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--                                                                          --

--                         GNAT RUN-TIME COMPONENTS                         --

--                                                                          --

--                      S Y S T E M . I M G _ R E A L                       --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          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 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.                                     --

--                                                                          --

-- 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.      --

--                                                                          --

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--  Image for fixed and float types (also used for Float_IO/Fixed_IO output)

package System.Img_Real is

   pragma Pure;

   procedure Image_Ordinary_Fixed_Point

     (V   : Long_Long_Float;

      S   : in out String;

      P   : out Natural;

      Aft : Natural);

   --  Computes fixed_type'Image (V) and returns the result in S (1 .. P)

   --  updating P on return. The result is computed according to the rules for

   --  image for fixed-point types (RM 3.5(34)), where Aft is the value of the

   --  Aft attribute for the fixed-point type. This function is used only for

   --  ordinary fixed point (see package System.Img_Dec for handling of decimal

   --  fixed-point). The caller guarantees that S is long enough to hold the

   --  result and has a lower bound of 1.

   procedure Image_Floating_Point

     (V    : Long_Long_Float;

      S    : in out String;

      P    : out Natural;

      Digs : Natural);

   --  Computes fixed_type'Image (V) and returns the result in S (1 .. P)

   --  updating P on return. The result is computed according to the rules for

   --  image for floating-point types (RM 3.5(33)), where Digs is the value of

   --  the Digits attribute for the floating-point type. The caller guarantees

   --  that S is long enough to hold the result and has a lower bound of 1.

   procedure Set_Image_Real

     (V    : Long_Long_Float;

      S    : out String;

      P    : in out Natural;

      Fore : Natural;

      Aft  : Natural;

      Exp  : Natural);

   --  Sets the image of V 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 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 from Text_IO. Note

   --  that no space is stored at the start for non-negative values.

end System.Img_Real;