New Language: Ada

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45957 138bc75d-0d04-0410-961f-82ee72b054a4

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUNTIME COMPONENTS                          --
+--                                                                          --
+--                       S Y S T E M . I M G _ D E C                        --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                            $Revision: 1.6 $
+--                                                                          --
+--          Copyright (C) 1992-2000 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- --
+-- 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,  59 Temple Place - Suite 330,  Boston, --
+-- MA 02111-1307, USA.                                                      --
+--                                                                          --
+-- 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.                                      --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  Image for decimal fixed types where the size of the corresponding integer
+--  type does not exceed Integer'Size (also used for Text_IO.Decimal_IO output)
+
+package System.Img_Dec is
+pragma Preelaborate (Img_Dec);
+
+   function Image_Decimal
+     (V     : Integer;
+      Scale : Integer)
+      return  String;
+   --  Compute 'Image of V, the integer value (in units of delta) of a decimal
+   --  type whose Scale is as given and return the result. THe image is given
+   --  by the rules in RM 3.5(34) for fixed-point type image functions.
+
+   procedure Set_Image_Decimal
+     (V     : Integer;
+      S     : out String;
+      P     : in out Natural;
+      Scale : Integer;
+      Fore  : Natural;
+      Aft   : Natural;
+      Exp   : Natural);
+   --  Sets the image of V, where V is the integer value (in units of delta)
+   --  of a decimal type with the given Scale, starting at S (P + 1), updating
+   --  P to point to the last character stored, the caller promises that the
+   --  buffer is large enough and no check is made for this. Constraint_Error
+   --  will not necessarily be raised if this requirement is violated, since
+   --  it is perfectly valid to compile this unit with checks off. The Fore,
+   --  Aft and Exp values can be set to any valid values for the case of use
+   --  by Text_IO.Decimal_IO.
+
+   procedure Set_Decimal_Digits
+     (Digs  : in out String;
+      NDigs : Natural;
+      S     : out String;
+      P     : in out Natural;
+      Scale : Integer;
+      Fore  : Natural;
+      Aft   : Natural;
+      Exp   : Natural);
+   --  This procedure has the same semantics as Set_Image_Decimal, except that
+   --  the value in Digs (1 .. NDigs) is given as a string of decimal digits
+   --  preceded by either a minus sign or a space (i.e. the integer image of
+   --  the value in units of delta). The call may destroy the value in Digs,
+   --  which is why Digs is in-out (this happens if rounding is required).
+   --  Set_Decimal_Digits is shared by all the decimal image routines.
+
+end System.Img_Dec;