Function dot3

examples/pde/bhrt.cpp:123–125

* @brief Returns the euclidean dot product for two cartesian vectors with 3 * coords * * @param lhs * @param rhs * @return af::array */

 * @return af::array
 */
af::array dot3(const af::array& lhs, const af::array& rhs) {
    return af::sum(lhs * rhs, 0);
}

/**
 * @brief Returns the euclidean norm for a cartesian vector with 3 coords