narrowing conversion of '(5.0e-1 * ((double)((e1.std::array<float, 3>::operator[](1) * e2.std::array<float, 3>::operator[](2)) - (e1.std::array<float, 3>::operator[](2) * e2.std::array<float, 3>::operator[](1)))))' from 'double' to 'float' [-Wnarrowing]

narrowing conversion of '(5.0e-1 * ((double)((e1.std::array<float, 3>::operator[](2) * e2.std::array<float, 3>::operator[](0)) - (e1.std::array<float, 3>::operator[](0) * e2.std::array<float, 3>::operator[](2)))))' from 'double' to 'float' [-Wnarrowing]

narrowing conversion of '(5.0e-1 * ((double)((e1.std::array<float, 3>::operator[](0) * e2.std::array<float, 3>::operator[](1)) - (e1.std::array<float, 3>::operator[](1) * e2.std::array<float, 3>::operator[](0)))))' from 'double' to 'float' [-Wnarrowing]

narrowing conversion of '(((double)((((std::array<float, 3>::value_type)(& a)->std::array<float, 3>::operator[](0)) + ((std::array<float, 3>::value_type)(& b)->std::array<float, 3>::operator[](0))) + ((std::array<float, 3>::value_type)(& c)->std::array<float, 3>::operator[](0)))) / 3.0e+0)' from 'double' to 'float' [-Wnarrowing]

narrowing conversion of '(((double)((((std::array<float, 3>::value_type)(& a)->std::array<float, 3>::operator[](1)) + ((std::array<float, 3>::value_type)(& b)->std::array<float, 3>::operator[](1))) + ((std::array<float, 3>::value_type)(& c)->std::array<float, 3>::operator[](1)))) / 3.0e+0)' from 'double' to 'float' [-Wnarrowing]