Date: Thu, 25 Aug 2016 08:28:06 +0100 From: Arthur Chance <freebsd@qeng-ho.org> To: "Kevin P. Neal" <kpn@neutralgood.org>, Anton Shterenlikht <mexas@bris.ac.uk> Cc: freebsd-questions@freebsd.org Subject: Re: ieee 754 and p854 Message-ID: <721affab-7b9f-f366-c046-d594be36bce1@qeng-ho.org> In-Reply-To: <20160825002404.GA95876@neutralgood.org> References: <201608241648.u7OGmRCj084423@mech-as222.men.bris.ac.uk> <20160825002404.GA95876@neutralgood.org>
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On 25/08/2016 01:24, Kevin P. Neal wrote: > On Wed, Aug 24, 2016 at 05:48:27PM +0100, Anton Shterenlikht wrote: >> ieee(3) and many older sources mention p854 as >> an extension to standard 754. I cannot find >> any trace of p854 past 1985. Has it been obsoleted >> by the development of 754? > > Wasn't 854 base 10? I have a vague memory that 854 was incorporated into > the 2008 revision of 754. > > There's probably more if you care to wade through it: > https://en.wikipedia.org/wiki/IEEE_754_revision > >From https://en.wikipedia.org/wiki/IEEE_854-1987 The standard was published in 1987, nearly immediately superseded by IEEE 754-1985 but never terminated (the year of ratification appears after the dash). IEEE 854 did not specify any formats, whereas IEEE 754-1985 did. Sounds like 854 was a bit of a false start and/or duplicate effort. -- Schrödinger's cat had 18 half lives.
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