4903 bool inputLess (const T& val1, const T& val2)  in inputLess()  function
4928 			if (inputLess(vec1[ndx], vec2[ndx]))  in operator ()()
4930 			if (inputLess(vec2[ndx], vec1[ndx]))  in operator ()()
4946 			if (inputLess(mat1[col], mat2[col]))  in operator ()()
4948 			if (inputLess(mat2[col], mat1[col]))  in operator ()()
4973 		if (inputLess(in1.a, in2.a))  in operator ()()
4975 		if (inputLess(in2.a, in1.a))  in operator ()()
4977 		if (inputLess(in1.b, in2.b))  in operator ()()
4979 		if (inputLess(in2.b, in1.b))  in operator ()()
4981 		if (inputLess(in1.c, in2.c))  in operator ()()
4983 		if (inputLess(in2.c, in1.c))  in operator ()()
4985 		if (inputLess(in1.d, in2.d))  in operator ()()