New Language: Ada

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45954 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 91 insertions, 0 deletions

diff --git a/gcc/ada/eval_fat.ads b/gcc/ada/eval_fat.ads
new file mode 100644
index 00000000000..b3e398ab208
--- /dev/null
+++ b/gcc/ada/eval_fat.ads
@@ -0,0 +1,91 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             E V A L _ F A T                              --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                            $Revision: 1.4 $                              --
+--                                                                          --
+--          Copyright (C) 1992-2000 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 2,  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.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
+-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
+-- MA 02111-1307, USA.                                                      --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package provides for compile-time evaluation of static calls to the
+--  floating-point attribute functions. It is the compile-time equivalent of
+--  the System.Fat_Gen runtime package. The coding is quite similar, as are
+--  the subprogram specs, except that the type is passed as an explicit
+--  first parameter (and used via ttypes, to obtain the necessary information
+--  about the characteristics of the type for computing the results.
+
+with Types;  use Types;
+with Uintp;  use Uintp;
+with Urealp; use Urealp;
+
+package Eval_Fat is
+
+   subtype UI is Uint;
+   --  The compile time representation of universal integer
+
+   subtype T is Ureal;
+   --  The compile time representation of floating-point values
+
+   subtype R is Entity_Id;
+   --  The compile time representation of the floating-point root type
+
+   type Rounding_Mode is (Floor, Ceiling, Round, Round_Even);
+   --  Used to indicate rounding mode for Machine attribute
+
+   Rounding_Was_Biased : Boolean;
+   --  Set if last use of Machine rounded a halfway case away from zero
+
+   function Adjacent          (RT : R; X, Towards : T)              return T;
+
+   function Ceiling           (RT : R; X : T)                       return T;
+
+   function Compose           (RT : R; Fraction : T; Exponent : UI) return T;
+
+   function Copy_Sign         (RT : R; Value, Sign : T)             return T;
+
+   function Exponent          (RT : R; X : T)                       return UI;
+
+   function Floor             (RT : R; X : T)                       return T;
+
+   function Fraction          (RT : R; X : T)                       return T;
+
+   function Leading_Part      (RT : R; X : T; Radix_Digits : UI)    return T;
+
+   function Machine           (RT : R; X : T; Mode : Rounding_Mode) return T;
+
+   function Model             (RT : R; X : T)                       return T;
+
+   function Pred              (RT : R; X : T)                       return T;
+
+   function Remainder         (RT : R; X, Y : T)                    return T;
+
+   function Rounding          (RT : R; X : T)                       return T;
+
+   function Scaling           (RT : R; X : T; Adjustment : UI)      return T;
+
+   function Succ              (RT : R; X : T)                       return T;
+
+   function Truncation        (RT : R; X : T)                       return T;
+
+   function Unbiased_Rounding (RT : R; X : T)                       return T;
+
+end Eval_Fat;