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Re: [Qemu-devel] [PATCH v2] softfloat: add float128_is_{normal, denormal
From: |
Alex Bennée |
Subject: |
Re: [Qemu-devel] [PATCH v2] softfloat: add float128_is_{normal, denormal} |
Date: |
Wed, 06 Feb 2019 14:25:06 +0000 |
User-agent: |
mu4e 1.0; emacs 26.1 |
David Hildenbrand <address@hidden> writes:
> Needed on s390x, to test for the data class of a number. So it will
> gain soon a user.
>
> A number is considered normal if the exponent is neither 0 nor all 1's.
> That can be checked by adding 1 to the exponent, and comparing against
>>= 2 after dropping an eventual overflow into the sign bit.
>
> While at it, convert the other floatXX_is_normal functions to use a
> similar, less error prone calculation, as suggested by Richard H.
Queued to fpu/next, thanks.
--
Alex Bennée