From: Andreas Schwab <schwab@suse.de>
To: Laurent Vivier <laurent@vivier.eu>
Cc: Peter Maydell <peter.maydell@linaro.org>,
philmd@redhat.com, qemu-devel@nongnu.org,
KONRAD Frederic <frederic.konrad@adacore.com>,
Pierre Muller <pierre@freepascal.org>,
alex.bennee@linaro.org, Aurelien Jarno <aurelien@aurel32.net>
Subject: Re: [PATCH 1/2] softfloat: m68k: infinity is a valid encoding
Date: Mon, 13 Jul 2020 12:01:14 +0200 [thread overview]
Message-ID: <mvm365v91jp.fsf@suse.de> (raw)
In-Reply-To: <55a6feb0-38ba-432f-82cb-06c5694c325a@vivier.eu> (Laurent Vivier's message of "Wed, 29 Apr 2020 10:42:20 +0200")
On Apr 29 2020, Laurent Vivier wrote:
> "Since the extended-precision data format has an explicit integer bit, a
> number can be formatted with a nonzero exponent, less than the maximum
> value, and a zero integer bit. The IEEE 754 standard does not define a
> zero integer bit. Such a number is an unnormalized number. Hardware does
> not directly support denormalized and unnormalized numbers, but
> implicitly supports them by trapping them as unimplemented data types,
> allowing efficient conversion in software."
This is supposed to be handled transparently by fpsp040, to be
compatible with the 68881.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
next prev parent reply other threads:[~2020-07-13 10:02 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-28 17:17 [PATCH 0/2] m68k fpu fixes KONRAD Frederic
2020-04-28 17:17 ` [PATCH 1/2] softfloat: m68k: infinity is a valid encoding KONRAD Frederic
2020-04-28 18:43 ` Alex Bennée
2020-04-29 8:48 ` Laurent Vivier
2020-04-29 9:26 ` Alex Bennée
2020-04-29 9:43 ` Laurent Vivier
2020-04-29 10:22 ` Alex Bennée
2020-04-29 14:27 ` Laurent Vivier
2020-04-29 20:51 ` Alex Bennée
2020-04-29 8:42 ` Laurent Vivier
2020-04-29 12:33 ` KONRAD Frederic
2020-07-13 10:01 ` Andreas Schwab [this message]
2020-06-12 8:31 ` Laurent Vivier
2020-06-15 15:59 ` Fred Konrad
2020-06-15 16:46 ` Laurent Vivier
2020-04-28 17:17 ` [PATCH 2/2] target/m68k: fix gdb for m68xxx KONRAD Frederic
2020-04-29 8:57 ` Laurent Vivier
2020-04-29 9:28 ` Alex Bennée
2020-04-29 9:38 ` Laurent Vivier
2020-04-29 12:25 ` KONRAD Frederic
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