[flang][runtime] Fix RU/RD results when rounding to least nonzero #75878
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✅ With the latest revision this PR passed the C/C++ code formatter. |
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.
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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.