206 lines
10 KiB
Ada
206 lines
10 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- T T Y P E F --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
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-- MA 02111-1307, USA. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This module contains values for the predefined floating-point attributes.
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-- All references to these attribute values in a program being compiled must
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-- use the values in this package, not the values returned by referencing
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-- the corresponding attributes (since that would give host machine values).
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-- Boolean-valued attributes are defined in System.Parameters, because they
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-- need a finer control than what is provided by the formats described below.
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-- The codes for the eight floating-point formats supported are:
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-- IEEES - IEEE Single Float
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-- IEEEL - IEEE Double Float
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-- IEEEX - IEEE Double Extended Float
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-- VAXFF - VAX F Float
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-- VAXDF - VAX D Float
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-- VAXGF - VAX G Float
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-- AAMPS - AAMP 32-bit Float
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-- AAMPL - AAMP 48-bit Float
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package Ttypef is
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----------------------------------
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-- Universal Integer Attributes --
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----------------------------------
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-- Note that the constant declarations below specify values
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-- using the Ada model, so IEEES_Machine_Emax does not specify
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-- the IEEE definition of the single precision float type,
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-- but the value of the Ada attribute which is one higher
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-- as the binary point is at a different location.
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IEEES_Digits : constant := 6;
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IEEEL_Digits : constant := 15;
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IEEEX_Digits : constant := 18;
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VAXFF_Digits : constant := 6;
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VAXDF_Digits : constant := 9;
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VAXGF_Digits : constant := 15;
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AAMPS_Digits : constant := 6;
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AAMPL_Digits : constant := 9;
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IEEES_Machine_Emax : constant := 128;
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IEEEL_Machine_Emax : constant := 1024;
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IEEEX_Machine_Emax : constant := 16384;
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VAXFF_Machine_Emax : constant := 127;
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VAXDF_Machine_Emax : constant := 127;
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VAXGF_Machine_Emax : constant := 1023;
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AAMPS_Machine_Emax : constant := 127;
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AAMPL_Machine_Emax : constant := 127;
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IEEES_Machine_Emin : constant := -125;
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IEEEL_Machine_Emin : constant := -1021;
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IEEEX_Machine_Emin : constant := -16381;
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VAXFF_Machine_Emin : constant := -127;
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VAXDF_Machine_Emin : constant := -127;
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VAXGF_Machine_Emin : constant := -1023;
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AAMPS_Machine_Emin : constant := -127;
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AAMPL_Machine_Emin : constant := -127;
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IEEES_Machine_Mantissa : constant := 24;
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IEEEL_Machine_Mantissa : constant := 53;
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IEEEX_Machine_Mantissa : constant := 64;
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VAXFF_Machine_Mantissa : constant := 24;
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VAXDF_Machine_Mantissa : constant := 56;
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VAXGF_Machine_Mantissa : constant := 53;
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AAMPS_Machine_Mantissa : constant := 24;
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AAMPL_Machine_Mantissa : constant := 40;
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IEEES_Model_Emin : constant := -125;
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IEEEL_Model_Emin : constant := -1021;
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IEEEX_Model_Emin : constant := -16381;
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VAXFF_Model_Emin : constant := -127;
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VAXDF_Model_Emin : constant := -127;
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VAXGF_Model_Emin : constant := -1023;
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AAMPS_Model_Emin : constant := -127;
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AAMPL_Model_Emin : constant := -127;
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IEEES_Model_Mantissa : constant := 24;
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IEEEL_Model_Mantissa : constant := 53;
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IEEEX_Model_Mantissa : constant := 64;
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VAXFF_Model_Mantissa : constant := 24;
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VAXDF_Model_Mantissa : constant := 56;
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VAXGF_Model_Mantissa : constant := 53;
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AAMPS_Model_Mantissa : constant := 24;
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AAMPL_Model_Mantissa : constant := 40;
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IEEES_Safe_Emax : constant := 128;
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IEEEL_Safe_Emax : constant := 1024;
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IEEEX_Safe_Emax : constant := 16384;
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VAXFF_Safe_Emax : constant := 127;
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VAXDF_Safe_Emax : constant := 127;
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VAXGF_Safe_Emax : constant := 1023;
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AAMPS_Safe_Emax : constant := 127;
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AAMPL_Safe_Emax : constant := 127;
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-------------------------------
