Function atan2

extern/half/include/half.hpp:2464–2464

Arc tangent function. \param x first argument \param y second argument \return arc tangent value template typename enable ::type atan2(T x, U y) { return functions::atan2(x, y); }

		/// \return arc tangent value
//		template<typename T,typename U> typename enable<expr,T,U>::type atan2(T x, U y) { return functions::atan2(x, y); }
		inline expr atan2(half x, half y) { return functions::atan2(x, y); }
		inline expr atan2(half x, expr y) { return functions::atan2(x, y); }
		inline expr atan2(expr x, half y) { return functions::atan2(x, y); }
		inline expr atan2(expr x, expr y) { return functions::atan2(x, y); }