From: Simon Wright <simon@pushface.org>
Subject: Re: Ada decimal types
Date: Wed, 10 May 2006 06:37:46 +0100
Date: 2006-05-10T06:37:46+01:00 [thread overview]
Message-ID: <m264kecudx.fsf@grendel.local> (raw)
In-Reply-To: Bt98g.12442$TT.8340@twister.nyroc.rr.com
"REH" <me@you.com> writes:
> "Randy Brukardt" <randy@rrsoftware.com> wrote in message
> news:8KadnYXCB-5FKMLZnZ2dneKdnZydnZ2d@megapath.net...
>> You're still very confused. Semantically, there is no difference between
>>
>> type Mission_Time_Type is delta 1.0e-6 range 0.0 .. (2.0**32) - 1.0;
>> for Mission_Time_Type'Small use 1.0e-6;
>>
>> and
>>
>> type Mission_Time_Type is delta 1.0e-6 digits 14;
>
> Why is there not a difference? Won't the first actually use some negative
> power-of-2 as the delta?
The LRM 3.5.10(2) is a good deal less than informative as to what this
_Small_ might be. But unless I have been totally wrong all this time
it specifies the value of the LSB of the type.
So for Randy's example, if you do an unchecked conversion of
Mission_Type_Time'(1.5) to a long integer, the result would be
1_500_000.
And if you did the same for a GNAT Duration'(1.5) -- remember, its
'Small is 1e-9) -- you would get 1_500_000_000.
next prev parent reply other threads:[~2006-05-10 5:37 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-04 15:23 Ada decimal types REH
2006-05-04 18:17 ` Jeffrey R. Carter
2006-05-04 22:20 ` REH
2006-05-05 9:14 ` Stephen Leake
2006-05-05 11:33 ` REH
2006-05-05 16:49 ` tmoran
2006-05-05 18:08 ` REH
2006-05-05 18:49 ` tmoran
2006-05-05 18:59 ` REH
2006-05-06 8:59 ` Keith Thompson
2006-05-06 14:01 ` REH
2006-05-06 15:48 ` Simon Wright
2006-05-06 16:39 ` REH
2006-05-08 21:19 ` Randy Brukardt
2006-05-09 23:21 ` REH
2006-05-10 1:08 ` Keith Thompson
2006-05-10 5:37 ` Simon Wright [this message]
2006-05-10 12:22 ` REH
2006-05-10 20:47 ` Randy Brukardt
2006-05-10 21:26 ` REH
2006-05-10 20:52 ` Randy Brukardt
2006-05-11 5:51 ` Simon Wright
2006-05-11 22:33 ` Randy Brukardt
2006-05-05 20:32 ` Randy Brukardt
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