-- --
-- B o d y --
-- --
--- Copyright (C) 1992-2008, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
+-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
--- Boston, MA 02110-1301, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception, --
+-- version 3.1, as published by the Free Software Foundation. --
+-- --
+-- You should have received a copy of the GNU General Public License and --
+-- a copy of the GCC Runtime Library Exception along with this program; --
+-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
+-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
Expon : Integer;
-- Integer value of exponent
- procedure Round (N : Natural);
+ procedure Round (N : Integer);
-- Round the number in Digs. N is the position of the last digit to be
-- retained in the rounded position (rounding is based on Digs (N + 1)
-- FD, LD, ND are reset as necessary if required. Note that if the
-- result value rounds up (e.g. 9.99 => 10.0), an extra digit can be
-- placed in the sign position as a result of the rounding, this is
- -- the case in which FD is adjusted.
+ -- the case in which FD is adjusted. The call to Round has no effect
+ -- if N is outside the range FD .. LD.
procedure Set (C : Character);
pragma Inline (Set);
-- Round --
-----------
- procedure Round (N : Natural) is
+ procedure Round (N : Integer) is
D : Character;
begin
- -- Nothing to do if rounding at or past last digit
+ -- Nothing to do if rounding past the last digit we have
if N >= LD then
return;
-- exception is for the value zero, which by convention has an
-- exponent of +0.
- if Zero then
- Expon := 0;
- else
- Expon := Digits_Before_Point - 1;
- end if;
-
+ Expon := (if Zero then 0 else Digits_Before_Point - 1);
Set ('E');
ND := 0;
Set_Blanks_And_Sign (Fore - 1);
Set ('0');
Set ('.');
- Set_Zeroes (-Digits_Before_Point);
- Set_Digits (FD, LD);
- Set_Zeroes (Digits_After_Point - Scale);
+
+ declare
+ DA : Natural := Digits_After_Point;
+ -- Digits remaining to output after point
+
+ LZ : constant Integer :=
+ Integer'Max (0, Integer'Min (DA, -Digits_Before_Point));
+ -- Number of leading zeroes after point
+
+ begin
+ Set_Zeroes (LZ);
+ DA := DA - LZ;
+
+ if DA < ND then
+ Set_Digits (FD, FD + DA - 1);
+
+ else
+ Set_Digits (FD, LD);
+ Set_Zeroes (DA - ND);
+ end if;
+ end;
-- At least one digit before point in input
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