I don't see how that would do anything. The comma operator is basically just used to create an evaluation list in a statement. For instance in a for statement, you could do:
Code:
for(i = 0, j = 10; i < j; ++i, --j)
This would do as you expected. Assign 0 to i and 10 to j and loop incrementing i and decrementing j until i => j.
The comma operator, I believe returns the result. Which, unless you put it somewhere, gets discarded. In the case of your statement above, it should act no differently than
Code:
if(int1 | int2 | int3 == int4)
You can test it yourself
Code:
if((1,2) == 3)
std::cout << "if((1,2) == 3) is True!";
if((1,2,3) == 3)
std::cout << "if((1,2,3) == 3) is True!";
if((1,2,3,4) == 3)
std::cout << "if((1,2,3,4) == 3) is True!";
I could be wrong, though. There might be something else going on there that I'm not seeing. I don't think so, though.