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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- T T Y P E F --
-- --
-- S p e c --
-- --
-- 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 module contains values for the predefined floating-point attributes.
-- All references to these attribute values in a program being compiled must
-- use the values in this package, not the values returned by referencing
-- the corresponding attributes (since that would give host machine values).
-- Boolean-valued attributes are defined in System.Parameters, because they
-- need a finer control than what is provided by the formats described below.
-- The codes for the eight floating-point formats supported are:
-- IEEES - IEEE Single Float
-- IEEEL - IEEE Double Float
-- IEEEX - IEEE Double Extended Float
-- VAXFF - VAX F Float
-- VAXDF - VAX D Float
-- VAXGF - VAX G Float
-- AAMPS - AAMP 32-bit Float
-- AAMPL - AAMP 48-bit Float
package Ttypef is
----------------------------------
-- Universal Integer Attributes --
----------------------------------
-- Note that the constant declarations below specify values
-- using the Ada model, so IEEES_Machine_Emax does not specify
-- the IEEE definition of the single precision float type,
-- but the value of the Ada attribute which is one higher
-- as the binary point is at a different location.
IEEES_Digits : constant := 6;
IEEEL_Digits : constant := 15;
IEEEX_Digits : constant := 18;
VAXFF_Digits : constant := 6;
VAXDF_Digits : constant := 9;
VAXGF_Digits : constant := 15;
AAMPS_Digits : constant := 6;
AAMPL_Digits : constant := 9;
IEEES_Machine_Emax : constant := 128;
IEEEL_Machine_Emax : constant := 1024;
IEEEX_Machine_Emax : constant := 16384;
VAXFF_Machine_Emax : constant := 127;
VAXDF_Machine_Emax : constant := 127;
VAXGF_Machine_Emax : constant := 1023;
AAMPS_Machine_Emax : constant := 127;
AAMPL_Machine_Emax : constant := 127;
IEEES_Machine_Emin : constant := -125;
IEEEL_Machine_Emin : constant := -1021;
IEEEX_Machine_Emin : constant := -16381;
VAXFF_Machine_Emin : constant := -127;
VAXDF_Machine_Emin : constant := -127;
VAXGF_Machine_Emin : constant := -1023;
AAMPS_Machine_Emin : constant := -127;
AAMPL_Machine_Emin : constant := -127;
IEEES_Machine_Mantissa : constant := 24;
IEEEL_Machine_Mantissa : constant := 53;
IEEEX_Machine_Mantissa : constant := 64;
VAXFF_Machine_Mantissa : constant := 24;
VAXDF_Machine_Mantissa : constant := 56;
VAXGF_Machine_Mantissa : constant := 53;
AAMPS_Machine_Mantissa : constant := 24;
AAMPL_Machine_Mantissa : constant := 40;
IEEES_Model_Emin : constant := -125;
IEEEL_Model_Emin : constant := -1021;
IEEEX_Model_Emin : constant := -16381;
VAXFF_Model_Emin : constant := -127;
VAXDF_Model_Emin : constant := -127;
VAXGF_Model_Emin : constant := -1023;
AAMPS_Model_Emin : constant := -127;
AAMPL_Model_Emin : constant := -127;
IEEES_Model_Mantissa : constant := 24;
IEEEL_Model_Mantissa : constant := 53;
IEEEX_Model_Mantissa : constant := 64;
VAXFF_Model_Mantissa : constant := 24;
VAXDF_Model_Mantissa : constant := 56;
VAXGF_Model_Mantissa : constant := 53;
AAMPS_Model_Mantissa : constant := 24;
AAMPL_Model_Mantissa : constant := 40;
IEEES_Safe_Emax : constant := 128;
IEEEL_Safe_Emax : constant := 1024;
IEEEX_Safe_Emax : constant := 16384;
VAXFF_Safe_Emax : constant := 127;
VAXDF_Safe_Emax : constant := 127;
VAXGF_Safe_Emax : constant := 1023;
AAMPS_Safe_Emax : constant := 127;
AAMPL_Safe_Emax : constant := 127;
-------------------------------
-- Universal Real Attributes --
-------------------------------
IEEES_Model_Epsilon : constant := 2#1.0#E-23;
IEEEL_Model_Epsilon : constant := 2#1.0#E-52;
IEEEX_Model_Epsilon : constant := 2#1.0#E-63;
