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Date: Tue, 14 Jan 2020 21:17:55 +0300 (MSK)
From: Alexander Monakov <amonakov@...ras.ru>
To: musl@...ts.openwall.com
Subject: Q: dealing with missing removal of excess precision
What to do with functions that return values with excess precision from asm?
Many of the remaining x87-based asm implementations do not remove excess
precision on return. This looks like a bug, but matches Glibc behavior.
Moving such functions to C would either introduce removal of excess precision,
or result in code that lies to the compiler by pretending that inline asm keeps
values within precision of float/double, where in reality it might not.
Alexander
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