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Date: Tue, 14 Jan 2020 19:47:52 +0100
From: Szabolcs Nagy <>
Subject: Re: [PATCH] math: move i386 sqrtf to C

* Alexander Monakov <> [2020-01-14 20:59:21 +0300]:
> On Thu, 9 Jan 2020, Szabolcs Nagy wrote:
> > c99 required cast at return, but that was considered to be
> > a bug so in c11 it's no longer required: return now must
> > round
> This is the interpretation that GCC uses (return statements
> imply removal of excess precision), but I wonder where the
> standard actually says that: afaics N1570 still has the same
> footnote in that ends with "A cast may be used to
> remove this extra range and precision."

it's in annex f

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