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Imports of ffast-math compiled extensions change global FPU state #37

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vovaf709 opened this issue Sep 10, 2023 · 2 comments
Open

Imports of ffast-math compiled extensions change global FPU state #37

vovaf709 opened this issue Sep 10, 2023 · 2 comments
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vovaf709 commented Sep 10, 2023 •
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For example import imops breaks floating point subnormals flushing them to 0:

import sys
sys.float_info.min / 2 != 0.0  # True

import imops
sys.float_info.min / 2 != 0.0  # False
@vovaf709 vovaf709 added the bug Something isn't working label Sep 10, 2023
@vovaf709 vovaf709 self-assigned this Sep 10, 2023
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llvm/llvm-project#57589

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https://moyix.blogspot.com/2022/09/someones-been-messing-with-my-subnormals.html

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