+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- E V A L _ F A T --
--- --
--- S p e c --
--- --
--- $Revision: 1.2.10.1 $
--- --
--- Copyright (C) 1992-2001 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. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
--- 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);
- for Rounding_Mode use (0, 1, 2, 3);
- -- Used to indicate rounding mode for Machine attribute
- -- Note that C code in gigi knows that Round_Even is 3
-
- 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;
projects / msp430-gcc.git / blobdiff