60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
|
/* `NAN' constants for m68k.
|
||
|
|
Copyright (C) 1997 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
|
||
|
|
The GNU C Library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Library General Public License as
|
||
|
|
published by the Free Software Foundation; either version 2 of the
|
||
|
|
License, or (at your option) any later version.
|
||
|
|
|
||
|
|
The GNU C Library 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
|
||
|
|
Library General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Library General Public
|
||
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
||
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||
|
|
Boston, MA 02111-1307, USA. */
|
||
|
|
|
||
|
|
#ifndef _NAN_H
|
||
|
|
|
||
|
|
#define _NAN_H 1
|
||
|
|
|
||
|
|
/* IEEE Not A Number. */
|
||
|
|
|
||
|
|
#ifdef __GNUC__
|
||
|
|
|
||
|
|
#define NAN \
|
||
|
|
(__extension__ \
|
||
|
|
((union { unsigned long long __l; double __d; }) \
|
||
|
|
{ __l: 0x7fffffffffffffffULL }).__d)
|
||
|
|
|
||
|
|
#define NANF \
|
||
|
|
(__extension__ \
|
||
|
|
((union { unsigned long __l; float __f; }) \
|
||
|
|
{ __l: 0x7fffffffUL }).__f)
|
||
|
|
|
||
|
|
#define NANL \
|
||
|
|
(__extension__ \
|
||
|
|
((union { unsigned long __l[3]; long double __ld; }) \
|
||
|
|
{ __l: { 0x7fff0000UL, 0xffffffffUL, 0xffffffffUL } }).__ld)
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
static union { unsigned char __c[8]; double __d; } __nan =
|
||
|
|
{ { 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } };
|
||
|
|
#define NAN (__nan.__d)
|
||
|
|
|
||
|
|
static union { unsigned char __c[4]; float __f; } __nanf =
|
||
|
|
{ { 0x7f, 0xff, 0xff, 0xff } };
|
||
|
|
#define NANF (__nanf.__f)
|
||
|
|
|
||
|
|
static union { unsigned char __c[12]; long double __ld; } __nanl =
|
||
|
|
{ { 0x7f, 0xff, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } };
|
||
|
|
#define NANL (__nanl.__ld)
|
||
|
|
|
||
|
|
#endif /* GCC. */
|
||
|
|
|
||
|
|
#endif /* nan.h */
|