::cout << "--- convert to string ---" << std::endl;
std::cout << json_object_to_json_string(json_obj) << std::endl;
std::cout << "-------------------------" << std::endl;

result:

--- convert to string ---
{ "positive": 120000.0, "negative": -120000 }
-------------------------

[hawicz]

That's certainly inconsistent. It looks like the code at https://github.com/json-c/json-c/blob/master/json_object.c#L841 doesn't take into account a leading "-" when deciding whether to add a ".0"

[hawicz]

s/b fixed with the most recent code now.