VAXFF_Model_Epsilon : constant := 16#0.1000_000#E-4;
VAXDF_Model_Epsilon : constant := 16#0.4000_0000_0000_000#E-7;
VAXGF_Model_Epsilon : constant := 16#0.4000_0000_0000_00#E-12;
AAMPS_Model_Epsilon : constant := 2#1.0#E-23;
AAMPL_Model_Epsilon : constant := 2#1.0#E-39;
IEEES_Model_Small : constant := 2#1.0#E-126;
IEEEL_Model_Small : constant := 2#1.0#E-1022;
IEEEX_Model_Small : constant := 2#1.0#E-16381;
VAXFF_Model_Small : constant := 16#0.8000_000#E-21;
VAXDF_Model_Small : constant := 16#0.8000_0000_0000_000#E-31;
VAXGF_Model_Small : constant := 16#0.8000_0000_0000_00#E-51;
AAMPS_Model_Small : constant := 16#0.8000_000#E-21;
AAMPL_Model_Small : constant := 16#0.8000_0000_000#E-31;
IEEES_Safe_First : constant := -16#0.FFFF_FF#E+32;
IEEEL_Safe_First : constant := -16#0.FFFF_FFFF_FFFF_F8#E+256;
IEEEX_Safe_First : constant := -16#0.FFFF_FFFF_FFFF_FFFF#E+4096;
VAXFF_Safe_First : constant := -16#0.7FFF_FF8#E+32;
VAXDF_Safe_First : constant := -16#0.7FFF_FFFF_FFFF_FF8#E-38;
VAXGF_Safe_First : constant := -16#0.7FFF_FFFF_FFFF_FC#E-256;
AAMPS_Safe_First : constant := -16#0.7FFF_FF8#E+32;
AAMPL_Safe_First : constant := -16#0.7FFF_FFFF_FF8#E+32;
IEEES_Safe_Large : constant := 16#0.FFFF_FF#E+32;
IEEEL_Safe_Large : constant := 16#0.FFFF_FFFF_FFFF_F8#E+256;
IEEEX_Safe_Large : constant := 16#0.FFFF_FFFF_FFFF_FFFF#E+4096;
VAXFF_Safe_Large : constant := 16#0.7FFF_FC0#E+32;
VAXDF_Safe_Large : constant := 16#0.7FFF_FFFF_0000_000#E+32;
VAXGF_Safe_Large : constant := 16#0.7FFF_FFFF_FFFF_F0#E+256;
AAMPS_Safe_Large : constant := 16#0.7FFF_FC0#E+32;
AAMPL_Safe_Large : constant := 16#0.7FFF_FFFF#E+32;
IEEES_Safe_Last : constant := 16#0.FFFF_FF#E+32;
IEEEL_Safe_Last : constant := 16#0.FFFF_FFFF_FFFF_F8#E+256;
IEEEX_Safe_Last : constant := 16#0.FFFF_FFFF_FFFF_FFFF#E+4096;
VAXFF_Safe_Last : constant := 16#0.7FFF_FF8#E+32;
VAXDF_Safe_Last : constant := 16#0.7FFF_FFFF_FFFF_FC0#E+32;
VAXGF_Safe_Last : constant := 16#0.7FFF_FFFF_FFFF_FC#E+256;
AAMPS_Safe_Last : constant := 16#0.7FFF_FF8#E+32;
AAMPL_Safe_Last : constant := 16#0.7FFF_FFFF_FF8#E+32;
IEEES_Safe_Small : constant := 2#1.0#E-126;
IEEEL_Safe_Small : constant := 2#1.0#E-1022;
IEEEX_Safe_Small : constant := 2#1.0#E-16381;
VAXFF_Safe_Small : constant := 16#0.1000_000#E-31;
VAXDF_Safe_Small : constant := 16#0.1000_0000_0000_000#E-31;
VAXGF_Safe_Small : constant := 16#0.1000_0000_0000_00#E-255;
AAMPS_Safe_Small : constant := 16#0.1000_000#E-31;
AAMPL_Safe_Small : constant := 16#0.1000_0000_000#E-31;
----------------------
-- Typed Attributes --
----------------------
-- The attributes First and Last are typed attributes in Ada, and yield
-- values of the appropriate float type. However we still describe them
-- as universal real values in this file, since we are talking about the
-- target floating-point types, not the host floating-point types.
IEEES_First : constant := -16#0.FFFF_FF#E+32;
IEEEL_First : constant := -16#0.FFFF_FFFF_FFFF_F8#E+256;
IEEEX_First : constant := -16#0.FFFF_FFFF_FFFF_FFFF#E+4096;
VAXFF_First : constant := -16#0.7FFF_FF8#E+32;
VAXDF_First : constant := -16#0.7FFF_FFFF_FFFF_FF8#E+32;
VAXGF_First : constant := -16#0.7FFF_FFFF_FFFF_FC#E+256;
AAMPS_First : constant := -16#0.7FFF_FF8#E+32;
AAMPL_First : constant := -16#0.7FFF_FFFF_FF8#E+32;
IEEES_Last : constant := 16#0.FFFF_FF#E+32;
IEEEL_Last : constant := 16#0.FFFF_FFFF_FFFF_F8#E+256;
IEEEX_Last : constant := 16#0.FFFF_FFFF_FFFF_FFFF#E+4096;
VAXFF_Last : constant := 16#0.7FFF_FF8#E+32;
VAXDF_Last : constant := 16#0.7FFF_FFFF_FFFF_FC0#E+32;
VAXGF_Last : constant := 16#0.7FFF_FFFF_FFFF_FC#E+256;
AAMPS_Last : constant := 16#0.7FFF_FF8#E+32;
AAMPL_Last : constant := 16#0.7FFF_FFFF_FF8#E+32;
end Ttypef;
|
