double value return

[clive-ccc]

double func();
int func();
func_ExpectAndReturn(0,10.0);,if func define return double,will return 0.if func define return int,it is correct.
is not support double?

[mvandervoord]

The easy answer is "yes. It supports doubles".

The longer answer is really a bunch of questions, so we can figure out what's going on with your setup.

(A quick aside, Looking ahead to your next potential question): If you were asking about using a double as an argument, then I would point out that you need to define UNITY_INCLUDE_DOUBLE in your list of defines. Assertions of doubles is disabled by default, but adding that define will enable them.

The define above has nothing to do with your situation, though. You're using a double as a return value. This should always work, no matter if double assertions are defined or not.

I'm assuming that your example above is really two different examples... something more like this:

double func_d();
int func_i();

and then they get checked like so:

func_d_ExpectAndReturn(10.0);
func_i_ExpectAndReturn(0);

If my description is correct, and you're still having problems, there is something that Ceedling (and specifically Unity) hasn't guess correctly about your target... and you've not specified enough to help it out of this problem. To help with that, I'd need to know more. What compiler / linker are you using? What version of Ceedling? What host and version (Windows? Linux? etc) ?

If you really DO have two functions called the same thing, but taking different arguments, then I'm not sure how you're even getting this far. This isn't valid C. C doesn't support this sort of polymorphism the way C++ does.

One final detail I'm noticing in your contrived example (and I suspect this is also just a situation where the example doesn't match the real problem you ran into). You're giving your ExpectAndReturn two arguments, but your function being tested has zero arguments. An ExpectAndReturn will have exactly one more argument (the return) than the original function and it's always the last on the list.

Long story short, this should definitely work. Please post a more complete example of the problem if you'd like further help. We're happy to support you. :)