-static const ieee_descriptor_t single_desc = { 8, 23, 0, NORMAL };
-static const ieee_descriptor_t double_desc = { 11, 52, 0, NORMAL };
-static const ieee_descriptor_t extended_desc = { 15, 63, 1, NORMAL };
+/** IEEE-754r half precision */
+static const ieee_descriptor_t half_desc = { 5, 10, 0, NORMAL };
+/** IEEE-754 single precision */
+static const ieee_descriptor_t single_desc = { 8, 23, 0, NORMAL };
+/** IEEE-754 double precision */
+static const ieee_descriptor_t double_desc = { 11, 52, 0, NORMAL };
+/** Intel x87 extended precision */
+static const ieee_descriptor_t extended_desc = { 15, 63, 1, NORMAL };
+
+/** IEEE-754r quad precision */
+static const ieee_descriptor_t quad_desc = { 15, 112, 0, NORMAL };