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