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+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME COMPONENTS --
+-- --
+-- S Y S T E M . I M G _ U T I L --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 2020, 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. --
+-- --
+------------------------------------------------------------------------------
+
+-- This package provides some common utilities used by the s-imgxxx files
+
+package System.Img_Util is
+ pragma Pure;
+
+ 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);
+ -- Sets the image of Digs (1 .. NDigs), which is 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 of a decimal fixed point 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 the
+ -- 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. Note that there is no
+ -- leading space stored. The call may destroy the value in Digs, which is
+ -- why Digs is in-out (this happens if rounding is required).
+
+end System.Img_Util;