1 /* Prototype declarations for math classification macros helpers.
2 Copyright (C) 2017-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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 <http://www.gnu.org/licenses/>. */
20 /* Classify given number. */
21 __MATHDECL_1 (int, __fpclassify
,, (_Mdouble_ __value
))
22 __attribute__ ((__const__
));
24 /* Test for negative number. */
25 __MATHDECL_1 (int, __signbit
,, (_Mdouble_ __value
))
26 __attribute__ ((__const__
));
28 /* Return 0 if VALUE is finite or NaN, +1 if it
29 is +Infinity, -1 if it is -Infinity. */
30 __MATHDECL_1 (int, __isinf
,, (_Mdouble_ __value
)) __attribute__ ((__const__
));
32 /* Return nonzero if VALUE is finite and not NaN. Used by isfinite macro. */
33 __MATHDECL_1 (int, __finite
,, (_Mdouble_ __value
)) __attribute__ ((__const__
));
35 /* Return nonzero if VALUE is not a number. */
36 __MATHDECL_1 (int, __isnan
,, (_Mdouble_ __value
)) __attribute__ ((__const__
));
39 __MATHDECL_1 (int, __iseqsig
,, (_Mdouble_ __x
, _Mdouble_ __y
));
41 /* Test for signaling NaN. */
42 __MATHDECL_1 (int, __issignaling
,, (_Mdouble_ __value
))
43 __attribute__ ((__const__
));