From: Simon Wright <simon@pushface.org>
Subject: Re: Creating several types from a base type and conversion
Date: Sun, 19 Jan 2020 14:51:36 +0000
Date: 2020-01-19T14:51:36+00:00 [thread overview]
Message-ID: <lyr1zvwlc7.fsf@pushface.org> (raw)
In-Reply-To: 516be7e3-4be3-4697-adb0-9fbde4d5b7e6@googlegroups.com
AdaMagica <christ-usch.grein@t-online.de> writes:
> Am Sonntag, 19. Januar 2020 10:37:21 UTC+1 schrieb Simon Wright:
>> representation clauses where endianness is involved are a lot more
>> confusing than shifts and masks.
>
> See https://en.wikibooks.org/wiki/Ada_Programming/Attributes/%27Bit_Order
>
> This is a complete description of how far we can get with endian
> independence in current Ada. Ada 202x won't change anything in this
> respect.
The description is still, I feel, confusing.
That said, I found this incantation (for an SNTP packet, which is
transmitted in network byte order) works a treat on this LE machine. I
don't have a BE machine to check it on (but the original code was used
on both BE and LE machines).
end record
with
Bit_Order => System.High_Order_First,
Scalar_Storage_Order => System.High_Order_First,
Size => 48 * 8;
next prev parent reply other threads:[~2020-01-19 14:51 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-18 7:32 Creating several types from a base type and conversion Ken Roberts
2020-01-18 12:16 ` Simon Wright
2020-01-18 12:49 ` Ken Roberts
2020-01-18 14:56 ` Bill Findlay
2020-01-18 16:13 ` Jeffrey R. Carter
2020-01-18 18:20 ` Bill Findlay
2020-01-18 18:32 ` Jeffrey R. Carter
2020-01-18 20:34 ` Simon Wright
2020-01-20 16:38 ` Bill Findlay
2020-01-18 22:20 ` Ken Roberts
2020-01-18 15:09 ` Simon Wright
2020-01-18 22:16 ` Ken Roberts
2020-01-18 22:35 ` Simon Wright
2020-01-18 23:03 ` Ken Roberts
2020-01-18 23:38 ` Simon Wright
2020-01-19 0:12 ` Ken Roberts
2020-01-19 9:37 ` Simon Wright
2020-01-19 11:48 ` AdaMagica
2020-01-19 14:51 ` Simon Wright [this message]
2020-01-19 15:24 ` Niklas Holsti
2020-01-19 16:11 ` Optikos
2020-01-19 0:33 ` Ken Roberts
2020-01-19 0:07 ` Niklas Holsti
2020-01-18 15:47 ` Simon Wright
2020-01-21 21:35 ` Shark8
2020-01-21 23:06 ` Niklas Holsti
2020-01-22 1:08 ` Ken Roberts
2020-01-22 14:18 ` Ken Roberts
2020-01-22 8:37 ` Simon Wright
2020-01-22 14:32 ` Shark8
2020-01-22 15:40 ` Simon Wright
2020-01-18 14:17 ` Optikos
2020-01-18 17:57 ` Niklas Holsti
2020-01-18 22:59 ` Ken Roberts
2020-01-19 0:30 ` Niklas Holsti
2020-01-19 1:07 ` Ken Roberts
2020-01-19 3:37 ` Ken Roberts
2020-01-23 21:39 ` Optikos
2020-01-24 9:35 ` Ken Roberts
2020-01-24 10:04 ` AdaMagica
2020-01-24 12:38 ` Optikos
2020-01-24 15:01 ` Ken Roberts
2020-01-24 15:22 ` Simon Wright
2020-01-24 15:40 ` Ken Roberts
2020-01-24 15:54 ` Simon Wright
2020-01-25 10:37 ` Ken Roberts
2020-01-25 10:44 ` Ken Roberts
2020-01-25 20:26 ` Shark8
2020-01-27 14:10 ` Ken Roberts
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