Re: return value in CINT

Hello Axel,

Thanks a lot again. It is perfect for my purpose. It seems to be the most straightforward idea.

Regards,

--
OKUMURA, Akira oxon@{astro.isas.jaxa.jp,stanford.edu}
Institute of Space and Astronautical Science (ISAS/JAXA)
Now at KIPAC/SLAC/Stanford
Varian Physics #306, 382 Via Pueblo Mall, MC 4060
Stanford, CA 94305-4060
TEL 650-736-0971/FAX 650-724-5065
Skype : okumura.akira

On 2011/05/25, at 6:57, Axel Naumann wrote:

> Hi,
> 
> Long_t works, too. Otherwise use this approach:
> 
> Say your function returns an object of class MyClass:
> 
> MyClass func()
> 
> Then you would invoke it like
> 
> MyClass returnedObj;
> TString expr = TString::Format("*(MyClass*)%p = func();",
> (void*)&returnedObj);
> gInterpreter->ProcessLine(expr);
> 
> Cheers, Axel.
> 
> OKUMURA, Akira wrote on 05/25/2011 03:13 PM:
>> Hello Axel,
>> 
>> Thank you. It works perfect for Int_t, but can I get other types or classes?
>> 
>> Regards,
>> 
>> --
>> OKUMURA, Akira oxon@{astro.isas.jaxa.jp,stanford.edu}
>> Institute of Space and Astronautical Science (ISAS/JAXA)
>> Now at KIPAC/SLAC/Stanford
>> Varian Physics #306, 382 Via Pueblo Mall, MC 4060
>> Stanford, CA 94305-4060
>> TEL 650-736-0971/FAX 650-724-5065
>> Skype : okumura.akira
>> 
>> On 2011/05/25, at 5:49, Axel Naumann wrote:
>> 
>>> Hi Akira,
>>> 
>>> use
>>> 
>>> gROOT->LoadMacro("MyMacro.C++"); // this macro contains Int_t MyFunc()
>>> Int_t n = gInterpreter->ProcessLine("MyFunc()");
>>> 
>>> Cheers, Axel.
>>> 
>>> 
>>> OKUMURA, Akira wrote on 05/25/2011 04:52 AM:


>>>> Hello ROOTers,

>>>> 

>>>> I would like to know if there is any way to get the return value of a function which is loaded via TROOT::LoadMacro in a compiled code.

>>>> 

>>>> Below is my conceptual code to be compiled by g++.

>>>> 

>>>> int main()

>>>> {

>>>> (snip)

>>>> gROOT->LoadMacro("MyMacro.C++"); // this macro contains Int_t MyFunc()

>>>> Int_t n = MyFunc(); // How can I do this?

>>>> (snip)

>>>> }

>>>> 

>>>> I would like to use MyMacro.C as a configuration file of the main program. The algorithm inside MyFunc() changes in each MyMacro.C. For example,

>>>> 

>>>> --- MyMacro1.C ---

>>>> Int_t MyFunc()

>>>> {

>>>> return 1;

>>>> }

>>>> 

>>>> --- MyMacro2.C ---

>>>> Int_t MyFunc()

>>>> {

>>>> return 2;

>>>> }

>>>> 

>>>> Regards,

>>>> 

>>>> --

>>>> OKUMURA, Akira oxon@{astro.isas.jaxa.jp,stanford.edu}

>>>> Institute of Space and Astronautical Science (ISAS/JAXA)

>>>> Now at KIPAC/SLAC/Stanford

>>>> Varian Physics #306, 382 Via Pueblo Mall, MC 4060

>>>> Stanford, CA 94305-4060

>>>> TEL 650-736-0971/FAX 650-724-5065

>>>> Skype : okumura.akira

>>>> 

>>>> 

>>>> 

>>>> 

>>>> Regards,

>>>> 

>>>> --

>>>> OKUMURA, Akira oxon@{astro.isas.jaxa.jp,stanford.edu}

>>>> Institute of Space and Astronautical Science (ISAS/JAXA)

>>>> Now at KIPAC/SLAC/Stanford

>>>> Varian Physics #306, 382 Via Pueblo Mall, MC 4060

>>>> Stanford, CA 94305-4060

>>>> TEL 650-736-0971/FAX 650-724-5065

>>>> Skype : okumura.akira

>>>> 

>>>> 

>> 
>>