------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUN-TIME COMPONENTS                         --
--                                                                          --
--                      S Y S T E M . I M G _ R E A L                       --
--                                                                          --
--                                 S p e c                                  --
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--          Copyright (C) 1992-2019, Free Software Foundation, Inc.         --
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-- 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- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- You should have received a copy of the GNU General Public License and    --
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-- <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.      --
--                                                                          --
------------------------------------------------------------------------------

--  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;
