1/* Prototype declarations for math classification macros helpers. 
2 Copyright (C) 2017-2020 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 
20/* Classify given number. */ 
21__MATHDECL_1 (int, __fpclassify,, (_Mdouble_ __value)) 
22 __attribute__ ((__const__)); 
23 
24/* Test for negative number. */ 
25__MATHDECL_1 (int, __signbit,, (_Mdouble_ __value)) 
26 __attribute__ ((__const__)); 
27 
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__)); 
31 
32/* Return nonzero if VALUE is finite and not NaN. Used by isfinite macro. */ 
33__MATHDECL_1 (int, __finite,, (_Mdouble_ __value)) __attribute__ ((__const__)); 
34 
35/* Return nonzero if VALUE is not a number. */ 
36__MATHDECL_1 (int, __isnan,, (_Mdouble_ __value)) __attribute__ ((__const__)); 
37 
38/* Test equality. */ 
39__MATHDECL_1 (int, __iseqsig,, (_Mdouble_ __x, _Mdouble_ __y)); 
40 
41/* Test for signaling NaN. */ 
42__MATHDECL_1 (int, __issignaling,, (_Mdouble_ __value)) 
43 __attribute__ ((__const__)); 
44