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(* Copyright (C) 2005, 2006 Free Software Foundation, Inc. *)
(* This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GNU Modula-2 is distributed in the hope that it will be useful, but WITHOUT 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 along
with gm2; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *)
MODULE realbitscast;
FROM SYSTEM IMPORT CAST, WORD ;
#undef HAVE_REAL96
#if defined(__sparc__)
# undef HAVE_REAL96
#elif defined(__alpha__) && defined(__arch64__)
# define HAVE_REAL96
#elif defined(__ppc__)
# undef HAVE_REAL96
#elif defined(__ia64)
# undef HAVE_REAL96
#elif defined(__APPLE__)
(* No 96 bit floating type on Apple platforms *)
# undef HAVE_REAL96
#endif
TYPE
BITS32 = SET OF [0..31];
BITS64 = SET OF [0..63];
BITS96 = SET OF [0..95] ;
REAL32 = SHORTREAL;
REAL64 = REAL;
#if defined(HAVE_REAL96)
REAL96 = LONGREAL ;
(* and on the x86_64 LONGREAL is 128 bits *)
(* this is also true for at least some alphas *)
#endif
VAR
b32 : BITS32;
b64 : BITS64;
r32 : REAL32;
r64 : REAL64;
#if defined(HAVE_REAL96)
b96 : BITS96 ;
r96 : REAL96 ;
#endif
w : WORD ;
BEGIN
r32 := 1.0 ;
b32 := CAST(BITS32, r32) ;
b64 := CAST(BITS64, r64) ;
#if defined(HAVE_REAL96)
b96 := CAST(BITS96, r96)
#endif
END realbitscast.
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