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Newsgroups: comp.lang.ada
Subject: Re: Q: Portable Ada floating-point binary I/O ?
References: <44f09ac3$1_3@news.bluewin.ch>
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From: Stephen Leake <stephen_leake@stephe-leake.org>
Date: Mon, 28 Aug 2006 07:55:12 -0400
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Date: 2006-08-28T07:55:12-04:00
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Gautier <gautier@fakeaddress.nil> writes:

>  > However, the problem is - what does "portable" mean here? Range and
>  > precision cannot be portable, unless types aren't communicated as well.
>
> In my case, it should not be a problem; I have a deterministic file
> format with some items expected as GL.Double, others as GL.Float. I
> just want to ensure that the same file will be correctly read by a PC,
> a Mac or a Playstation.

Those are all IEEE hardware, so all you need is byte-endianness
conversions. See SAL http://stephe-leake.org/ada/sal.html for that, in
particular sal-endianness_gnat_x86.ads, sal-network_order.ads, and
sal-math_float-network_order.ads.

-- 
-- Stephe