1/* Prototype declarations for math classification macros helpers.
 2   Copyright (C) 2017-2025 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__));