| (* 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. |
