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Sat Feb 10 13:09:03 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>

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* sysdeps/m68k/fpu/isinfl.c, sysdeps/m68k/fpu/isnanl.c,
	sysdeps/m68k/isinfl.c, sysdeps/m68k/isnanl.c: New files.
This commit is contained in:
Roland McGrath 1996-02-13 09:51:13 +00:00
parent 5f51e1132a
commit 9168a08cef
4 changed files with 94 additions and 0 deletions
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4
sysdeps/m68k/fpu/isinfl.c Normal file
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#define FUNC __isinfl
#include <isinf.c>
weak_alias (__isinfl, isinfl)

4
sysdeps/m68k/fpu/isnanl.c Normal file
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#define FUNC __isnanl
#include <isinf.c>
weak_alias (__isnanl, isnanl)

45
sysdeps/m68k/isinfl.c Normal file
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/* Copyright (C) 1991, 1992, 1995 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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <math.h>
#include "ieee754.h"
#undef __isinfl
#undef isinfl
/* Return 0 if VALUE is finite or NaN, +1 if it
is +Infinity, -1 if it is -Infinity. */
int
__isinfl (long double value)
{
union ieee854_long_double u;
u.d = value;
/* An IEEE 854 infinity has an exponent with the
maximum possible value and a zero mantissa.
In Motorola's interpretation the integer bit is ignored. */
if ((u.ieee.exponent & 0x7fff) == 0x7fff &&
(u.ieee.mantissa0 & 0x7fffffff) == 0 && u.ieee.mantissa1 == 0)
return u.ieee.negative ? -1 : 1;
return 0;
}
weak_alias (__isinfl, isinfl);

41
sysdeps/m68k/isnanl.c Normal file
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/* Copyright (C) 1991, 1992, 1995 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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <math.h>
#include "ieee754.h"
#undef __isnanl
#undef isnanl
/* Return nonzero if VALUE is not a number. */
int
__isnanl (long double value)
{
union ieee854_long_double u;
u.d = value;
/* IEEE 854 NaN's have the maximum possible
exponent and a nonzero mantissa. In Motorola's
interpretation the integer bit is ignored. */
return ((u.ieee.exponent & 0x7fff) == 0x7fff &&
((u.ieee.mantissa0 & 0x7fffffff) != 0 || u.ieee.mantissa1 != 0));
}
weak_alias (__isnanl, isnanl);