| 1 | /* Prototype declarations for math classification macros helpers. |
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| 2 | Copyright (C) 2017-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | /* Classify given number. */ |
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| 20 | __MATHDECL_ALIAS (int, __fpclassify,, (_Mdouble_ __value), fpclassify) |
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| 21 | __attribute__ ((__const__)); |
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| 22 | |
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| 23 | /* Test for negative number. */ |
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| 24 | __MATHDECL_ALIAS (int, __signbit,, (_Mdouble_ __value), signbit) |
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| 25 | __attribute__ ((__const__)); |
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| 26 | |
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| 27 | /* Return 0 if VALUE is finite or NaN, +1 if it |
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| 28 | is +Infinity, -1 if it is -Infinity. */ |
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| 29 | __MATHDECL_ALIAS (int, __isinf,, (_Mdouble_ __value), isinf) |
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| 30 | __attribute__ ((__const__)); |
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| 31 | |
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| 32 | /* Return nonzero if VALUE is finite and not NaN. Used by isfinite macro. */ |
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| 33 | __MATHDECL_ALIAS (int, __finite,, (_Mdouble_ __value), finite) |
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| 34 | __attribute__ ((__const__)); |
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| 35 | |
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| 36 | /* Return nonzero if VALUE is not a number. */ |
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| 37 | __MATHDECL_ALIAS (int, __isnan,, (_Mdouble_ __value), isnan) |
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| 38 | __attribute__ ((__const__)); |
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| 39 | |
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| 40 | /* Test equality. */ |
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| 41 | __MATHDECL_ALIAS (int, __iseqsig,, (_Mdouble_ __x, _Mdouble_ __y), iseqsig); |
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| 42 | |
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| 43 | /* Test for signaling NaN. */ |
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| 44 | __MATHDECL_ALIAS (int, __issignaling,, (_Mdouble_ __value), issignaling) |
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| 45 | __attribute__ ((__const__)); |
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| 46 | |
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