T(RN, inf, inf, 0x0p+0, 0)
T(RN, -inf, -0x1p+0, 0x0p+0, 0)
T(RN, nan, nan, 0x0p+0, 0)
+T(RN, 0x1.ffffffffffffep-1023, 0x1.ffffffffffffep-1023, 0x0p+0, INEXACT|UNDERFLOW)
+T(RN,-0x1.ffffffffffffep-1023,-0x1.ffffffffffffep-1023, 0x0p+0, INEXACT|UNDERFLOW)