1/* Prototype declarations for math classification macros helpers. 
2 Copyright (C) 2017-2022 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/* Classify given number. */ 
20__MATHDECL_ALIAS (int, __fpclassify,, (_Mdouble_ __value), fpclassify) 
21 __attribute__ ((__const__)); 
22 
23/* Test for negative number. */ 
24__MATHDECL_ALIAS (int, __signbit,, (_Mdouble_ __value), signbit) 
25 __attribute__ ((__const__)); 
26 
27/* Return 0 if VALUE is finite or NaN, +1 if it 
28 is +Infinity, -1 if it is -Infinity. */ 
29__MATHDECL_ALIAS (int, __isinf,, (_Mdouble_ __value), isinf) 
30 __attribute__ ((__const__)); 
31 
32/* Return nonzero if VALUE is finite and not NaN. Used by isfinite macro. */ 
33__MATHDECL_ALIAS (int, __finite,, (_Mdouble_ __value), finite) 
34 __attribute__ ((__const__)); 
35 
36/* Return nonzero if VALUE is not a number. */ 
37__MATHDECL_ALIAS (int, __isnan,, (_Mdouble_ __value), isnan) 
38 __attribute__ ((__const__)); 
39 
40/* Test equality. */ 
41__MATHDECL_ALIAS (int, __iseqsig,, (_Mdouble_ __x, _Mdouble_ __y), iseqsig); 
42 
43/* Test for signaling NaN. */ 
44__MATHDECL_ALIAS (int, __issignaling,, (_Mdouble_ __value), issignaling) 
45 __attribute__ ((__const__)); 
46