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[MXFP4] Patch fp4_utils.py rounding logic following #975#2249

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[MXFP4] Patch fp4_utils.py rounding logic following #975#2249
Knarf04 wants to merge 1 commit intoROCm:mainfrom
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@Knarf04 Knarf04 commented Mar 11, 2026

Fix #2247
Copying exact rounding fix & test from #957 to fp4_utils.py

@Knarf04 Knarf04 requested a review from a team March 11, 2026 07:29
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Knarf04 commented Mar 11, 2026

@danielhua23 @valarLip

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Hi @valarLip this is a potential bug found by community developer, could you pls help review?

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[Issue]: Incorrect MXFP4 mantissa rounding in fp4_utils.py

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