glibc (2.38)
1 /* Prototype declarations for math classification macros helpers.
2 Copyright (C) 2017-2023 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__));
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