Method exp2

extern/half/include/half.hpp:1397–1404

Binary exponential implementation. \param arg function argument \return function value stored in single-preicision

			/// \param arg function argument
			/// \return function value stored in single-preicision
			static expr exp2(float arg)
			{
			#if HALF_ENABLE_CPP11_CMATH
				return expr(std::exp2(arg));
			#else
				return expr(static_cast<float>(std::exp(arg*0.69314718055994530941723212145818)));
			#endif
			}

			/// Logarithm implementation.
			/// \param arg function argument