Method log

extern/half/include/half.hpp:1409–1409

Logarithm 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 log(float arg) { return expr(std::log(arg)); }

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