Function frexp

dnn/include/megdnn/dtype/half.hpp:2547–2547

Decompress floating point number. \param arg number to decompress \param exp address to store exponent at \return significant in range [0.5, 1) template typename enable ::type frexp(T arg, int *exp) { return functions::frexp(arg, exp); }

		/// \return significant in range [0.5, 1)
//		template<typename T> typename enable<half,T>::type frexp(T arg, int *exp) { return functions::frexp(arg, exp); }
        MEGDNN_HOST MEGDNN_DEVICE inline half frexp(half arg, int *exp) { return functions::frexp(arg, exp); }
        MEGDNN_HOST MEGDNN_DEVICE inline half frexp(expr arg, int *exp) { return functions::frexp(arg, exp); }

		/// Multiply by power of two.