#include <ElementIntegrator.hpp>
Gaussian integrator on the interval [-1, 1]. IntervalIntegrator<1> is used as element integrator in fem_1d_types and as boundary element integrator in fem_2d_square_types and fem_2d_triangle_types. IntervalIntegrator is currently implemented for N_NODES = 1, 2. You will rarely use this class directly, but might plug it into your own FE traits class as integrator_t or boundary_integrator_t.