gcc/ada/libgnat/s-bignum.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                       S Y S T E M . B I G N U M S                        --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2012-2020, 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 with System.Generic_Bignums;
  33 with Ada.Unchecked_Conversion;
  34
  35 package body System.Bignums is
  36
  37    package Sec_Stack_Bignums is new
  38      System.Generic_Bignums (Use_Secondary_Stack => True);
  39    use Sec_Stack_Bignums;
  40
  41    function "+" is new Ada.Unchecked_Conversion
  42      (Bignum, Sec_Stack_Bignums.Bignum);
  43
  44    function "-" is new Ada.Unchecked_Conversion
  45      (Sec_Stack_Bignums.Bignum, Bignum);
  46
  47    function Big_Add (X, Y : Bignum) return Bignum is
  48      (-Sec_Stack_Bignums.Big_Add (+X, +Y));
  49
  50    function Big_Sub (X, Y : Bignum) return Bignum is
  51      (-Sec_Stack_Bignums.Big_Sub (+X, +Y));
  52
  53    function Big_Mul (X, Y : Bignum) return Bignum is
  54      (-Sec_Stack_Bignums.Big_Mul (+X, +Y));
  55
  56    function Big_Div (X, Y : Bignum) return Bignum is
  57      (-Sec_Stack_Bignums.Big_Div (+X, +Y));
  58
  59    function Big_Exp (X, Y : Bignum) return Bignum is
  60      (-Sec_Stack_Bignums.Big_Exp (+X, +Y));
  61
  62    function Big_Mod (X, Y : Bignum) return Bignum is
  63      (-Sec_Stack_Bignums.Big_Mod (+X, +Y));
  64
  65    function Big_Rem (X, Y : Bignum) return Bignum is
  66      (-Sec_Stack_Bignums.Big_Rem (+X, +Y));
  67
  68    function Big_Neg (X    : Bignum) return Bignum is
  69      (-Sec_Stack_Bignums.Big_Neg (+X));
  70
  71    function Big_Abs (X    : Bignum) return Bignum is
  72      (-Sec_Stack_Bignums.Big_Abs (+X));
  73
  74    function Big_EQ  (X, Y : Bignum) return Boolean is
  75      (Sec_Stack_Bignums.Big_EQ (+X, +Y));
  76    function Big_NE  (X, Y : Bignum) return Boolean is
  77      (Sec_Stack_Bignums.Big_NE (+X, +Y));
  78    function Big_GE  (X, Y : Bignum) return Boolean is
  79      (Sec_Stack_Bignums.Big_GE (+X, +Y));
  80    function Big_LE  (X, Y : Bignum) return Boolean is
  81      (Sec_Stack_Bignums.Big_LE (+X, +Y));
  82    function Big_GT  (X, Y : Bignum) return Boolean is
  83      (Sec_Stack_Bignums.Big_GT (+X, +Y));
  84    function Big_LT  (X, Y : Bignum) return Boolean is
  85      (Sec_Stack_Bignums.Big_LT (+X, +Y));
  86
  87    function Bignum_In_LLI_Range (X : Bignum) return Boolean is
  88      (Sec_Stack_Bignums.Bignum_In_LLI_Range (+X));
  89
  90    function To_Bignum (X : Long_Long_Integer) return Bignum is
  91      (-Sec_Stack_Bignums.To_Bignum (X));
  92
  93    function From_Bignum (X : Bignum) return Long_Long_Integer is
  94      (Sec_Stack_Bignums.From_Bignum (+X));
  95
  96 end System.Bignums;