When rounding what otherwise would have been a result that underflowed to zero up (RU) or down (RD) to the least magnitude nonzero subnormal number, ensure that the original exponent value doesn't perturb the result.
When rounding what otherwise would have been a result that underflowed to zero up (RU) or down (RD) to the least magnitude nonzero subnormal number, ensure that the original exponent value doesn't perturb the result.