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Update NaNs handling description in c-api/float.rst (#141179)

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Clarified the behavior of NaNs on IEEE platforms regarding signaling and quiet NaNs.
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W. H. Wang 2025-11-07 21:34:49 +08:00 • committed by GitHub
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@ -113,8 +113,8 @@ NaNs (if such things exist on the platform) isn't handled correctly, and
attempting to unpack a bytes string containing an IEEE INF or NaN will raise an attempting to unpack a bytes string containing an IEEE INF or NaN will raise an
exception. exception.
Note that NaNs type may not be preserved on IEEE platforms (silent NaN become Note that NaNs type may not be preserved on IEEE platforms (signaling NaN become
quiet), for example on x86 systems in 32-bit mode. quiet NaN), for example on x86 systems in 32-bit mode.
On non-IEEE platforms with more precision, or larger dynamic range, than IEEE On non-IEEE platforms with more precision, or larger dynamic range, than IEEE
754 supports, not all values can be packed; on non-IEEE platforms with less 754 supports, not all values can be packed; on non-IEEE platforms with less