1 /* Return classification value corresponding to argument.
2 Copyright (C) 1997, 2002 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
5 Fixed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, write to the Free
19 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 #include "math_private.h"
28 __fpclassifyl (long double x
)
30 u_int32_t ex
, hx
, lx
, m
;
31 int retval
= FP_NORMAL
;
33 GET_LDOUBLE_WORDS (ex
, hx
, lx
, x
);
34 m
= (hx
& 0x7fffffff) | lx
;
38 else if (ex
== 0 && (hx
& 0x80000000) == 0)
39 retval
= FP_SUBNORMAL
;
40 else if (ex
== 0x7fff)
41 retval
= m
!= 0 ? FP_NAN
: FP_INFINITE
;
45 libm_hidden_def (__fpclassifyl
)