Method erfc

extern/half/include/half.hpp:1582–1589

Complementary 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 erfc(float arg)
			{
			#if HALF_ENABLE_CPP11_CMATH
				return expr(std::erfc(arg));
			#else
				return expr(static_cast<float>(1.0-erf(static_cast<double>(arg))));
			#endif
			}

			/// Gamma logarithm implementation.
			/// \param arg function argument