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From: "dewi dot daniels at silver-software dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/29462]  New: Sign ignored on fixed point multiplication
Date: Fri, 13 Oct 2006 17:43:00 -0000	[thread overview]
Message-ID: <bug-29462-12922@http.gcc.gnu.org/bugzilla/> (raw)

The sign seems to be ignored when multiplying a named number with a fixed point
value.  Converting the named number to a fixed point type seems to work around
the problem.  See the example below:

with Ada.Text_IO;
procedure Test
is
   type T is delta 0.1 range -1.0 .. 1.0;
   X : constant := -1.0;
   Y : T;
   package T_IO is new Ada.Text_IO.Fixed_IO (T);
begin
   Ada.Text_IO.Put ("X = "); T_IO.Put (X); Ada.Text_IO.New_Line;
   Y := -1.0;
   Ada.Text_IO.Put ("Y = "); T_IO.Put (Y); Ada.Text_IO.New_Line;
   Ada.Text_IO.Put ("X * Y = "); T_IO.Put (X * Y); Ada.Text_IO.New_Line;
   Ada.Text_IO.Put ("T (X) * Y = "); T_IO.Put (T (X) * Y);
Ada.Text_IO.New_Line;
end Test;


-- 
           Summary: Sign ignored on fixed point multiplication
           Product: gcc
           Version: 3.4.5
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dewi dot daniels at silver-software dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29462


             reply	other threads:[~2006-10-13 17:43 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-10-13 17:43 dewi dot daniels at silver-software dot com [this message]
2006-10-13 21:34 ` [Bug ada/29462] " laurent at guerby dot net
2007-05-02 12:21 ` charlet at gcc dot gnu dot org
2007-05-02 14:48 ` dewi dot daniels at silver-software dot com

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