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-- Universal Real Attributes --
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-------------------------------
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IEEES_Model_Epsilon : constant := 2#1.0#E-23;
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IEEEL_Model_Epsilon : constant := 2#1.0#E-52;
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IEEEX_Model_Epsilon : constant := 2#1.0#E-63;
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VAXFF_Model_Epsilon : constant := 16#0.1000_000#E-4;
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VAXDF_Model_Epsilon : constant := 16#0.4000_0000_0000_000#E-7;
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VAXGF_Model_Epsilon : constant := 16#0.4000_0000_0000_00#E-12;
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AAMPS_Model_Epsilon : constant := 2#1.0#E-23;
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AAMPL_Model_Epsilon : constant := 2#1.0#E-39;
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IEEES_Model_Small : constant := 2#1.0#E-126;
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IEEEL_Model_Small : constant := 2#1.0#E-1022;
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IEEEX_Model_Small : constant := 2#1.0#E-16381;
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VAXFF_Model_Small : constant := 16#0.8000_000#E-21;
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VAXDF_Model_Small : constant := 16#0.8000_0000_0000_000#E-31;
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VAXGF_Model_Small : constant := 16#0.8000_0000_0000_00#E-51;
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AAMPS_Model_Small : constant := 16#0.8000_000#E-21;
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AAMPL_Model_Small : constant := 16#0.8000_0000_000#E-31;
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IEEES_Safe_First : constant := -16#0.FFFF_FF#E+32;
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IEEEL_Safe_First : constant := -16#0.FFFF_FFFF_FFFF_F8#E+256;
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IEEEX_Safe_First : constant := -16#0.FFFF_FFFF_FFFF_FFFF#E+4096;
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VAXFF_Safe_First : constant := -16#0.7FFF_FF8#E+32;
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VAXDF_Safe_First : constant := -16#0.7FFF_FFFF_FFFF_FF8#E-38;
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VAXGF_Safe_First : constant := -16#0.7FFF_FFFF_FFFF_FC#E-256;
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AAMPS_Safe_First : constant := -16#0.7FFF_FF8#E+32;
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AAMPL_Safe_First : constant := -16#0.7FFF_FFFF_FF8#E+32;
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IEEES_Safe_Large : constant := 16#0.FFFF_FF#E+32;
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IEEEL_Safe_Large : constant := 16#0.FFFF_FFFF_FFFF_F8#E+256;
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IEEEX_Safe_Large : constant := 16#0.FFFF_FFFF_FFFF_FFFF#E+4096;
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VAXFF_Safe_Large : constant := 16#0.7FFF_FC0#E+32;
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VAXDF_Safe_Large : constant := 16#0.7FFF_FFFF_0000_000#E+32;
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VAXGF_Safe_Large : constant := 16#0.7FFF_FFFF_FFFF_F0#E+256;
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AAMPS_Safe_Large : constant := 16#0.7FFF_FC0#E+32;
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AAMPL_Safe_Large : constant := 16#0.7FFF_FFFF#E+32;
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IEEES_Safe_Last : constant := 16#0.FFFF_FF#E+32;
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IEEEL_Safe_Last : constant := 16#0.FFFF_FFFF_FFFF_F8#E+256;
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IEEEX_Safe_Last : constant := 16#0.FFFF_FFFF_FFFF_FFFF#E+4096;
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VAXFF_Safe_Last : constant := 16#0.7FFF_FF8#E+32;
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VAXDF_Safe_Last : constant := 16#0.7FFF_FFFF_FFFF_FC0#E+32;
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VAXGF_Safe_Last : constant := 16#0.7FFF_FFFF_FFFF_FC#E+256;
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AAMPS_Safe_Last : constant := 16#0.7FFF_FF8#E+32;
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AAMPL_Safe_Last : constant := 16#0.7FFF_FFFF_FF8#E+32;
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IEEES_Safe_Small : constant := 2#1.0#E-126;
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IEEEL_Safe_Small : constant := 2#1.0#E-1022;
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IEEEX_Safe_Small : constant := 2#1.0#E-16381;
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VAXFF_Safe_Small : constant := 16#0.1000_000#E-31;
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VAXDF_Safe_Small : constant := 16#0.1000_0000_0000_000#E-31;
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VAXGF_Safe_Small : constant := 16#0.1000_0000_0000_00#E-255;
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AAMPS_Safe_Small : constant := 16#0.1000_000#E-31;
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AAMPL_Safe_Small : constant := 16#0.1000_0000_000#E-31;
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----------------------
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-- Typed Attributes --
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----------------------
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-- The attributes First and Last are typed attributes in Ada, and yield
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-- values of the appropriate float type. However we still describe them
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-- as universal real values in this file, since we are talking about the
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-- target floating-point types, not the host floating-point types.
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IEEES_First : constant := -16#0.FFFF_FF#E+32;
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IEEEL_First : constant := -16#0.FFFF_FFFF_FFFF_F8#E+256;
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IEEEX_First : constant := -16#0.FFFF_FFFF_FFFF_FFFF#E+4096;
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VAXFF_First : constant := -16#0.7FFF_FF8#E+32;
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VAXDF_First : constant := -16#0.7FFF_FFFF_FFFF_FF8#E+32;
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VAXGF_First : constant := -16#0.7FFF_FFFF_FFFF_FC#E+256;
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AAMPS_First : constant := -16#0.7FFF_FF8#E+32;
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AAMPL_First : constant := -16#0.7FFF_FFFF_FF8#E+32;
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IEEES_Last : constant := 16#0.FFFF_FF#E+32;
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IEEEL_Last : constant := 16#0.FFFF_FFFF_FFFF_F8#E+256;
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IEEEX_Last : constant := 16#0.FFFF_FFFF_FFFF_FFFF#E+4096;
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VAXFF_Last : constant := 16#0.7FFF_FF8#E+32;
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VAXDF_Last : constant := 16#0.7FFF_FFFF_FFFF_FC0#E+32;
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VAXGF_Last : constant := 16#0.7FFF_FFFF_FFFF_FC#E+256;
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AAMPS_Last : constant := 16#0.7FFF_FF8#E+32;
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AAMPL_Last : constant := 16#0.7FFF_FFFF_FF8#E+32;
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end Ttypef;
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