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Re: [Qemu-devel] [PATCH v2 00/16] target-m68k: implement 680x0 FPU

From: Andreas Schwab
Subject: Re: [Qemu-devel] [PATCH v2 00/16] target-m68k: implement 680x0 FPU
Date: Mon, 30 Jan 2017 19:44:12 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.91 (gnu/linux)

On Jan 30 2017, Laurent Vivier <address@hidden> wrote:

> The floatx80 datatype used here is not exactly the same as the
> one used by 680x0 for its extended precision data type, because
> normally the signaling bit of 680x0 NAN is the MSB of the mantissa
> minus one and in floatx80 it is the MSB.

An Intel Extended also has a different exponent bias than a Motorola
Extended in the denormal range.  In other words, for the latter the bias
doesn't change between normal and denormal numbers.


Andreas Schwab, address@hidden
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