--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/s-imgrea.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,76 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                      S Y S T E M . I M G _ R E A L                       --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2017, 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  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;