vtk-m/CMake/CheckCXX11Features/cxx11-test-constexpr.cpp

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constexpr int square(int x)
{
return x*x;
}
constexpr int the_answer()
{
return 42;
}
int main()
{
int test_arr[square(3)];
bool ret = (
(square(the_answer()) == 1764) &&
(sizeof(test_arr)/sizeof(test_arr[0]) == 9)
);
return ret ? 0 : 1;
}