blob: edf2ec37927ca4fd95cc9bbc5e84376283568835 [file] [log] [blame]
------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- S Y S T E M . I M A G E _ W --
-- --
-- S p e c --
-- --
-- Copyright (C) 1992-2021, 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. --
-- --
------------------------------------------------------------------------------
-- Contains the routine for computing the image of signed and unsigned
-- integers up to Integer for use by Text_IO.Integer_IO and
-- Text_IO.Modular_IO.
generic
type Int is range <>;
type Uns is mod <>;
package System.Image_W is
pragma Pure;
procedure Set_Image_Width_Integer
(V : Int;
W : Integer;
S : out String;
P : in out Natural);
-- Sets the signed image of V in decimal format, starting at S (P + 1),
-- updating P to point to the last character stored. The image includes
-- a leading minus sign if necessary, but no leading spaces unless W is
-- positive, in which case leading spaces are output if necessary to ensure
-- that the output string is no less than W characters long. 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.
procedure Set_Image_Width_Unsigned
(V : Uns;
W : Integer;
S : out String;
P : in out Natural);
-- Sets the unsigned image of V in decimal format, starting at S (P + 1),
-- updating P to point to the last character stored. The image includes no
-- leading spaces unless W is positive, in which case leading spaces are
-- output if necessary to ensure that the output string is no less than
-- W characters long. 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.
end System.Image_W;