]>
git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/ieee754/ldbl-128/s_fpclassifyl.c
1 /* Return classification value corresponding to argument.
2 Copyright (C) 1997-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997 and
5 Jakub Jelinek <jj@ultra.linux.cz>, 1999.
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, see
19 <https://www.gnu.org/licenses/>. */
23 #include <math_private.h>
27 __fpclassifyl (_Float128 x
)
30 int retval
= FP_NORMAL
;
32 GET_LDOUBLE_WORDS64 (hx
, lx
, x
);
33 lx
|= (hx
& 0x0000ffffffffffffLL
);
34 hx
&= 0x7fff000000000000LL
;
38 retval
= FP_SUBNORMAL
;
39 else if (hx
== 0x7fff000000000000LL
)
40 retval
= lx
!= 0 ? FP_NAN
: FP_INFINITE
;
44 libm_hidden_def (__fpclassifyl
)