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/* Return classification value corresponding to argument.
Copyright (C) 1997, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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. */
#include <math.h>
#include "math_private.h"
int
__fpclassifyl (long double x)
{
u_int32_t ex, hx, lx;
int retval = FP_NORMAL;
GET_LDOUBLE_WORDS (ex, hx, lx, x);
ex &= 0x7fff;
if ((ex | lx | hx) == 0)
retval = FP_ZERO;
else if (ex == 0 && (hx & 0x80000000) == 0)
retval = FP_SUBNORMAL;
else if (ex == 0x7fff)
retval = ((hx & 0x7fffffff) | lx) != 0 ? FP_NAN : FP_INFINITE;
return retval;
}
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