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From: "glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/96804] Arguments are swapped in floating-point addition
Date: Wed, 26 Aug 2020 17:47:39 +0000	[thread overview]
Message-ID: <bug-96804-4-3qgR0p0Z6g@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-96804-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96804

--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Paweł Bylica from comment #0)
> This is a problem because when both arguments are NaNs, the result may be
> different than the one predicted by IEEE 754.

Could you quote the sentence in IEEE 754 that you believe is violated? As far
as I can tell, the order doesn't matter:

"For an operation with quiet NaN inputs, other than maximum and minimum
operations, if a floating-point result is to be delivered the result shall be a
quiet NaN which should be one of the input NaNs."

  parent reply	other threads:[~2020-08-26 17:47 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-26 17:38 [Bug c/96804] New: " chfast at gmail dot com
2020-08-26 17:38 ` [Bug c/96804] " chfast at gmail dot com
2020-08-26 17:47 ` glisse at gcc dot gnu.org [this message]
2020-08-26 17:59 ` chfast at gmail dot com
2020-08-26 22:51 ` [Bug target/96804] " joseph at codesourcery dot com
2020-08-27  6:13 ` rguenth at gcc dot gnu.org

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