1 /* Return classification value corresponding to argument.  m68k version.
2    Copyright (C) 1997-2022 Free Software Foundation, Inc.
3    This file is part of the GNU C Library.
4 
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9 
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14 
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library.  If not, see
17    <https://www.gnu.org/licenses/>.  */
18 
19 #include <math.h>
20 
21 #include <math_private.h>
22 
23 
24 int
__fpclassifyl(long double x)25 __fpclassifyl (long double x)
26 {
27   uint32_t ex, hx, lx;
28   int retval = FP_NORMAL;
29 
30   GET_LDOUBLE_WORDS (ex, hx, lx, x);
31   ex &= 0x7fff;
32   if ((ex | hx | lx) == 0)
33     retval = FP_ZERO;
34   else if (ex == 0 && (hx & 0x80000000) == 0)
35     retval = FP_SUBNORMAL;
36   else if (ex == 0x7fff)
37     retval = ((hx & 0x7fffffff) | lx) != 0 ? FP_NAN : FP_INFINITE;
38 
39   return retval;
40 }
41 libm_hidden_def (__fpclassifyl)
42