diff --git a/sprout/math/atan2.hpp b/sprout/math/atan2.hpp
new file mode 100644
index 00000000..897f68ad
--- /dev/null
+++ b/sprout/math/atan2.hpp
@@ -0,0 +1,91 @@
+#ifndef SPROUT_MATH_ATAN2_HPP
+#define SPROUT_MATH_ATAN2_HPP
+
+#include <type_traits>
+#include <sprout/config.hpp>
+#include <sprout/math/atan.hpp>
+#include <sprout/math/constants.hpp>
+#include <sprout/utility/enabler_if.hpp>
+#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
+#	include <cmath>
+#endif
+
+namespace sprout {
+	namespace math {
+		namespace detail {
+			template<typename Y, typename X, typename Enable = void>
+			struct atan2_promoted {};
+			template<typename Y, typename X>
+			struct atan2_promoted<
+				Y,
+				X,
+				typename std::enable_if<
+					std::is_arithmetic<Y>::value && std::is_arithmetic<X>::value
+						&& (std::is_same<Y, long double>::value || std::is_same<X, long double>::value)
+				>::type
+			> {
+			public:
+				typedef long double type;
+			};
+			template<typename Y, typename X>
+			struct atan2_promoted<
+				Y,
+				X,
+				typename std::enable_if<
+					std::is_arithmetic<Y>::value && std::is_arithmetic<X>::value
+						&& !(std::is_same<Y, long double>::value || std::is_same<X, long double>::value)
+				>::type
+			> {
+			public:
+				typedef double type;
+			};
+		}	// namespace detail
+		//
+		// atan2_promoted
+		//
+		template<typename Y, typename X>
+		struct atan2_promoted
+			: public sprout::math::detail::atan2_promoted<
+				typename std::remove_cv<Y>::type,
+				typename std::remove_cv<X>::type
+			>
+		{};
+
+		namespace detail {
+			template<
+				typename FloatType,
+				typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
+			>
+			inline SPROUT_CONSTEXPR FloatType
+			atan2(FloatType y, FloatType x) {
+				return x < 0
+					? sprout::math::detail::atan(y / x) + (y < 0 ? -1 : 1) * sprout::math::pi<FloatType>()
+					: sprout::math::detail::atan(y / x)
+					;
+			}
+
+			template<
+				typename ArithmeticType1,
+				typename ArithmeticType2,
+				typename sprout::enabler_if<
+					std::is_arithmetic<ArithmeticType1>::value && std::is_arithmetic<ArithmeticType2>::value
+				>::type = sprout::enabler
+			>
+			inline SPROUT_CONSTEXPR typename sprout::math::atan2_promoted<ArithmeticType1, ArithmeticType2>::type
+			atan2(ArithmeticType1 y, ArithmeticType2 x) {
+				typedef typename sprout::math::atan2_promoted<ArithmeticType1, ArithmeticType2>::type type;
+				return sprout::math::detail::atan2(static_cast<type>(y), static_cast<type>(x));
+			}
+		}	// namespace detail
+
+#	if SPROUT_USE_BUILTIN_CMATH_FUNCTION
+		using std::atan2;
+#	else
+		using sprout::math::detail::atan2;
+#	endif
+	}	// namespace math
+
+	using sprout::math::atan2;
+}	// namespace sprout
+
+#endif	// #ifndef SPROUT_MATH_ATAN2_HPP
diff --git a/sprout/math/trigonometric.hpp b/sprout/math/trigonometric.hpp
index 299062a1..70185ef0 100644
--- a/sprout/math/trigonometric.hpp
+++ b/sprout/math/trigonometric.hpp
@@ -7,5 +7,6 @@
 #include <sprout/math/asin.hpp>
 #include <sprout/math/acos.hpp>
 #include <sprout/math/atan.hpp>
+#include <sprout/math/atan2.hpp>
 
 #endif	// #ifndef SPROUT_MATH_TRIGONOMETRIC_HPP