ternary_1.cpp 213 Bytes

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#include "../Eigen/Core"
using namespace Eigen;

int main(int argc,char **)
{
  VectorXf a(10), b(10);
#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
  b = argc>1 ? 2*a : -a;
#else
  b = argc>1 ? 2*a : VectorXf(-a);
#endif
}