gcc/ada/libgnat/s-imgbiu.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                       S Y S T E M . I M G _ B I U                        --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2020, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 --  Contains the routine for computing the image in based format of signed and
  33 --  unsigned integers whose size <= Integer'Size for use by Text_IO.Integer_IO
  34 --  and Text_IO.Modular_IO.
  35
  36 with System.Unsigned_Types;
  37
  38 package System.Img_BIU is
  39    pragma Pure;
  40
  41    procedure Set_Image_Based_Integer
  42      (V : Integer;
  43       B : Natural;
  44       W : Integer;
  45       S : out String;
  46       P : in out Natural);
  47    --  Sets the signed image of V in based format, using base value B (2..16)
  48    --  starting at S (P + 1), updating P to point to the last character stored.
  49    --  The image includes a leading minus sign if necessary, but no leading
  50    --  spaces unless W is positive, in which case leading spaces are output if
  51    --  necessary to ensure that the output string is no less than W characters
  52    --  long. The caller promises that the buffer is large enough and no check
  53    --  is made for this. Constraint_Error will not necessarily be raised if
  54    --  this is violated, since it is perfectly valid to compile this unit with
  55    --  checks off.
  56
  57    procedure Set_Image_Based_Unsigned
  58      (V : System.Unsigned_Types.Unsigned;
  59       B : Natural;
  60       W : Integer;
  61       S : out String;
  62       P : in out Natural);
  63    --  Sets the unsigned image of V in based format, using base value B (2..16)
  64    --  starting at S (P + 1), updating P to point to the last character stored.
  65    --  The image includes no leading spaces unless W is positive, in which case
  66    --  leading spaces are output if necessary to ensure that the output string
  67    --  is no less than W characters long. The caller promises that the buffer
  68    --  is large enough and no check is made for this. Constraint_Error will not
  69    --  necessarily be raised if this is violated, since it is perfectly valid
  70    --  to compile this unit with checks off).
  71
  72 end System.Img_BIU;